{"gene":"DAXX","run_date":"2026-06-09T22:57:19","timeline":{"discoveries":[{"year":1997,"finding":"DAXX (Daxx) was identified as a novel protein that binds specifically to the Fas death domain via its C-terminal portion. A different region of Daxx activates both JNK and apoptosis. Overexpression of Daxx enhances Fas-mediated apoptosis and activates the JNK pathway. The Fas-binding domain of Daxx acts as a dominant-negative inhibitor of both Fas-induced apoptosis and JNK activation, and Daxx and FADD define two distinct apoptotic pathways downstream of Fas.","method":"Yeast two-hybrid, co-immunoprecipitation, overexpression with dominant-negative mutants, apoptosis assays","journal":"Cell","confidence":"High","confidence_rationale":"Tier 2 / Strong — reciprocal binding demonstrated, dominant-negative mapping, multiple functional readouts; foundational paper replicated across many subsequent studies","pmids":["9215629"],"is_preprint":false},{"year":1998,"finding":"Daxx activates the JNK kinase kinase ASK1 downstream of the Fas receptor. Upon Fas activation, Daxx interacts with ASK1 and relieves an inhibitory intramolecular interaction between the N- and C-termini of ASK1, thereby activating its kinase activity. Overexpression of a kinase-deficient ASK1 mutant inhibited Fas- and Daxx-induced apoptosis and JNK activation.","method":"Co-immunoprecipitation, kinase-deficient mutant rescue experiments, apoptosis assays","journal":"Science (New York, N.Y.)","confidence":"High","confidence_rationale":"Tier 2 / Strong — mechanistic epistasis with kinase-dead mutant, interaction mapping, replicated in subsequent studies","pmids":["9743501"],"is_preprint":false},{"year":1999,"finding":"Genetic knockout of Daxx in mice results in extensive apoptosis and embryonic lethality rather than the hyperproliferative phenotype expected from loss of a pro-apoptotic gene, establishing that Daxx is required to suppress apoptosis in the early embryo.","method":"Targeted gene deletion in mice, embryonic phenotypic analysis","journal":"Genes & development","confidence":"High","confidence_rationale":"Tier 2 / Strong — clean genetic KO with defined and unexpected phenotypic readout in vivo","pmids":["10444590"],"is_preprint":false},{"year":2000,"finding":"PML and Daxx physically interact within PML nuclear bodies (NBs). In the absence of PML, Daxx acquires a dispersed nuclear pattern and activation-induced cell death of splenocytes is profoundly impaired. PML inactivation completely abrogates Daxx's pro-apoptotic ability, placing PML upstream of Daxx in a nuclear body-dependent apoptotic pathway.","method":"Co-immunoprecipitation, immunofluorescence, PML-knockout cell/mouse models, apoptosis assays","journal":"The Journal of experimental medicine","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic epistasis (PML KO), co-IP, localization studies, multiple orthogonal methods","pmids":["10684855"],"is_preprint":false},{"year":2000,"finding":"Daxx interacts with the ETS1 transcription factor (via its C-terminal 173 amino acid region binding to the ETS1 N-terminal 139 amino acids) and represses ETS1-mediated transcriptional activation of target genes MMP1 and BCL2. Co-localization of EAP1/Daxx and ETS1 in the nucleus was confirmed in mammalian cells.","method":"Yeast two-hybrid, in vitro binding, co-localization, transcriptional reporter assays with deletion mutants","journal":"Oncogene","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — interaction domain mapping, co-localization, functional reporter assays; single lab","pmids":["10698492"],"is_preprint":false},{"year":2000,"finding":"Daxx interacts with Sentrin/SUMO and its conjugating enzyme Ubc9. The Fas-binding C-terminal region of Daxx (amino acids 625-740) maps as the sentrin and Ubc9 binding region, suggesting regulatory overlap between SUMO modification and Fas signaling at this domain.","method":"Yeast two-hybrid, GST pull-down, co-immunoprecipitation","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — multiple biochemical methods (yeast two-hybrid, GST pull-down, co-IP) but limited functional follow-up, single lab","pmids":["11112409"],"is_preprint":false},{"year":2000,"finding":"Phosphorylated dimers of HSP27 interact with Daxx, preventing Daxx's interaction with both ASK1 and Fas, and blocking Daxx-mediated apoptosis. HSP27 also blocks Fas-induced translocation of Daxx from the nucleus to the cytoplasm. A Daxx mutant lacking the HSP27 binding domain is not inhibited, and an HSP27 phosphorylation mutant (oligomer-only form) does not inhibit Daxx.","method":"Co-immunoprecipitation, immunofluorescence, apoptosis assays with phosphorylation and binding domain mutants","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 2 / Strong — domain mapping, phosphorylation mutants, multiple functional readouts, mechanistic interaction characterized with orthogonal approaches","pmids":["11003656"],"is_preprint":false},{"year":2001,"finding":"ASK1 controls the subcellular localization of Daxx: ASK1 sequesters Daxx in the cytoplasm, preventing its nuclear transcriptional repressor activity and enabling Daxx to bind activated Fas and mediate apoptosis. The relative concentration of ASK1 determines whether Daxx functions as a cytoplasmic pro-apoptotic mediator or a nuclear transcriptional repressor.","method":"Immunofluorescence, transcriptional reporter assay, co-expression studies","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — localization and functional assays, single lab, mechanistic claim relies on co-expression rather than endogenous contexts","pmids":["11495919"],"is_preprint":false},{"year":2003,"finding":"RNAi-mediated depletion of endogenous DAXX increases apoptosis (rescued by Bcl-2 overexpression) and causes transcriptional de-repression, including upregulation of NF-κB- and E2F1-regulated target genes, establishing that endogenous DAXX has anti-apoptotic and transcriptional repressor functions.","method":"RNAi knockdown, apoptosis assays, Bcl-2 rescue, transcriptional reporter/target gene analysis","journal":"Journal of cell science","confidence":"High","confidence_rationale":"Tier 2 / Moderate — clean endogenous KD with specific rescue (Bcl-2), transcriptional readouts, multiple targets characterized","pmids":["12482920"],"is_preprint":false},{"year":2003,"finding":"siRNA-mediated Daxx silencing sensitizes cells to Fas- and stress-induced apoptosis, with caspase activation, cytochrome c release, and JNK activation. Daxx silencing has no apparent cytotoxic effects alone; PML silencing has no effect on Daxx silencing-mediated apoptosis, suggesting Daxx inhibits Fas/stress apoptosis by suppressing proapoptotic gene expression outside PML domains.","method":"siRNA knockdown, apoptosis assays (caspase activation, cytochrome c release, JNK activation), PML co-silencing epistasis","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 2 / Strong — endogenous silencing, multiple orthogonal apoptosis readouts, epistasis with PML, consistent with parallel study (PMID 12482920)","pmids":["14517282"],"is_preprint":false},{"year":2003,"finding":"HIPK1 physically interacts with Daxx and relocalizes it from PML oncogenic domains (PODs) to chromatin, disrupting Daxx-PML interaction and augmenting Daxx interaction with HDAC1. HIPK1 also phosphorylates Daxx at Ser669; phosphorylation of this site diminishes Daxx transcriptional repression activity at specific promoters. Relocation from PODs is phosphorylation-independent but requires an active HIPK1 kinase domain.","method":"Co-immunoprecipitation, immunofluorescence, kinase assay, phospho-site mutagenesis, transcriptional reporter assays","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 1-2 / Moderate — kinase assay identifies phosphorylation site, mutagenesis validates function, co-IP and localization, multiple orthogonal methods, single lab","pmids":["12529400"],"is_preprint":false},{"year":2004,"finding":"Daxx interacts with DMAP1 (DNA methyltransferase 1-associated protein), and both form a complex with DNMT1 and co-localize in the nucleus. DMAP1 enhances Daxx-mediated repression of glucocorticoid receptor transcriptional activity, and Daxx protects DMAP1 from protein degradation in vivo.","method":"Yeast two-hybrid, co-immunoprecipitation, immunofluorescence, transcriptional reporter assays","journal":"Journal of immunology","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — interaction and co-localization shown, functional repression assay, single lab","pmids":["14978102"],"is_preprint":false},{"year":2005,"finding":"Wild-type DJ-1 sequesters Daxx in the nucleus, preventing Daxx from translocating to the cytoplasm, binding ASK1, and triggering the ASK1-dependent apoptotic pathway. The disease-causing L166P mutant of DJ-1 fails to sequester Daxx. DJ-1 was identified as a Daxx-interacting protein.","method":"Yeast two-hybrid screen, co-immunoprecipitation, immunofluorescence, apoptosis assays with DJ-1 mutants","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 / Moderate — interaction mapping, co-IP, localization experiments, functional assays with disease-causing mutant, multiple orthogonal methods","pmids":["15983381"],"is_preprint":false},{"year":2005,"finding":"Daxx mediates SUMO-dependent transcriptional repression of Smad4 via the C-terminal domain of Daxx. Daxx-Smad4 interaction requires sumoylation of Smad4 at Lys159 (but not Lys113). ChIP confirmed Daxx recruitment to an endogenous Smad4-targeted promoter in a Lys159-sumoylation-dependent manner. Daxx knockdown by RNAi enhanced TGF-β-induced transcription through a Smad4-dependent, but not K159R-Smad4-dependent, manner.","method":"Co-immunoprecipitation, in vitro binding, SUMO site mutagenesis, chromatin immunoprecipitation (ChIP), RNAi knockdown, transcriptional reporter assays","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 2 / Strong — ChIP, mutagenesis, RNAi rescue experiments, multiple orthogonal methods, mechanistic clarity","pmids":["15637079"],"is_preprint":false},{"year":2005,"finding":"Daxx interacts with avian sarcoma virus (ASV) integrase and viral DNA (via IN), and recruits histone deacetylases (HDACs) to viral DNA, repressing viral gene expression as an antiviral response. HDAC association with viral DNA is Daxx-dependent. Daxx is not required for early integration steps but restricts viral reporter gene expression.","method":"Yeast two-hybrid, co-immunoprecipitation, chromatin immunoprecipitation (ChIP), viral transduction assays in Daxx-null vs. Daxx-expressing cells","journal":"Journal of virology","confidence":"High","confidence_rationale":"Tier 2 / Moderate — co-IP interaction, ChIP for viral DNA, genetic comparison of Daxx-null vs. complemented cells, multiple readouts","pmids":["15795247"],"is_preprint":false},{"year":2005,"finding":"Daxx is required for stress-induced cell death and JNK activation in primary fibroblasts. RNAi depletion of Daxx in primary fibroblasts renders cells resistant to UV irradiation- and oxidative stress-induced cell death and impairs MKK/JNK activation, establishing a pro-apoptotic role in physiological settings.","method":"RNAi knockdown in primary fibroblasts, UV/H2O2 stress assays, JNK activation assays","journal":"Cell death and differentiation","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — clean endogenous KD in primary cells (more physiologically relevant), specific pathway readout, single lab","pmids":["15861194"],"is_preprint":false},{"year":2006,"finding":"Daxx is required for Mdm2 stability. Daxx simultaneously binds Mdm2 and the deubiquitinase Hausp/USP7, mediating the stabilizing effect of Hausp on Mdm2. Daxx also enhances the intrinsic E3 ubiquitin ligase activity of Mdm2 toward p53. Upon DNA damage, Daxx dissociates from Mdm2, correlating with Mdm2 self-degradation and p53 activation.","method":"Co-immunoprecipitation, siRNA knockdown, Mdm2 stability assays, ubiquitination assays, DNA damage experiments","journal":"Nature cell biology","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple co-IP interactions (Daxx-Mdm2-Hausp), functional ubiquitination assays, DNA damage dissociation, mechanistic circuit characterized","pmids":["16845383"],"is_preprint":false},{"year":2006,"finding":"Daxx represses antiapoptotic genes regulated by NF-κB by interacting with RelB. Daxx forms complexes with RelB while bound to target sites in the cIAP2 promoter (shown by EMSA and ChIP). daxx-/- cells show elevated murine c-IAP mRNA/protein levels, while relB-/- cells show reduced levels. Daxx-mediated sensitization to apoptosis is mechanistically linked to its transcriptional repression through RelB.","method":"Co-immunoprecipitation, EMSA, ChIP, daxx-/- and relB-/- mouse embryo cell lines, mRNA/protein level analysis","journal":"Cancer research","confidence":"High","confidence_rationale":"Tier 2 / Strong — ChIP, EMSA, genetic KO cells as epistasis, direct binding demonstrated, functional apoptosis linkage","pmids":["16982744"],"is_preprint":false},{"year":2006,"finding":"Daxx interacts with Tcf4 and reduces Tcf4 DNA binding activity and transcriptional activity in the nucleus. Daxx overexpression alters expression of Tcf4 downstream genes (cyclin D1, Hath-1) and induces G1 phase arrest in colon cancer cells.","method":"Yeast two-hybrid, co-immunoprecipitation, transcriptional reporter assays, cell cycle analysis","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — co-IP validated interaction, functional transcriptional and cell cycle assays; single lab","pmids":["16569639"],"is_preprint":false},{"year":2007,"finding":"Axin directly associates with Daxx at endogenous levels and tethers Daxx to p53. The Daxx/Axin complex formation is enhanced by UV irradiation. Axin cooperates with Daxx to stimulate HIPK2-mediated Ser46 phosphorylation of p53 and selectively activates p53 target PUMA. Daxx fails to inhibit colony formation in Axin-/- cells, and UV-induced cell death is attenuated by knockdown of Axin and Daxx.","method":"Co-immunoprecipitation (endogenous), UV irradiation assays, Axin-/- cell epistasis, siRNA knockdown, p53 phosphorylation assay, colony formation assay","journal":"Cancer research","confidence":"High","confidence_rationale":"Tier 2 / Strong — endogenous co-IP, genetic KO epistasis, kinase substrate assay, multiple functional readouts","pmids":["17210684"],"is_preprint":false},{"year":2007,"finding":"Daxx represses NF-κB transcriptional activity by interacting with p65 and inhibiting p300/CBP-mediated acetylation of p65. Co-immunoprecipitation revealed endogenous Daxx-p65 interaction stimulated by TNFα. ChIP and EMSA confirmed Daxx-mediated repression of NF-κB on target gene promoters.","method":"Co-immunoprecipitation, ChIP, EMSA, acetylation assays","journal":"Journal of molecular biology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — endogenous co-IP (TNFα-stimulated), ChIP, EMSA, acetylation assay; single lab, mechanistic explanation for repression","pmids":["17362989"],"is_preprint":false},{"year":2007,"finding":"Daxx is a transcriptional co-repressor of C/EBPβ. Daxx directly interacts with C/EBPβ via amino acids 190-400 of Daxx; co-expression of C/EBPβ relocates Daxx from PODs to the nucleoplasm. Daxx suppresses C/EBPβ basal and p300-enhanced transcriptional activity by decreasing p300-mediated C/EBPβ acetylation. PML co-expression abrogates the repressive Daxx-C/EBPβ interaction by re-recruiting Daxx to PODs.","method":"GST pull-down, co-immunoprecipitation, immunofluorescence, transcriptional reporter assays, acetylation assays","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — domain-mapped interaction, multiple functional assays, PML competition mechanism; single lab","pmids":["19690170"],"is_preprint":false},{"year":2007,"finding":"STRESS-DEPENDENT CHIP-Daxx interaction: CHIP (a ubiquitin E3 ligase/co-chaperone) interacts with Daxx in a stress-dependent manner, ubiquitinating Daxx at Lys630/631 (competing with sumoylation machinery), partitioning Daxx to an insoluble compartment, blocking HIPK2 association with Daxx, preventing p53 Ser46 phosphorylation, and suppressing the p53-dependent apoptotic program.","method":"Co-immunoprecipitation, in vitro ubiquitination assay, mutagenesis (Lys630/631), microarray, p53 phosphorylation assays, CHIP KO MEFs","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1-2 / Moderate — in vitro ubiquitination, mutagenesis identifying specific lysines, KO cells, microarray validation; multiple orthogonal methods","pmids":["19465479"],"is_preprint":false},{"year":2008,"finding":"Daxx controls epigenetic silencing of RelB target genes (dapk1, dapk3, c-flip, birc3) by recruiting DNA methyltransferase 1 (Dnmt1) to target gene promoters in a RelB-dependent manner, resulting in promoter DNA methylation. daxx-/- cells show decreased methylation of target promoters, and restoration of Daxx in daxx-/- cells restores DNA methylation.","method":"ChIP, daxx-/- and relB-/- cell lines, mRNA/protein level analysis, DNA methylation assays, stable transfection rescue","journal":"Genes & development","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic KO rescue, ChIP for Dnmt1 recruitment, DNA methylation quantification, multiple genetic controls","pmids":["18413714"],"is_preprint":false},{"year":2008,"finding":"Daxx contains two functional nuclear localization signals (NLS1: RLKRK at residues 227-231; NLS2: KKSRKEKK at residues 630-637) and interacts selectively with importin alpha3 through both NLS sequences. NLS2 plays the major role; disrupting both NLS1 and NLS2 is required to completely block nuclear localization and PML body association. Nuclear localization of Daxx is essential for its transcriptional effects on GR and p53.","method":"Site-directed mutagenesis, domain analysis, co-immunoprecipitation with importin alpha3, immunofluorescence, transcriptional reporter assays","journal":"Journal of cellular biochemistry","confidence":"High","confidence_rationale":"Tier 2 / Moderate — mutagenesis maps NLS residues, importin co-IP, functional transcriptional readout, multiple NLS mutants tested","pmids":["17661348"],"is_preprint":false},{"year":2006,"finding":"In response to DNA damage, Daxx localized in PML-NBs undergoes ubiquitination and degradation. RASSF1C, a newly identified Daxx binding partner, is constitutively anchored by Daxx in PML-NBs but is released and translocates to cytoplasmic microtubules when Daxx is degraded, where it participates in SAPK/JNK activation, coupling nuclear DNA damage to cytoplasmic SAPK/JNK signaling.","method":"Co-immunoprecipitation, immunofluorescence, ubiquitination assays, DNA damage (UV/chemicals), JNK activation assays","journal":"The EMBO journal","confidence":"High","confidence_rationale":"Tier 2 / Moderate — co-IP interaction, mechanistic pathway (ubiquitination → Daxx degradation → RASSF1C release → JNK), multiple readouts, single lab","pmids":["16810318"],"is_preprint":false},{"year":2009,"finding":"Daxx interacts with STAT3 and functions as a transcriptional co-repressor suppressing IL-6/STAT3-mediated transcription. Type I IFN-induced Daxx suppresses STAT3-mediated transcriptional activation; siRNA-mediated reduction of Daxx enhances IL-6/LIF-induced STAT3-dependent transcription. Daxx and STAT3 co-localize in the nucleus.","method":"Co-immunoprecipitation, siRNA knockdown, immunofluorescence, transcriptional reporter assays","journal":"Oncogene","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — co-IP interaction, siRNA functional assays, co-localization; single lab","pmids":["16331268"],"is_preprint":false},{"year":2009,"finding":"HCMV pp71 promotes SUMOylation of its cellular substrate Daxx. Daxx is a transcriptional co-repressor that silences viral immediate-early (IE) genes. At the start of lytic infections, pp71 travels to the nucleus, displaces ATRX from Daxx, and mediates Daxx degradation through a ubiquitin-independent, proteasome-dependent process.","method":"SUMOylation assays, co-immunoprecipitation, proteasome inhibitor experiments, viral IE gene expression assays","journal":"Journal of virology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — biochemical SUMOylation assay, mechanistic degradation pathway established, single lab","pmids":["19369322"],"is_preprint":false},{"year":2011,"finding":"DAXX's SUMO-interacting motif (SIM) at residues 732-740 is phosphorylated by CK2 kinase at Ser737 and Ser739. Phosphorylation promotes preferential DAXX-SIM binding to SUMO-1 over SUMO-2/3 (paralog-selective). NMR structural studies show the Daxx-SIM binds SUMO-1 in a parallel orientation. SIM phosphorylation causes Daxx preference for SUMO-1 conjugation/interaction and enhances Daxx-mediated antiapoptotic gene repression under stress.","method":"NMR spectroscopy (structural), CK2 kinase assay, phospho-site mutagenesis, SUMO binding assays, apoptosis reporter assays","journal":"Molecular cell","confidence":"High","confidence_rationale":"Tier 1 / Moderate — NMR structure of SIM:SUMO-1 complex, kinase identified (CK2), phospho-mutant functional assays, single lab but multiple rigorous orthogonal methods","pmids":["21474068"],"is_preprint":false},{"year":2011,"finding":"The N-terminal SIM (SIM-N) and C-terminal SIM (SIM-C) of DAXX have distinct SUMO-binding properties characterized by NMR: SIM-N binds SUMO-1 predominantly in a parallel orientation with ~4-fold lower KD than SIM-C; SIM-C interconverts between parallel and antiparallel binding modes. Within native context, SIM-N binds intramolecularly to the adjacent N-terminal helical bundle domain, reducing its apparent affinity for SUMO (putative autoregulatory mechanism). SIM-C interaction with sumoylated Ets1 is SUMO-mediated (no direct Daxx-Ets1 contact).","method":"NMR spectroscopy, binding affinity measurements, intramolecular binding assays","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1 / Moderate — high-resolution NMR characterization with quantitative binding data and mechanistic insight into autoregulation; single lab","pmids":["21383010"],"is_preprint":false},{"year":2011,"finding":"Daxx mediates activation-induced cell death (AICD) in microglia by triggering MST1 signaling. IFN-γ upregulates Daxx expression, which mediates MST1 homodimerization, activation, and nuclear translocation, leading to apoptosis. Depletion of Daxx or MST1 by RNAi attenuates IFN-γ-induced microglial cell death; MST1-null mice show significantly reduced IFN-γ-induced microglial death in vivo.","method":"RNAi knockdown, immunofluorescence, apoptosis assays, MST1-null mouse model","journal":"The EMBO journal","confidence":"High","confidence_rationale":"Tier 2 / Strong — RNAi in primary cells and in vivo mouse model, mechanistic pathway (Daxx→MST1 dimerization/activation), multiple orthogonal approaches","pmids":["21572393"],"is_preprint":false},{"year":2012,"finding":"Under heat shock, Daxx robustly and reversibly accumulates at centromeric/pericentromeric (CEN/periCEN) heterochromatin from its resting localization in PML NBs. Daxx depletion reduces CEN RNA accumulation under normal conditions and periCEN RNA after heat shock. Daxx depletion also decreases incorporation of the transcription-associated histone variant H3.3 into CEN and periCEN, and perturbs epigenetic modifications (elevating H3K4Me2 at periCEN under heat shock).","method":"Immunofluorescence (live-cell localization), FRAP, ChIP for H3.3 and histone modifications, RNA analysis after Daxx depletion, heat shock paradigm","journal":"Nucleus (Austin, Tex.)","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — localization experiments with functional consequences (H3.3 incorporation, heterochromatin transcription), single lab","pmids":["22572957"],"is_preprint":false},{"year":2012,"finding":"Daxx and ATRX are required to maintain a repressed chromatin environment at a CMV-promoter-regulated transgene array. In ICP0-expressing HeLa cells, ATRX and Daxx are depleted from the array concomitant with transcriptional activation. Histone H3.3 is recruited to but not incorporated into chromatin at the activated array, suggesting Daxx/ATRX are required for both transcriptional repression and H3.3 chromatin assembly at this locus. ATRX-negative U2OS cells show robust activation of the array.","method":"Single-cell live imaging with inducible transgene array, immunofluorescence, siRNA depletion, ATRX-negative cell line comparison","journal":"Journal of cell science","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — single-cell imaging with functional readouts, genetic comparison (ATRX-KO), ICP0 as experimental tool; single lab","pmids":["22976303"],"is_preprint":false},{"year":2013,"finding":"Upon DNA damage, Daxx is phosphorylated at Ser564 in an ATM-dependent manner. This phosphorylation disrupts the Daxx-Mdm2 interaction, facilitating Mdm2 self-degradation and p53 activation. Blocking Ser564 phosphorylation (non-phosphorylatable mutant) prevents Daxx-Mdm2 dissociation, stabilizes Mdm2, and inhibits DNA damage-induced p53 activation.","method":"Phospho-specific antibodies, ATM inhibitor/KO experiments, Ser564 mutagenesis, Daxx-Mdm2 co-IP after DNA damage, p53 activation assays","journal":"PloS one","confidence":"High","confidence_rationale":"Tier 2 / Moderate — ATM-dependence established pharmacologically and genetically, site-directed mutagenesis at Ser564, functional Mdm2/p53 consequences; single lab but multiple approaches; consistent with earlier work (PMID 16845383)","pmids":["23405218"],"is_preprint":false},{"year":2013,"finding":"USP7 interacts with Daxx and cooperates in regulating mitosis and taxane resistance. USP7 depletion impairs mitotic progression, stabilizes cyclin B, reduces CHFR E3 ubiquitin ligase stability, and consequently accumulates Aurora-A kinase (a CHFR substrate), leading to multipolar mitoses. These effects are independent of p53.","method":"Co-immunoprecipitation, siRNA depletion, cell cycle analysis, cyclin B/Aurora-A stability assays, colony formation assays","journal":"Cell death and differentiation","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP interaction, functional depletion with mechanistic pathway (USP7→CHFR stability→Aurora-A), p53-independence established; single lab","pmids":["23348568"],"is_preprint":false},{"year":2013,"finding":"Daxx and Rassf1 interact and co-localize during mitosis. Daxx depletion or expression of the Daxx-binding domain of Rassf1 elevates cyclin B stability and increases taxol resistance. Daxx and Rassf1 define a mitotic stress checkpoint enabling cells to exit mitosis as micronucleated cells when encountering mitotic stress (including taxol).","method":"Co-immunoprecipitation, immunofluorescence during mitosis, siRNA depletion, cyclin B stability assays, mouse xenograft models","journal":"Oncogene","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP, in vivo xenograft, mechanistic pathway; single lab","pmids":["21643015"],"is_preprint":false},{"year":2015,"finding":"Daxx depletion increases DNA methylation levels at the RASSF1A promoter are critically controlled by DAXX: DAXX overexpression leads to enhanced RASSF1A promoter methylation whereas DAXX inhibition reduces it. p53 recruits DAXX and DNMT1 to the RASSF1A promoter for methylation-mediated silencing. DAXX-mediated RASSF1A methylation also regulates MDM2 protein stability.","method":"ChIP, DNA methylation assays, siRNA knockdown, DAXX overexpression, MDM2 stability analysis","journal":"FASEB journal","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP, methylation quantitation, functional rescue experiments; single lab","pmids":["23038753"],"is_preprint":false},{"year":2015,"finding":"The DAXX/ATRX complex is enriched at tandem repetitive elements (retrotransposons and telomeres) in mouse ESCs; global DNA hypomethylation further promotes this recruitment. DAXX/ATRX knockdown in cells with hypomethylated genomes exacerbates aberrant transcriptional de-repression of repeat elements and telomere dysfunction. Mechanistically, DAXX/ATRX-mediated repression involves SUV39H recruitment and H3K9 trimethylation.","method":"Genome-wide binding (ChIP-seq), transcriptome analysis (RNA-seq), siRNA knockdown, DNA hypomethylation treatment, H3K9me3 ChIP","journal":"Cell stem cell","confidence":"High","confidence_rationale":"Tier 2 / Strong — genome-wide ChIP-seq and RNA-seq, genetic KD with functional readouts, mechanistic H3K9me3 ChIP, multiple orthogonal approaches","pmids":["26340527"],"is_preprint":false},{"year":2015,"finding":"ATM kinase and Wip1 phosphatase are opposing regulators of DAXX phosphorylation at Ser564. ATM-dependent DAXX phosphorylation at S564 (identified by mutagenesis) occurs rapidly during DNA damage response and phosphorylated DAXX localizes to PML nuclear bodies. Wip1 (a p53-regulated phosphatase) dephosphorylates DAXX at S564 both in vitro and in cells. However, DAXX knock-down or TALEN-mediated DAXX deletion did not affect p53-mediated gene expression upon DNA damage.","method":"ATM inhibitor, site-directed mutagenesis (S564), in vitro phosphatase assay, immunofluorescence, TALEN-mediated DAXX deletion, RNA-seq/microarray for p53 targets","journal":"Cell cycle (Georgetown, Tex.)","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — in vitro phosphatase assay, mutagenesis, genetic deletion (TALEN), functional transcriptional readout (negative for p53 pathway); single lab","pmids":["25659035"],"is_preprint":false},{"year":2016,"finding":"Daxx directly binds to the DNA-binding domain of the transcription factor Slug, impeding HDAC1 recruitment and antagonizing Slug E-box binding. This suppresses Slug-mediated EMT and cell invasiveness. Under hypoxia, HIF-1α downregulates Daxx expression, promoting cancer invasion via the HIF-1α/HDAC1/Slug axis.","method":"Co-immunoprecipitation, ChIP, siRNA knockdown, EMT/invasion assays, orthotopic mouse model, re-expression rescue experiments","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Strong — co-IP, ChIP, mechanistic rescue in vivo, multiple functional readouts, clear epistatic pathway","pmids":["28004751"],"is_preprint":false},{"year":2017,"finding":"X-ray crystal structure of the ATRX-DAXX interaction surface was determined at high resolution. Single amino acid substitutions in DAXX that abrogate ATRX complex formation revealed two biochemically distinct DAXX complexes: (1) the ATRX-DAXX complex (gene repression, telomere chromatin structure) and (2) a DAXX-SETDB1-KAP1-HDAC1 complex that represses endogenous retroviruses independently of ATRX and H3.3 incorporation. Histone H3.3 stabilizes DAXX protein levels and can affect DAXX-regulated gene expression without nucleosomal incorporation.","method":"X-ray crystallography, single amino acid mutagenesis, biochemical complex purification, RNA-seq (ERV transcription), ChIP","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 1 / Strong — crystal structure, mutagenesis validating function, two distinct complexes biochemically separated, RNA-seq functional readout; multiple rigorous approaches","pmids":["29084956"],"is_preprint":false},{"year":2017,"finding":"PTEN interacts with DAXX and directly regulates oncogene expression by modulating DAXX-H3.3 association on chromatin, independently of PTEN's enzymatic phosphatase activity. DAXX inhibition specifically suppresses tumor growth in PTEN-deficient glioma models, associated with global H3.3 genomic redistribution.","method":"Co-immunoprecipitation (PTEN-DAXX), ChIP for H3.3, DAXX siRNA knockdown in orthotopic glioma mouse models, RNA-seq","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Strong — co-IP, ChIP-seq, in vivo orthotopic model, enzymatic dead PTEN mutant control; multiple orthogonal methods","pmids":["28497778"],"is_preprint":false},{"year":2017,"finding":"DAXX is targeted for degradation by the CUL3-SPOP E3 ubiquitin ligase complex, where SPOP acts as the substrate adaptor. Knockdown of SPOP or CUL3 leads to DAXX protein upregulation and inversely correlated downregulation of VEGFR2 mRNA. Simultaneous knockdown of SPOP and DAXX reverses VEGFR2 downregulation, establishing DAXX as the mediating substrate.","method":"siRNA knockdown, co-immunoprecipitation, VEGFR2 expression analysis","journal":"Scientific reports","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — epistasis by double knockdown, co-IP interaction, functional readout; single lab","pmids":["28216678"],"is_preprint":false},{"year":2019,"finding":"Cytoplasmic DAXX physically interacts with p62/SQSTM1 and drives p62 liquid phase condensation by inducing p62 oligomerization. This promotes p62 recruitment of Keap1 and subsequent Nrf2-mediated stress response. DAXX promotes p62 puncta formation in the cytoplasm.","method":"Yeast two-hybrid screen, co-immunoprecipitation, immunofluorescence for puncta/condensates, phase separation assays, Nrf2 reporter assays","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Moderate — yeast two-hybrid validated by co-IP, phase condensation mechanism characterized, Nrf2 pathway readout; multiple orthogonal approaches","pmids":["31434890"],"is_preprint":false},{"year":2019,"finding":"ACETYLATION OF SUMO1 MODULATES DAXX-SIM BINDING: Crystal structures of acetylated SUMO1 variants bound to the phosphorylated SIM of Daxx demonstrate that acetylation at K39, K46, or K37 of SUMO1 reduces or eliminates binding to the Daxx phosphoSIM. Acetylation at K37 specifically impacts binding to Daxx but not PML, demonstrating protein-specific structural plasticity in SUMO-SIM interactions.","method":"X-ray crystallography, biochemical binding assays with acetylated SUMO1 variants","journal":"Structure (London, England : 1993)","confidence":"High","confidence_rationale":"Tier 1 / Moderate — crystal structures of SUMO-SIM complexes with PTM variants, quantitative binding data; single lab but rigorous structural methodology","pmids":["31879127"],"is_preprint":false},{"year":2020,"finding":"ATRX promotes repair of telomeric DSBs by two mechanisms: (1) promoting cohesion of sister telomeres, and (2) a DAXX-dependent pathway. Loss of telomeric cohesion combined with DAXX deficiency recapitulates all telomeric DSB repair phenotypes associated with ATRX loss (ALT-associated PML bodies, T-SCEs, ECTSs). DAXX has an independent role in telomeric DSB repair.","method":"ATRX deletion in mouse cells, DAXX knockdown, telomeric DSB induction, T-SCE assays, APB/ECTS quantification, cohesion assays","journal":"PLoS biology","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic deletion, epistasis (ATRX KO + DAXX KD = additive recapitulation of phenotype), multiple orthogonal ALT readouts","pmids":["31895940"],"is_preprint":false},{"year":2020,"finding":"Daxx loss in the pancreas is well tolerated under normal conditions but creates a permissive transcriptional state (associated with endogenous retroviral element dysregulation) that cooperates with inflammation and Men1 loss to impair pancreas recovery from inflammatory stress. ERV dysregulation by Daxx loss also dysregulates nearby endogenous genes, with corresponding findings in human PanNETs with DAXX mutations.","method":"Conditional mouse Daxx knockout, RNA-seq (ERV and gene expression), pancreatitis model, Men1 double-KO","journal":"Science advances","confidence":"High","confidence_rationale":"Tier 2 / Strong — conditional genetic KO in vivo with defined physiological stressor, RNA-seq, double-KO epistasis, human data correlation","pmids":["32821827"],"is_preprint":false},{"year":2020,"finding":"Daxx inhibits HIV-1 reverse transcription and uncoating in a SIM (C-terminal SUMO-interacting motif)-dependent manner. Daxx associates with incoming HIV-1 cores through SIM-dependent interaction with cyclophilin A (CypA) and capsid (CA), and resides in a multiprotein complex with TNPO3, TRIM5α, and TRIM34 on viral capsids. Daxx prevents HIV-1 uncoating in a SIM-dependent manner.","method":"Quantitative proteomic screen of HIV-1 core-associated proteins, co-immunoprecipitation, SIM deletion mutants, viral uncoating assays, reverse transcription quantification","journal":"Viruses","confidence":"High","confidence_rationale":"Tier 2 / Moderate — quantitative proteomics + co-IP + SIM mutant functional assays + uncoating assays; multiple orthogonal methods in single study","pmids":["32545337"],"is_preprint":false},{"year":2021,"finding":"DAXX possesses protein-folding activities in an ATP-independent manner via its polyD/E region: DAXX prevents aggregation, solubilizes pre-existing aggregates, and unfolds misfolded species of model substrates and neurodegeneration-associated proteins. DAXX prevents and reverses aggregation of its validated in vivo clients p53 and MDM2, and can restore native conformation and function to tumor-associated, aggregation-prone p53 mutants.","method":"In vitro aggregation assays, disaggregation assays, polyD/E deletion mutants, p53/MDM2 client protein functional assays, cell-based assays with p53 mutants","journal":"Nature","confidence":"High","confidence_rationale":"Tier 1 / Strong — reconstitution in vitro with multiple substrates, mutagenesis of polyD/E domain, in vivo client validation, replicated across multiple model proteins","pmids":["34408321"],"is_preprint":false},{"year":2021,"finding":"Morc3 interacts with Daxx in a SUMO-dependent manner (Morc3 SUMOylation + Daxx SUMO-binding). In Morc3 knockout cells, histone H3.3 is strongly reduced at Morc3-binding sites (ERV regions), and Morc3 mutants that fail to interact with Daxx also fail to maintain ERV H3.3 deposition, establishing Morc3 as a critical upstream regulator of Daxx-mediated H3.3 incorporation.","method":"Co-immunoprecipitation, ChIP for H3.3, ATAC-seq, Morc3 KO cells, Morc3 ATPase and SUMOylation mutants","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic KO, multiple mutants, ChIP-seq, ATAC-seq, mechanistic interaction via SUMO-SIM; multiple orthogonal approaches","pmids":["34650047"],"is_preprint":false},{"year":2022,"finding":"DAXX and ATRX knockout cells that have acquired ALT-like features show defects in p53 chromatin binding and DNA damage response. ChIP-seq and ATAC-seq revealed genome-wide reduction in p53 DNA-binding and loss of chromatin accessibility at p53 response elements, with depletion of histone H3.3 and accumulation of γH2AX at many p53 sites including subtelomeres.","method":"DAXX and ATRX knockout, ChIP-seq (p53, H3.3, γH2AX), ATAC-seq, RNA-seq","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic KO, genome-wide ChIP-seq and ATAC-seq with multiple histone marks, mechanistic link between H3.3 deposition and p53 function","pmids":["36028493"],"is_preprint":false},{"year":2022,"finding":"SARS-CoV-2 infection triggers DAXX relocalization to cytoplasmic sites and promotes its degradation. Mechanistically, viral papain-like protease (PLpro) and the proteasome mediate DAXX degradation. DAXX restricts an early, post-entry step of the SARS-CoV-2 life cycle through its D/E domain (also necessary for protein-folding activity), independently of the SUMOylation pathway.","method":"CRISPR/Cas9 screen, PLpro expression studies, proteasome inhibitor experiments, DAXX domain mutants, viral replication assays","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Strong — CRISPR screen identification, mechanistic validation with PLpro and proteasome inhibitors, domain mutant mapping, multiple orthogonal methods","pmids":["35508460"],"is_preprint":false},{"year":2023,"finding":"DAXX recruits histone methyltransferases to promote H3K9me3 catalysis on new histone H3.3-H4 prior to DNA deposition, providing a de novo H3K9me3 deposition mechanism and a molecular basis for heterochromatin assembly. Exploratory interactomics defined previously uncharacterized histone-dependent complexes in the histone chaperone network.","method":"Exploratory interactomics (quantitative proteomics), H3K9 methylation assays, ChIP for H3K9me3, reconstitution experiments","journal":"Molecular cell","confidence":"High","confidence_rationale":"Tier 1-2 / Moderate — interactomics, reconstitution-type methylation assays, ChIP validation; single study but multiple orthogonal approaches","pmids":["36868228"],"is_preprint":false},{"year":2023,"finding":"DAXX interacts with SREBP1 and SREBP2 and activates SREBP-mediated lipogenic gene transcription. DAXX associates with lipogenic gene promoters through SREBPs (ChIP). DAXX's SUMO-binding activity (via C-terminal SIM2) is critical for SREBP1/2 activation and lipogenesis; a DAXX SIM2 mutant fails to bind SREBP1/2, has weakened chromatin recruitment, and is defective in promoting lipogenesis and tumor growth. A cell-membrane permeable SIM2 peptide disrupts DAXX-SREBP1/2 interactions and inhibits lipogenesis.","method":"Co-immunoprecipitation, ChIP, siRNA knockdown, DAXX SIM mutants, lipidomic analysis, tumor xenograft models, cell-penetrating peptide assay","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Strong — co-IP interaction, ChIP, mutagenesis (SIM2), lipidomics, in vivo xenograft, peptide inhibitor validation; multiple orthogonal methods","pmids":["37045819"],"is_preprint":false},{"year":2024,"finding":"DAXX promotes genome stability at centromeres independently of ATRX by preventing R-loop accumulation and DNA double-strand break (DSB) formation. This ATRX-independent function requires DAXX's interaction with histone H3.3 but is independent of H3.3 deposition into nucleosomes and does not reflect centromeric transcription repression. DAXX depletion mobilizes BRCA1 at centromeres, consistent with BRCA1's role in counteracting R-loops.","method":"DAXX depletion (siRNA/KO) in glioma and pNET cell lines, R-loop detection (S9.6 immunofluorescence/DRIP-seq), γH2AX quantification at centromeres, H3.3 interaction mutants, BRCA1 localization","journal":"Nucleic acids research","confidence":"High","confidence_rationale":"Tier 2 / Moderate — DRIP-seq and immunofluorescence for R-loops, γH2AX assays, H3.3 interaction mutants, BRCA1 epistasis; multiple orthogonal methods","pmids":["38038252"],"is_preprint":false},{"year":2011,"finding":"EBV major tegument protein BNRF1 interacts with Daxx at PML nuclear bodies and disrupts the Daxx-ATRX chromatin remodeling complex. Knockdown of Daxx and ATRX induces reactivation of EBV from latently infected lymphoblastoid cell lines, indicating Daxx and ATRX maintain viral chromatin in a repressed state.","method":"Co-immunoprecipitation (BNRF1-Daxx), siRNA knockdown, EBV reactivation assays, domain mapping","journal":"PLoS pathogens","confidence":"High","confidence_rationale":"Tier 2 / Moderate — co-IP interaction mapping, genetic KD epistasis showing Daxx/ATRX suppress EBV reactivation, multiple functional assays","pmids":["22102817"],"is_preprint":false},{"year":2012,"finding":"Human Daxx protein levels are increased in response to retroviral (ASV) infection. Daxx is physically associated with both viral DNA and DNA methyltransferases (DNMTs) and is required for long-term viral silencing maintenance and full viral DNA methylation, including initiation of epigenetic repression (repressive histone marks detectable within 12h, LTR DNA methylation within 3 days post-infection).","method":"ChIP for Daxx on viral DNA, co-immunoprecipitation with DNMTs, bisulfite methylation assays, Daxx-null cell comparison, time-course analysis","journal":"Journal of virology","confidence":"High","confidence_rationale":"Tier 2 / Strong — ChIP on viral DNA, co-IP with DNMTs, genetic null comparison, time-course mechanistic data; multiple orthogonal methods","pmids":["23221555"],"is_preprint":false},{"year":2017,"finding":"During myogenic differentiation, PML NB loss triggers DAXX relocalization from PML NBs to chromocentres. MyoD expression is sufficient to cause PML NB loss. PML silencing induces DAXX relocalization. The C-terminal SUMO-interacting motif of DAXX is required for its co-localization with ATRX in heterochromatin domains during myotube formation.","method":"Immunofluorescence, siRNA knockdown of PML, MyoD overexpression, DAXX SIM-C deletion mutants, live imaging","journal":"Cell death & disease","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — localization experiments tied to mechanistic triggers (MyoD, PML KD) and SUMO-SIM requirement demonstrated; single lab","pmids":["28358373"],"is_preprint":false},{"year":2002,"finding":"HCMV tegument protein pp71 specifically interacts with human Daxx (hDaxx) in a yeast two-hybrid screen and in co-transfection experiments. Co-transfection of hDaxx enhances pp71 recruitment to ND10/PML nuclear bodies. pp71-mediated transactivation of the HCMV major immediate-early enhancer-promoter is synergistically enhanced in the presence of hDaxx.","method":"Yeast two-hybrid, co-immunoprecipitation, immunofluorescence co-localization, transactivation assays","journal":"Journal of virology","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — co-localization, co-IP, functional transactivation assay, single lab","pmids":["11992005"],"is_preprint":false}],"current_model":"DAXX is a multifunctional scaffold/chaperone protein that operates through several mechanistically distinct activities: (1) it is a dedicated histone H3.3 chaperone that, in complex with ATRX, deposits H3.3 at heterochromatic regions (telomeres, pericentromeres, and repetitive elements) to maintain chromatin integrity, and independently recruits histone methyltransferases to catalyze de novo H3K9me3 on new H3.3-H4 prior to DNA deposition; (2) it functions as a transcriptional co-repressor by binding sumoylated transcription factors (via its SUMO-interacting motifs, regulated by CK2 phosphorylation), recruiting HDAC1 and DNMTs to silence target genes; (3) it modulates apoptosis by binding the Fas death domain and activating the ASK1-JNK pathway, while in the nucleus sequestering pro-apoptotic signals and acting anti-apoptotically; (4) it stabilizes MDM2 by bridging MDM2 to the deubiquitinase Hausp/USP7, a function disrupted by ATM-dependent phosphorylation at Ser564 upon DNA damage to activate p53; (5) it acts as an ATP-independent molecular chaperone/disaggregase through its polyD/E region, resolving misfolded proteins including p53 and MDM2; (6) it restricts diverse viruses (herpesviruses, retroviruses, SARS-CoV-2, HIV-1) via chromatin-based silencing of viral DNA and SIM-dependent interactions with incoming viral capsids; and (7) its subcellular localization—primarily PML nuclear bodies in steady state, with regulated redistribution to cytoplasm, centromeres, or chromatin—is controlled by phosphorylation (ATM, CK2, HIPK1), sumoylation, interactions with DJ-1 and PML, and import via importin alpha3."},"narrative":{"mechanistic_narrative":"DAXX is a multifunctional nuclear scaffold and ATP-independent molecular chaperone that links chromatin assembly, transcriptional repression, and stress/apoptotic signaling, operating predominantly from PML nuclear bodies under steady state [PMID:10684855, PMID:34408321]. As a dedicated histone H3.3 chaperone it partners with ATRX to deposit H3.3 and maintain a repressed, H3K9me3-marked chromatin state at telomeres, pericentromeres, and tandem repetitive/retrotransposon elements, recruiting SUV39H to catalyze H3K9 trimethylation and methyltransferases that mark new H3.3-H4 prior to DNA deposition [PMID:26340527, PMID:36868228]. Structural and biochemical dissection resolves DAXX into mechanistically distinct complexes: an ATRX-DAXX complex governing telomeric chromatin and an ATRX-independent DAXX-SETDB1-KAP1-HDAC1 complex silencing endogenous retroviruses, with H3.3 binding itself stabilizing DAXX protein [PMID:29084956]. DAXX additionally guards genome stability at centromeres in an ATRX-independent, H3.3-deposition-independent manner by preventing R-loop accumulation and double-strand breaks, and its loss compromises p53 chromatin binding genome-wide [PMID:38038252, PMID:36028493]. As a transcriptional co-repressor it binds sumoylated factors through phosphorylation-regulated SUMO-interacting motifs and recruits HDAC1 and DNMT1 to silence targets, a logic exemplified by SUMO-dependent repression of Smad4 and RelB-directed DNMT1 recruitment to NF-κB target promoters [PMID:15637079, PMID:18413714, PMID:21474068]. DAXX stabilizes MDM2 by bridging it to the deubiquitinase USP7/Hausp and is released upon ATM-dependent Ser564 phosphorylation during DNA damage to permit MDM2 self-degradation and p53 activation [PMID:16845383, PMID:23405218]. In its chaperone capacity DAXX uses a polyD/E region to prevent and reverse aggregation of clients including p53 and MDM2 [PMID:34408321]. DAXX governs apoptosis bidirectionally—binding the Fas death domain and activating the ASK1-JNK pathway in the cytoplasm while acting anti-apoptotically in the nucleus, with the balance set by its regulated localization [PMID:9215629, PMID:9743501, PMID:11495919]. DAXX broadly restricts viruses, silencing retroviral and herpesviral DNA via HDAC/DNMT recruitment and blocking incoming HIV-1 cores and an early SARS-CoV-2 step through SIM- and D/E-domain-dependent mechanisms [PMID:15795247, PMID:23221555, PMID:32545337, PMID:35508460]. Its localization and activity are controlled by phosphorylation (ATM, CK2, HIPK1), sumoylation, and partners including PML, DJ-1, and importin alpha3 [PMID:10684855, PMID:12529400, PMID:15983381, PMID:17661348, PMID:21474068].","teleology":[{"year":1998,"claim":"Establishing how Fas engagement is transduced, DAXX was shown to bind the Fas death domain and to activate the JNK pathway through ASK1, defining a FADD-independent apoptotic branch.","evidence":"Yeast two-hybrid, co-IP with dominant-negative and kinase-dead ASK1 mutants, apoptosis assays","pmids":["9215629","9743501"],"confidence":"High","gaps":["Did not resolve the nuclear functions of DAXX","Physiological relevance of overexpression-based pro-apoptotic activity unaddressed"]},{"year":1999,"claim":"Genetic knockout in mice unexpectedly showed DAXX is required to suppress apoptosis in the embryo, reframing it as anti-apoptotic in vivo and exposing a paradox with its overexpression phenotype.","evidence":"Targeted gene deletion in mice with embryonic phenotyping","pmids":["10444590"],"confidence":"High","gaps":["Molecular basis of the anti-apoptotic requirement not defined","Did not distinguish nuclear vs cytoplasmic contributions"]},{"year":2003,"claim":"Endogenous depletion studies reconciled the paradox by showing DAXX is anti-apoptotic and a transcriptional repressor of NF-κB/E2F1 targets, while also being required for stress-induced JNK death in primary cells.","evidence":"RNAi/siRNA knockdown with Bcl-2 rescue, transcriptional target analysis, UV/oxidative stress and PML co-silencing epistasis","pmids":["12482920","14517282","15861194"],"confidence":"High","gaps":["Direct transcriptional target promoters not all mapped","Switch between pro- and anti-apoptotic states not mechanistically defined"]},{"year":2003,"claim":"DAXX localization emerged as the control point for its dual function: PML, HIPK1, ASK1, and DJ-1 partition DAXX between PML bodies, chromatin, and cytoplasm, gating repressor versus apoptotic activity.","evidence":"Co-IP, immunofluorescence, kinase/phospho-site mutagenesis (HIPK1 Ser669), PML-KO and DJ-1 mutant epistasis","pmids":["10684855","12529400","11495919","15983381"],"confidence":"High","gaps":["Quantitative thresholds governing redistribution unclear","Integration of multiple localization inputs not unified"]},{"year":2005,"claim":"DAXX was defined as a SUMO-dependent co-repressor that reads sumoylated transcription factors and recruits HDAC/DNMT machinery, providing the molecular logic for gene silencing.","evidence":"ChIP, SUMO-site mutagenesis (Smad4 K159), in vitro binding, RNAi rescue; DMAP1/DNMT1 complex co-IP","pmids":["15637079","14978102"],"confidence":"High","gaps":["Generality across SUMO substrates not established at this stage","Direct DAXX SIM determinants not yet mapped"]},{"year":2006,"claim":"DAXX was shown to control the p53/MDM2 axis by bridging MDM2 to the deubiquitinase USP7/Hausp to stabilize MDM2, then releasing MDM2 upon DNA damage to activate p53.","evidence":"Co-IP, siRNA knockdown, MDM2 stability and ubiquitination assays, DNA damage dissociation","pmids":["16845383"],"confidence":"High","gaps":["Damage signal driving dissociation not yet identified","Whether DAXX directly modifies MDM2 unresolved"]},{"year":2008,"claim":"DAXX was placed at the apex of epigenetic gene silencing by recruiting DNMT1 to RelB target promoters and methylating their DNA, linking transcriptional repression to heritable promoter methylation.","evidence":"ChIP for Dnmt1, daxx-/- and relB-/- cell lines, DNA methylation assays, rescue by Daxx restoration","pmids":["18413714","16982744"],"confidence":"High","gaps":["Mechanism of DNMT1 recruitment specificity unclear","Scope of methylation targets beyond RelB genes undefined"]},{"year":2011,"claim":"Structural and kinase studies dissected the DAXX SUMO-interacting motifs, showing CK2 phosphorylation tunes SUMO-1 paralog selectivity and an intramolecular SIM-N autoregulatory mechanism, providing the biophysical basis for SUMO-dependent recruitment.","evidence":"NMR structures of SIM:SUMO complexes, CK2 kinase and phospho-site mutagenesis, binding affinity measurements, apoptosis reporters","pmids":["21474068","21383010"],"confidence":"High","gaps":["In vivo impact of paralog selectivity on specific targets not fully mapped","Coordination of two SIMs in native complexes unclear"]},{"year":2012,"claim":"DAXX was established as an H3.3 chaperone acting with ATRX to deposit H3.3 and maintain repressed chromatin at centromeric/pericentromeric and transgene loci, redirecting its function toward heterochromatin maintenance.","evidence":"Live-cell imaging, FRAP, ChIP for H3.3 and histone marks under heat shock, ATRX-negative cell comparison, ICP0-induced activation","pmids":["22572957","22976303"],"confidence":"Medium","gaps":["Whether repression and H3.3 deposition are separable not yet resolved","Single-locus models may not generalize genome-wide"]},{"year":2013,"claim":"The damage signal releasing DAXX from MDM2 was identified as ATM-dependent Ser564 phosphorylation, closing the loop on how DNA damage converts DAXX from an MDM2 stabilizer to a p53 activator.","evidence":"Phospho-specific antibodies, ATM inhibitor/KO, Ser564 mutagenesis, Daxx-Mdm2 co-IP after damage","pmids":["23405218"],"confidence":"High","gaps":["Reconciliation with later reports of no p53 transcriptional effect needed","Phosphatase counter-regulation not addressed here"]},{"year":2015,"claim":"Genome-wide profiling demonstrated DAXX/ATRX targets repetitive elements and telomeres, with SUV39H-dependent H3K9me3 enforcing repression, defining the mechanism of heterochromatin-based repeat silencing.","evidence":"ChIP-seq, RNA-seq, siRNA knockdown, DNA hypomethylation treatment, H3K9me3 ChIP","pmids":["26340527"],"confidence":"High","gaps":["Order of H3.3 deposition versus H3K9me3 not yet established","Upstream recruitment factors for repeat targeting unclear"]},{"year":2017,"claim":"Crystallography of the ATRX-DAXX interface and complex purification resolved DAXX into two distinct repressive assemblies—ATRX-DAXX for telomeres and DAXX-SETDB1-KAP1-HDAC1 for ERVs—and showed H3.3 binding stabilizes DAXX even without nucleosomal incorporation.","evidence":"X-ray crystallography, single-residue mutagenesis, biochemical complex purification, RNA-seq, ChIP; PTEN-DAXX co-IP and H3.3 ChIP","pmids":["29084956","28497778"],"confidence":"High","gaps":["How DAXX is partitioned between the two complexes in cells unclear","Non-nucleosomal H3.3 functions incompletely defined"]},{"year":2021,"claim":"DAXX was shown to be an ATP-independent chaperone/disaggregase via its polyD/E region, unifying its scaffolding roles with direct protein quality control of clients p53 and MDM2.","evidence":"In vitro aggregation/disaggregation assays, polyD/E deletion mutants, p53/MDM2 client and tumor-mutant functional assays; Morc3 SUMO-dependent upstream recruitment","pmids":["34408321","34650047"],"confidence":"High","gaps":["Full client repertoire in vivo unknown","Relationship between chaperone and chromatin functions not integrated"]},{"year":2022,"claim":"DAXX/ATRX loss was shown to impair p53 chromatin binding and DNA damage response genome-wide via H3.3 depletion, connecting DAXX's chromatin chaperone role to tumor-suppressor function.","evidence":"DAXX/ATRX knockout, ChIP-seq (p53, H3.3, γH2AX), ATAC-seq, RNA-seq","pmids":["36028493"],"confidence":"High","gaps":["Causal sequence between H3.3 loss and p53 binding defect not fully resolved","ALT acquisition as confounder"]},{"year":2022,"claim":"DAXX was established as a broad antiviral restriction factor that silences viral DNA (retroviruses, herpesviruses) and blocks early steps of HIV-1 and SARS-CoV-2 through SIM- and D/E-domain-dependent mechanisms, with viruses encoding countermeasures to degrade it.","evidence":"ChIP on viral DNA, co-IP with DNMTs/capsid factors, SIM and D/E domain mutants, CRISPR screen, proteasome and PLpro/pp71/BNRF1 degradation studies","pmids":["23221555","32545337","35508460","22102817","19369322"],"confidence":"High","gaps":["Whether one DAXX activity underlies all antiviral effects unclear","Capsid-binding mechanism not structurally defined"]},{"year":2024,"claim":"DAXX was found to protect centromere genome stability by preventing R-loop accumulation and DSBs in an ATRX- and H3.3-deposition-independent but H3.3-binding-dependent manner, separating a chromatin-protective role from transcriptional silencing.","evidence":"DAXX depletion in glioma/pNET lines, DRIP-seq and S9.6 immunofluorescence, γH2AX assays, H3.3 interaction mutants, BRCA1 localization","pmids":["38038252"],"confidence":"High","gaps":["How H3.3-bound DAXX suppresses R-loops mechanistically unclear","Relationship to BRCA1 recruitment not fully defined"]},{"year":null,"claim":"How DAXX's multiple modular activities—H3.3 chaperone/disaggregase, SUMO-dependent co-repressor, MDM2/p53 regulator, and antiviral restriction—are coordinately partitioned and prioritized within a single cell under given signals remains unresolved.","evidence":"","pmids":[],"confidence":"High","gaps":["No unified model linking localization control to selection among competing activities","Quantitative stoichiometry of distinct DAXX complexes in vivo unknown"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0042393","term_label":"histone binding","supporting_discovery_ids":[37,40,52,54]},{"term_id":"GO:0044183","term_label":"protein folding chaperone","supporting_discovery_ids":[48]},{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[4,13,23,39,53]},{"term_id":"GO:0060090","term_label":"molecular adaptor activity","supporting_discovery_ids":[16,49,43]},{"term_id":"GO:0098772","term_label":"molecular function regulator activity","supporting_discovery_ids":[16,1]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[3,24,8]},{"term_id":"GO:0005829","term_label":"cytosol","supporting_discovery_ids":[7,43,51]},{"term_id":"GO:0000228","term_label":"nuclear chromosome","supporting_discovery_ids":[31,37,54]},{"term_id":"GO:0005730","term_label":"nucleolus","supporting_discovery_ids":[21]}],"pathway":[{"term_id":"R-HSA-4839726","term_label":"Chromatin organization","supporting_discovery_ids":[37,40,52]},{"term_id":"R-HSA-74160","term_label":"Gene expression (Transcription)","supporting_discovery_ids":[13,23,39,53]},{"term_id":"R-HSA-5357801","term_label":"Programmed Cell Death","supporting_discovery_ids":[0,1,9]},{"term_id":"R-HSA-168256","term_label":"Immune System","supporting_discovery_ids":[14,56,47,51]},{"term_id":"R-HSA-73894","term_label":"DNA Repair","supporting_discovery_ids":[50,54,45]},{"term_id":"R-HSA-392499","term_label":"Metabolism of proteins","supporting_discovery_ids":[48,16]}],"complexes":["ATRX-DAXX complex","DAXX-SETDB1-KAP1-HDAC1 complex","DAXX-DMAP1-DNMT1 complex","PML nuclear bodies"],"partners":["ATRX","PML","MDM2","USP7","ASK1","HDAC1","DNMT1","DJ-1"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"Q9UER7","full_name":"Death domain-associated protein 6","aliases":["Daxx","hDaxx","ETS1-associated protein 1","EAP1","Fas death domain-associated protein"],"length_aa":740,"mass_kda":81.4,"function":"Transcription corepressor known to repress transcriptional potential of several sumoylated transcription factors. Down-regulates basal and activated transcription. Its transcription repressor activity is modulated by recruiting it to subnuclear compartments like the nucleolus or PML/POD/ND10 nuclear bodies through interactions with MCSR1 and PML, respectively. Seems to regulate transcription in PML/POD/ND10 nuclear bodies together with PML and may influence TNFRSF6-dependent apoptosis thereby. Inhibits transcriptional activation of PAX3 and ETS1 through direct protein-protein interactions. Modulates PAX5 activity; the function seems to involve CREBBP. Acts as an adapter protein in a MDM2-DAXX-USP7 complex by regulating the RING-finger E3 ligase MDM2 ubiquitination activity. Under non-stress condition, in association with the deubiquitinating USP7, prevents MDM2 self-ubiquitination and enhances the intrinsic E3 ligase activity of MDM2 towards TP53, thereby promoting TP53 ubiquitination and subsequent proteasomal degradation. Upon DNA damage, its association with MDM2 and USP7 is disrupted, resulting in increased MDM2 autoubiquitination and consequently, MDM2 degradation, which leads to TP53 stabilization. Acts as a histone chaperone that facilitates deposition of histone H3.3. Acts as a targeting component of the chromatin remodeling complex ATRX:DAXX which has ATP-dependent DNA translocase activity and catalyzes the replication-independent deposition of histone H3.3 in pericentric DNA repeats outside S-phase and telomeres, and the in vitro remodeling of H3.3-containing nucleosomes. Does not affect the ATPase activity of ATRX but alleviates its transcription repression activity. Upon neuronal activation associates with regulatory elements of selected immediate early genes where it promotes deposition of histone H3.3 which may be linked to transcriptional induction of these genes. Required for the recruitment of histone H3.3:H4 dimers to PML-nuclear bodies (PML-NBs); the process is independent of ATRX and facilitated by ASF1A; PML-NBs are suggested to function as regulatory sites for the incorporation of newly synthesized histone H3.3 into chromatin. In case of overexpression of centromeric histone variant CENPA (as found in various tumors) is involved in its mislocalization to chromosomes; the ectopic localization involves a heterotypic tetramer containing CENPA, and histones H3.3 and H4 and decreases binding of CTCF to chromatin. Proposed to mediate activation of the JNK pathway and apoptosis via MAP3K5 in response to signaling from TNFRSF6 and TGFBR2. Interaction with HSPB1/HSP27 may prevent interaction with TNFRSF6 and MAP3K5 and block DAXX-mediated apoptosis. In contrast, in lymphoid cells JNC activation and TNFRSF6-mediated apoptosis may not involve DAXX. Shows restriction activity towards human cytomegalovirus (HCMV). Plays a role as a positive regulator of the heat shock transcription factor HSF1 activity during the stress protein response (PubMed:15016915)","subcellular_location":"Nucleus","url":"https://www.uniprot.org/uniprotkb/Q9UER7/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/DAXX","classification":"Not Classified","n_dependent_lines":369,"n_total_lines":1208,"dependency_fraction":0.3054635761589404},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[{"gene":"CSNK2B","stoichiometry":0.2},{"gene":"SSRP1","stoichiometry":0.2}],"url":"https://opencell.sf.czbiohub.org/search/DAXX","total_profiled":1310},"omim":[{"mim_id":"619720","title":"BRYANT-LI-BHOJ NEURODEVELOPMENTAL SYNDROME 1; BRYLIB1","url":"https://www.omim.org/entry/619720"},{"mim_id":"617259","title":"DDB1- AND CUL4-ASSOCIATED FACTOR 1; DCAF1","url":"https://www.omim.org/entry/617259"},{"mim_id":"613733","title":"MENIN 1; MEN1","url":"https://www.omim.org/entry/613733"},{"mim_id":"611440","title":"WD REPEAT-CONTAINING PROTEIN 46; WDR46","url":"https://www.omim.org/entry/611440"},{"mim_id":"611439","title":"ZINC FINGER- AND BTB DOMAIN-CONTAINING PROTEIN 22; ZBTB22","url":"https://www.omim.org/entry/611439"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Enhanced","locations":[{"location":"Nucleoplasm","reliability":"Enhanced"},{"location":"Nuclear bodies","reliability":"Enhanced"}],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in all","driving_tissues":[],"url":"https://www.proteinatlas.org/search/DAXX"},"hgnc":{"alias_symbol":["DAP6"],"prev_symbol":[]},"alphafold":{"accession":"Q9UER7","domains":[{"cath_id":"1.10.8.810","chopping":"58-136","consensus_level":"high","plddt":93.4468,"start":58,"end":136},{"cath_id":"1.10.287","chopping":"184-247","consensus_level":"medium","plddt":96.6128,"start":184,"end":247}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9UER7","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q9UER7-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q9UER7-F1-predicted_aligned_error_v6.png","plddt_mean":62.56},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=DAXX","jax_strain_url":"https://www.jax.org/strain/search?query=DAXX"},"sequence":{"accession":"Q9UER7","fasta_url":"https://rest.uniprot.org/uniprotkb/Q9UER7.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q9UER7/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9UER7"}},"corpus_meta":[{"pmid":"21252315","id":"PMC_21252315","title":"DAXX/ATRX, 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chemistry","url":"https://pubmed.ncbi.nlm.nih.gov/19465479","citation_count":27,"is_preprint":false},{"pmid":"19690170","id":"PMC_19690170","title":"Daxx is a transcriptional repressor of CCAAT/enhancer-binding protein beta.","date":"2009","source":"The Journal of biological chemistry","url":"https://pubmed.ncbi.nlm.nih.gov/19690170","citation_count":26,"is_preprint":false},{"pmid":"28216678","id":"PMC_28216678","title":"The CUL3-SPOP-DAXX axis is a novel regulator of VEGFR2 expression in vascular endothelial cells.","date":"2017","source":"Scientific reports","url":"https://pubmed.ncbi.nlm.nih.gov/28216678","citation_count":26,"is_preprint":false},{"pmid":"23405218","id":"PMC_23405218","title":"Phosphorylation of Daxx by ATM contributes to DNA damage-induced p53 activation.","date":"2013","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/23405218","citation_count":25,"is_preprint":false},{"pmid":"30021865","id":"PMC_30021865","title":"Hotspot DAXX, PTCH2 and CYFIP2 mutations in pancreatic neuroendocrine neoplasms.","date":"2019","source":"Endocrine-related cancer","url":"https://pubmed.ncbi.nlm.nih.gov/30021865","citation_count":24,"is_preprint":false},{"pmid":"30336783","id":"PMC_30336783","title":"DAXX promotes ovarian cancer ascites cell proliferation and migration by activating the ERK signaling pathway.","date":"2018","source":"Journal of ovarian research","url":"https://pubmed.ncbi.nlm.nih.gov/30336783","citation_count":24,"is_preprint":false},{"pmid":"16331268","id":"PMC_16331268","title":"Physical and functional interactions between Daxx and STAT3.","date":"2006","source":"Oncogene","url":"https://pubmed.ncbi.nlm.nih.gov/16331268","citation_count":24,"is_preprint":false},{"pmid":"14637155","id":"PMC_14637155","title":"Long form of cellular FLICE-inhibitory protein interacts with Daxx and prevents Fas-induced JNK activation.","date":"2003","source":"Biochemical and biophysical research communications","url":"https://pubmed.ncbi.nlm.nih.gov/14637155","citation_count":24,"is_preprint":false},{"pmid":"20185822","id":"PMC_20185822","title":"DAXX is a new AIRE-interacting protein.","date":"2010","source":"The Journal of biological chemistry","url":"https://pubmed.ncbi.nlm.nih.gov/20185822","citation_count":22,"is_preprint":false},{"pmid":"15033475","id":"PMC_15033475","title":"Physical and functional interactions between Daxx and TSG101.","date":"2004","source":"Biochemical and biophysical research communications","url":"https://pubmed.ncbi.nlm.nih.gov/15033475","citation_count":21,"is_preprint":false},{"pmid":"37169669","id":"PMC_37169669","title":"Endoscopic ultrasound fine-needle biopsy to assess DAXX/ATRX expression and alternative lengthening of telomeres status in non-functional pancreatic neuroendocrine tumors.","date":"2023","source":"Pancreatology : official journal of the International Association of Pancreatology (IAP) ... [et al.]","url":"https://pubmed.ncbi.nlm.nih.gov/37169669","citation_count":21,"is_preprint":false},{"pmid":"31879127","id":"PMC_31879127","title":"Acetylation of SUMO1 Alters Interactions with the SIMs of PML and Daxx in a Protein-Specific Manner.","date":"2019","source":"Structure (London, England : 1993)","url":"https://pubmed.ncbi.nlm.nih.gov/31879127","citation_count":21,"is_preprint":false},{"pmid":"18003619","id":"PMC_18003619","title":"Physical interactions and functional coupling between Daxx and sodium hydrogen exchanger 1 in ischemic cell death.","date":"2007","source":"The Journal of biological chemistry","url":"https://pubmed.ncbi.nlm.nih.gov/18003619","citation_count":21,"is_preprint":false},{"pmid":"37045819","id":"PMC_37045819","title":"DAXX drives de novo lipogenesis and contributes to tumorigenesis.","date":"2023","source":"Nature communications","url":"https://pubmed.ncbi.nlm.nih.gov/37045819","citation_count":20,"is_preprint":false},{"pmid":"32203224","id":"PMC_32203224","title":"DAXX inhibits cancer stemness and epithelial-mesenchymal transition in gastric cancer.","date":"2020","source":"British journal of cancer","url":"https://pubmed.ncbi.nlm.nih.gov/32203224","citation_count":20,"is_preprint":false},{"pmid":"28796347","id":"PMC_28796347","title":"Clinicopathological analysis of ATRX, DAXX and NOTCH receptor expression in angiosarcomas.","date":"2017","source":"Histopathology","url":"https://pubmed.ncbi.nlm.nih.gov/28796347","citation_count":20,"is_preprint":false},{"pmid":"31029033","id":"PMC_31029033","title":"DAXX, as a Tumor Suppressor, Impacts DNA Damage Repair and Sensitizes BRCA-Proficient TNBC Cells to PARP Inhibitors.","date":"2019","source":"Neoplasia (New York, N.Y.)","url":"https://pubmed.ncbi.nlm.nih.gov/31029033","citation_count":20,"is_preprint":false},{"pmid":"26540225","id":"PMC_26540225","title":"Death domain associated protein (Daxx), a multi-functional protein.","date":"2015","source":"Cellular & molecular biology letters","url":"https://pubmed.ncbi.nlm.nih.gov/26540225","citation_count":19,"is_preprint":false},{"pmid":"32203094","id":"PMC_32203094","title":"Telomere length alterations and ATRX/DAXX loss in pituitary adenomas.","date":"2020","source":"Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc","url":"https://pubmed.ncbi.nlm.nih.gov/32203094","citation_count":19,"is_preprint":false},{"pmid":"30747827","id":"PMC_30747827","title":"Performance of DAXX Immunohistochemistry as a Screen for DAXX Mutations in Pancreatic Neuroendocrine Tumors.","date":"2019","source":"Pancreas","url":"https://pubmed.ncbi.nlm.nih.gov/30747827","citation_count":19,"is_preprint":false},{"pmid":"32545337","id":"PMC_32545337","title":"Daxx Inhibits HIV-1 Reverse Transcription and Uncoating in a SUMO-Dependent Manner.","date":"2020","source":"Viruses","url":"https://pubmed.ncbi.nlm.nih.gov/32545337","citation_count":18,"is_preprint":false},{"pmid":"17661348","id":"PMC_17661348","title":"Daxx contains two nuclear localization signals and interacts with importin alpha3.","date":"2008","source":"Journal of cellular biochemistry","url":"https://pubmed.ncbi.nlm.nih.gov/17661348","citation_count":18,"is_preprint":false},{"pmid":"28358373","id":"PMC_28358373","title":"Myogenic differentiation triggers PML nuclear body loss and DAXX relocalization to chromocentres.","date":"2017","source":"Cell death & disease","url":"https://pubmed.ncbi.nlm.nih.gov/28358373","citation_count":18,"is_preprint":false},{"pmid":"38038252","id":"PMC_38038252","title":"DAXX promotes centromeric stability independently of ATRX by preventing the accumulation of R-loop-induced DNA double-stranded breaks.","date":"2024","source":"Nucleic acids research","url":"https://pubmed.ncbi.nlm.nih.gov/38038252","citation_count":17,"is_preprint":false},{"pmid":"37107548","id":"PMC_37107548","title":"ATRX/DAXX: Guarding the Genome against the Hazards of ALT.","date":"2023","source":"Genes","url":"https://pubmed.ncbi.nlm.nih.gov/37107548","citation_count":17,"is_preprint":false}],"cost":{"stage1":{"model":"claude-sonnet-4-6","input_tokens":47640,"output_tokens":15794,"usd":0.189915,"stage1_stop_reason":"end_turn"},"stage2":{"model":"claude-opus-4-8","input_tokens":28695,"output_tokens":6109,"usd":0.1481,"stage2_stop_reason":"end_turn"},"total_usd":0.338015,"stage1_batch_id":"msgbatch_01ACAxJQabDsht39JXeWG22d","stage2_batch_id":"msgbatch_01QEU22A9U5sbPTgsMzTmvSf","note":"batch pricing = 50% of standard"},"stage1_raw":"```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 1997,\n      \"finding\": \"DAXX (Daxx) was identified as a novel protein that binds specifically to the Fas death domain via its C-terminal portion. A different region of Daxx activates both JNK and apoptosis. Overexpression of Daxx enhances Fas-mediated apoptosis and activates the JNK pathway. The Fas-binding domain of Daxx acts as a dominant-negative inhibitor of both Fas-induced apoptosis and JNK activation, and Daxx and FADD define two distinct apoptotic pathways downstream of Fas.\",\n      \"method\": \"Yeast two-hybrid, co-immunoprecipitation, overexpression with dominant-negative mutants, apoptosis assays\",\n      \"journal\": \"Cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — reciprocal binding demonstrated, dominant-negative mapping, multiple functional readouts; foundational paper replicated across many subsequent studies\",\n      \"pmids\": [\"9215629\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1998,\n      \"finding\": \"Daxx activates the JNK kinase kinase ASK1 downstream of the Fas receptor. Upon Fas activation, Daxx interacts with ASK1 and relieves an inhibitory intramolecular interaction between the N- and C-termini of ASK1, thereby activating its kinase activity. Overexpression of a kinase-deficient ASK1 mutant inhibited Fas- and Daxx-induced apoptosis and JNK activation.\",\n      \"method\": \"Co-immunoprecipitation, kinase-deficient mutant rescue experiments, apoptosis assays\",\n      \"journal\": \"Science (New York, N.Y.)\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — mechanistic epistasis with kinase-dead mutant, interaction mapping, replicated in subsequent studies\",\n      \"pmids\": [\"9743501\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1999,\n      \"finding\": \"Genetic knockout of Daxx in mice results in extensive apoptosis and embryonic lethality rather than the hyperproliferative phenotype expected from loss of a pro-apoptotic gene, establishing that Daxx is required to suppress apoptosis in the early embryo.\",\n      \"method\": \"Targeted gene deletion in mice, embryonic phenotypic analysis\",\n      \"journal\": \"Genes & development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — clean genetic KO with defined and unexpected phenotypic readout in vivo\",\n      \"pmids\": [\"10444590\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"PML and Daxx physically interact within PML nuclear bodies (NBs). In the absence of PML, Daxx acquires a dispersed nuclear pattern and activation-induced cell death of splenocytes is profoundly impaired. PML inactivation completely abrogates Daxx's pro-apoptotic ability, placing PML upstream of Daxx in a nuclear body-dependent apoptotic pathway.\",\n      \"method\": \"Co-immunoprecipitation, immunofluorescence, PML-knockout cell/mouse models, apoptosis assays\",\n      \"journal\": \"The Journal of experimental medicine\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic epistasis (PML KO), co-IP, localization studies, multiple orthogonal methods\",\n      \"pmids\": [\"10684855\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"Daxx interacts with the ETS1 transcription factor (via its C-terminal 173 amino acid region binding to the ETS1 N-terminal 139 amino acids) and represses ETS1-mediated transcriptional activation of target genes MMP1 and BCL2. Co-localization of EAP1/Daxx and ETS1 in the nucleus was confirmed in mammalian cells.\",\n      \"method\": \"Yeast two-hybrid, in vitro binding, co-localization, transcriptional reporter assays with deletion mutants\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — interaction domain mapping, co-localization, functional reporter assays; single lab\",\n      \"pmids\": [\"10698492\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"Daxx interacts with Sentrin/SUMO and its conjugating enzyme Ubc9. The Fas-binding C-terminal region of Daxx (amino acids 625-740) maps as the sentrin and Ubc9 binding region, suggesting regulatory overlap between SUMO modification and Fas signaling at this domain.\",\n      \"method\": \"Yeast two-hybrid, GST pull-down, co-immunoprecipitation\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — multiple biochemical methods (yeast two-hybrid, GST pull-down, co-IP) but limited functional follow-up, single lab\",\n      \"pmids\": [\"11112409\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"Phosphorylated dimers of HSP27 interact with Daxx, preventing Daxx's interaction with both ASK1 and Fas, and blocking Daxx-mediated apoptosis. HSP27 also blocks Fas-induced translocation of Daxx from the nucleus to the cytoplasm. A Daxx mutant lacking the HSP27 binding domain is not inhibited, and an HSP27 phosphorylation mutant (oligomer-only form) does not inhibit Daxx.\",\n      \"method\": \"Co-immunoprecipitation, immunofluorescence, apoptosis assays with phosphorylation and binding domain mutants\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — domain mapping, phosphorylation mutants, multiple functional readouts, mechanistic interaction characterized with orthogonal approaches\",\n      \"pmids\": [\"11003656\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2001,\n      \"finding\": \"ASK1 controls the subcellular localization of Daxx: ASK1 sequesters Daxx in the cytoplasm, preventing its nuclear transcriptional repressor activity and enabling Daxx to bind activated Fas and mediate apoptosis. The relative concentration of ASK1 determines whether Daxx functions as a cytoplasmic pro-apoptotic mediator or a nuclear transcriptional repressor.\",\n      \"method\": \"Immunofluorescence, transcriptional reporter assay, co-expression studies\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — localization and functional assays, single lab, mechanistic claim relies on co-expression rather than endogenous contexts\",\n      \"pmids\": [\"11495919\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"RNAi-mediated depletion of endogenous DAXX increases apoptosis (rescued by Bcl-2 overexpression) and causes transcriptional de-repression, including upregulation of NF-κB- and E2F1-regulated target genes, establishing that endogenous DAXX has anti-apoptotic and transcriptional repressor functions.\",\n      \"method\": \"RNAi knockdown, apoptosis assays, Bcl-2 rescue, transcriptional reporter/target gene analysis\",\n      \"journal\": \"Journal of cell science\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — clean endogenous KD with specific rescue (Bcl-2), transcriptional readouts, multiple targets characterized\",\n      \"pmids\": [\"12482920\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"siRNA-mediated Daxx silencing sensitizes cells to Fas- and stress-induced apoptosis, with caspase activation, cytochrome c release, and JNK activation. Daxx silencing has no apparent cytotoxic effects alone; PML silencing has no effect on Daxx silencing-mediated apoptosis, suggesting Daxx inhibits Fas/stress apoptosis by suppressing proapoptotic gene expression outside PML domains.\",\n      \"method\": \"siRNA knockdown, apoptosis assays (caspase activation, cytochrome c release, JNK activation), PML co-silencing epistasis\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — endogenous silencing, multiple orthogonal apoptosis readouts, epistasis with PML, consistent with parallel study (PMID 12482920)\",\n      \"pmids\": [\"14517282\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"HIPK1 physically interacts with Daxx and relocalizes it from PML oncogenic domains (PODs) to chromatin, disrupting Daxx-PML interaction and augmenting Daxx interaction with HDAC1. HIPK1 also phosphorylates Daxx at Ser669; phosphorylation of this site diminishes Daxx transcriptional repression activity at specific promoters. Relocation from PODs is phosphorylation-independent but requires an active HIPK1 kinase domain.\",\n      \"method\": \"Co-immunoprecipitation, immunofluorescence, kinase assay, phospho-site mutagenesis, transcriptional reporter assays\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Moderate — kinase assay identifies phosphorylation site, mutagenesis validates function, co-IP and localization, multiple orthogonal methods, single lab\",\n      \"pmids\": [\"12529400\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2004,\n      \"finding\": \"Daxx interacts with DMAP1 (DNA methyltransferase 1-associated protein), and both form a complex with DNMT1 and co-localize in the nucleus. DMAP1 enhances Daxx-mediated repression of glucocorticoid receptor transcriptional activity, and Daxx protects DMAP1 from protein degradation in vivo.\",\n      \"method\": \"Yeast two-hybrid, co-immunoprecipitation, immunofluorescence, transcriptional reporter assays\",\n      \"journal\": \"Journal of immunology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — interaction and co-localization shown, functional repression assay, single lab\",\n      \"pmids\": [\"14978102\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2005,\n      \"finding\": \"Wild-type DJ-1 sequesters Daxx in the nucleus, preventing Daxx from translocating to the cytoplasm, binding ASK1, and triggering the ASK1-dependent apoptotic pathway. The disease-causing L166P mutant of DJ-1 fails to sequester Daxx. DJ-1 was identified as a Daxx-interacting protein.\",\n      \"method\": \"Yeast two-hybrid screen, co-immunoprecipitation, immunofluorescence, apoptosis assays with DJ-1 mutants\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — interaction mapping, co-IP, localization experiments, functional assays with disease-causing mutant, multiple orthogonal methods\",\n      \"pmids\": [\"15983381\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2005,\n      \"finding\": \"Daxx mediates SUMO-dependent transcriptional repression of Smad4 via the C-terminal domain of Daxx. Daxx-Smad4 interaction requires sumoylation of Smad4 at Lys159 (but not Lys113). ChIP confirmed Daxx recruitment to an endogenous Smad4-targeted promoter in a Lys159-sumoylation-dependent manner. Daxx knockdown by RNAi enhanced TGF-β-induced transcription through a Smad4-dependent, but not K159R-Smad4-dependent, manner.\",\n      \"method\": \"Co-immunoprecipitation, in vitro binding, SUMO site mutagenesis, chromatin immunoprecipitation (ChIP), RNAi knockdown, transcriptional reporter assays\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — ChIP, mutagenesis, RNAi rescue experiments, multiple orthogonal methods, mechanistic clarity\",\n      \"pmids\": [\"15637079\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2005,\n      \"finding\": \"Daxx interacts with avian sarcoma virus (ASV) integrase and viral DNA (via IN), and recruits histone deacetylases (HDACs) to viral DNA, repressing viral gene expression as an antiviral response. HDAC association with viral DNA is Daxx-dependent. Daxx is not required for early integration steps but restricts viral reporter gene expression.\",\n      \"method\": \"Yeast two-hybrid, co-immunoprecipitation, chromatin immunoprecipitation (ChIP), viral transduction assays in Daxx-null vs. Daxx-expressing cells\",\n      \"journal\": \"Journal of virology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP interaction, ChIP for viral DNA, genetic comparison of Daxx-null vs. complemented cells, multiple readouts\",\n      \"pmids\": [\"15795247\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2005,\n      \"finding\": \"Daxx is required for stress-induced cell death and JNK activation in primary fibroblasts. RNAi depletion of Daxx in primary fibroblasts renders cells resistant to UV irradiation- and oxidative stress-induced cell death and impairs MKK/JNK activation, establishing a pro-apoptotic role in physiological settings.\",\n      \"method\": \"RNAi knockdown in primary fibroblasts, UV/H2O2 stress assays, JNK activation assays\",\n      \"journal\": \"Cell death and differentiation\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — clean endogenous KD in primary cells (more physiologically relevant), specific pathway readout, single lab\",\n      \"pmids\": [\"15861194\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"Daxx is required for Mdm2 stability. Daxx simultaneously binds Mdm2 and the deubiquitinase Hausp/USP7, mediating the stabilizing effect of Hausp on Mdm2. Daxx also enhances the intrinsic E3 ubiquitin ligase activity of Mdm2 toward p53. Upon DNA damage, Daxx dissociates from Mdm2, correlating with Mdm2 self-degradation and p53 activation.\",\n      \"method\": \"Co-immunoprecipitation, siRNA knockdown, Mdm2 stability assays, ubiquitination assays, DNA damage experiments\",\n      \"journal\": \"Nature cell biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple co-IP interactions (Daxx-Mdm2-Hausp), functional ubiquitination assays, DNA damage dissociation, mechanistic circuit characterized\",\n      \"pmids\": [\"16845383\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"Daxx represses antiapoptotic genes regulated by NF-κB by interacting with RelB. Daxx forms complexes with RelB while bound to target sites in the cIAP2 promoter (shown by EMSA and ChIP). daxx-/- cells show elevated murine c-IAP mRNA/protein levels, while relB-/- cells show reduced levels. Daxx-mediated sensitization to apoptosis is mechanistically linked to its transcriptional repression through RelB.\",\n      \"method\": \"Co-immunoprecipitation, EMSA, ChIP, daxx-/- and relB-/- mouse embryo cell lines, mRNA/protein level analysis\",\n      \"journal\": \"Cancer research\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — ChIP, EMSA, genetic KO cells as epistasis, direct binding demonstrated, functional apoptosis linkage\",\n      \"pmids\": [\"16982744\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"Daxx interacts with Tcf4 and reduces Tcf4 DNA binding activity and transcriptional activity in the nucleus. Daxx overexpression alters expression of Tcf4 downstream genes (cyclin D1, Hath-1) and induces G1 phase arrest in colon cancer cells.\",\n      \"method\": \"Yeast two-hybrid, co-immunoprecipitation, transcriptional reporter assays, cell cycle analysis\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — co-IP validated interaction, functional transcriptional and cell cycle assays; single lab\",\n      \"pmids\": [\"16569639\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"Axin directly associates with Daxx at endogenous levels and tethers Daxx to p53. The Daxx/Axin complex formation is enhanced by UV irradiation. Axin cooperates with Daxx to stimulate HIPK2-mediated Ser46 phosphorylation of p53 and selectively activates p53 target PUMA. Daxx fails to inhibit colony formation in Axin-/- cells, and UV-induced cell death is attenuated by knockdown of Axin and Daxx.\",\n      \"method\": \"Co-immunoprecipitation (endogenous), UV irradiation assays, Axin-/- cell epistasis, siRNA knockdown, p53 phosphorylation assay, colony formation assay\",\n      \"journal\": \"Cancer research\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — endogenous co-IP, genetic KO epistasis, kinase substrate assay, multiple functional readouts\",\n      \"pmids\": [\"17210684\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"Daxx represses NF-κB transcriptional activity by interacting with p65 and inhibiting p300/CBP-mediated acetylation of p65. Co-immunoprecipitation revealed endogenous Daxx-p65 interaction stimulated by TNFα. ChIP and EMSA confirmed Daxx-mediated repression of NF-κB on target gene promoters.\",\n      \"method\": \"Co-immunoprecipitation, ChIP, EMSA, acetylation assays\",\n      \"journal\": \"Journal of molecular biology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — endogenous co-IP (TNFα-stimulated), ChIP, EMSA, acetylation assay; single lab, mechanistic explanation for repression\",\n      \"pmids\": [\"17362989\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"Daxx is a transcriptional co-repressor of C/EBPβ. Daxx directly interacts with C/EBPβ via amino acids 190-400 of Daxx; co-expression of C/EBPβ relocates Daxx from PODs to the nucleoplasm. Daxx suppresses C/EBPβ basal and p300-enhanced transcriptional activity by decreasing p300-mediated C/EBPβ acetylation. PML co-expression abrogates the repressive Daxx-C/EBPβ interaction by re-recruiting Daxx to PODs.\",\n      \"method\": \"GST pull-down, co-immunoprecipitation, immunofluorescence, transcriptional reporter assays, acetylation assays\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — domain-mapped interaction, multiple functional assays, PML competition mechanism; single lab\",\n      \"pmids\": [\"19690170\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"STRESS-DEPENDENT CHIP-Daxx interaction: CHIP (a ubiquitin E3 ligase/co-chaperone) interacts with Daxx in a stress-dependent manner, ubiquitinating Daxx at Lys630/631 (competing with sumoylation machinery), partitioning Daxx to an insoluble compartment, blocking HIPK2 association with Daxx, preventing p53 Ser46 phosphorylation, and suppressing the p53-dependent apoptotic program.\",\n      \"method\": \"Co-immunoprecipitation, in vitro ubiquitination assay, mutagenesis (Lys630/631), microarray, p53 phosphorylation assays, CHIP KO MEFs\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Moderate — in vitro ubiquitination, mutagenesis identifying specific lysines, KO cells, microarray validation; multiple orthogonal methods\",\n      \"pmids\": [\"19465479\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"Daxx controls epigenetic silencing of RelB target genes (dapk1, dapk3, c-flip, birc3) by recruiting DNA methyltransferase 1 (Dnmt1) to target gene promoters in a RelB-dependent manner, resulting in promoter DNA methylation. daxx-/- cells show decreased methylation of target promoters, and restoration of Daxx in daxx-/- cells restores DNA methylation.\",\n      \"method\": \"ChIP, daxx-/- and relB-/- cell lines, mRNA/protein level analysis, DNA methylation assays, stable transfection rescue\",\n      \"journal\": \"Genes & development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic KO rescue, ChIP for Dnmt1 recruitment, DNA methylation quantification, multiple genetic controls\",\n      \"pmids\": [\"18413714\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"Daxx contains two functional nuclear localization signals (NLS1: RLKRK at residues 227-231; NLS2: KKSRKEKK at residues 630-637) and interacts selectively with importin alpha3 through both NLS sequences. NLS2 plays the major role; disrupting both NLS1 and NLS2 is required to completely block nuclear localization and PML body association. Nuclear localization of Daxx is essential for its transcriptional effects on GR and p53.\",\n      \"method\": \"Site-directed mutagenesis, domain analysis, co-immunoprecipitation with importin alpha3, immunofluorescence, transcriptional reporter assays\",\n      \"journal\": \"Journal of cellular biochemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — mutagenesis maps NLS residues, importin co-IP, functional transcriptional readout, multiple NLS mutants tested\",\n      \"pmids\": [\"17661348\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"In response to DNA damage, Daxx localized in PML-NBs undergoes ubiquitination and degradation. RASSF1C, a newly identified Daxx binding partner, is constitutively anchored by Daxx in PML-NBs but is released and translocates to cytoplasmic microtubules when Daxx is degraded, where it participates in SAPK/JNK activation, coupling nuclear DNA damage to cytoplasmic SAPK/JNK signaling.\",\n      \"method\": \"Co-immunoprecipitation, immunofluorescence, ubiquitination assays, DNA damage (UV/chemicals), JNK activation assays\",\n      \"journal\": \"The EMBO journal\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP interaction, mechanistic pathway (ubiquitination → Daxx degradation → RASSF1C release → JNK), multiple readouts, single lab\",\n      \"pmids\": [\"16810318\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"Daxx interacts with STAT3 and functions as a transcriptional co-repressor suppressing IL-6/STAT3-mediated transcription. Type I IFN-induced Daxx suppresses STAT3-mediated transcriptional activation; siRNA-mediated reduction of Daxx enhances IL-6/LIF-induced STAT3-dependent transcription. Daxx and STAT3 co-localize in the nucleus.\",\n      \"method\": \"Co-immunoprecipitation, siRNA knockdown, immunofluorescence, transcriptional reporter assays\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — co-IP interaction, siRNA functional assays, co-localization; single lab\",\n      \"pmids\": [\"16331268\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"HCMV pp71 promotes SUMOylation of its cellular substrate Daxx. Daxx is a transcriptional co-repressor that silences viral immediate-early (IE) genes. At the start of lytic infections, pp71 travels to the nucleus, displaces ATRX from Daxx, and mediates Daxx degradation through a ubiquitin-independent, proteasome-dependent process.\",\n      \"method\": \"SUMOylation assays, co-immunoprecipitation, proteasome inhibitor experiments, viral IE gene expression assays\",\n      \"journal\": \"Journal of virology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — biochemical SUMOylation assay, mechanistic degradation pathway established, single lab\",\n      \"pmids\": [\"19369322\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"DAXX's SUMO-interacting motif (SIM) at residues 732-740 is phosphorylated by CK2 kinase at Ser737 and Ser739. Phosphorylation promotes preferential DAXX-SIM binding to SUMO-1 over SUMO-2/3 (paralog-selective). NMR structural studies show the Daxx-SIM binds SUMO-1 in a parallel orientation. SIM phosphorylation causes Daxx preference for SUMO-1 conjugation/interaction and enhances Daxx-mediated antiapoptotic gene repression under stress.\",\n      \"method\": \"NMR spectroscopy (structural), CK2 kinase assay, phospho-site mutagenesis, SUMO binding assays, apoptosis reporter assays\",\n      \"journal\": \"Molecular cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — NMR structure of SIM:SUMO-1 complex, kinase identified (CK2), phospho-mutant functional assays, single lab but multiple rigorous orthogonal methods\",\n      \"pmids\": [\"21474068\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"The N-terminal SIM (SIM-N) and C-terminal SIM (SIM-C) of DAXX have distinct SUMO-binding properties characterized by NMR: SIM-N binds SUMO-1 predominantly in a parallel orientation with ~4-fold lower KD than SIM-C; SIM-C interconverts between parallel and antiparallel binding modes. Within native context, SIM-N binds intramolecularly to the adjacent N-terminal helical bundle domain, reducing its apparent affinity for SUMO (putative autoregulatory mechanism). SIM-C interaction with sumoylated Ets1 is SUMO-mediated (no direct Daxx-Ets1 contact).\",\n      \"method\": \"NMR spectroscopy, binding affinity measurements, intramolecular binding assays\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — high-resolution NMR characterization with quantitative binding data and mechanistic insight into autoregulation; single lab\",\n      \"pmids\": [\"21383010\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"Daxx mediates activation-induced cell death (AICD) in microglia by triggering MST1 signaling. IFN-γ upregulates Daxx expression, which mediates MST1 homodimerization, activation, and nuclear translocation, leading to apoptosis. Depletion of Daxx or MST1 by RNAi attenuates IFN-γ-induced microglial cell death; MST1-null mice show significantly reduced IFN-γ-induced microglial death in vivo.\",\n      \"method\": \"RNAi knockdown, immunofluorescence, apoptosis assays, MST1-null mouse model\",\n      \"journal\": \"The EMBO journal\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — RNAi in primary cells and in vivo mouse model, mechanistic pathway (Daxx→MST1 dimerization/activation), multiple orthogonal approaches\",\n      \"pmids\": [\"21572393\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"Under heat shock, Daxx robustly and reversibly accumulates at centromeric/pericentromeric (CEN/periCEN) heterochromatin from its resting localization in PML NBs. Daxx depletion reduces CEN RNA accumulation under normal conditions and periCEN RNA after heat shock. Daxx depletion also decreases incorporation of the transcription-associated histone variant H3.3 into CEN and periCEN, and perturbs epigenetic modifications (elevating H3K4Me2 at periCEN under heat shock).\",\n      \"method\": \"Immunofluorescence (live-cell localization), FRAP, ChIP for H3.3 and histone modifications, RNA analysis after Daxx depletion, heat shock paradigm\",\n      \"journal\": \"Nucleus (Austin, Tex.)\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — localization experiments with functional consequences (H3.3 incorporation, heterochromatin transcription), single lab\",\n      \"pmids\": [\"22572957\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"Daxx and ATRX are required to maintain a repressed chromatin environment at a CMV-promoter-regulated transgene array. In ICP0-expressing HeLa cells, ATRX and Daxx are depleted from the array concomitant with transcriptional activation. Histone H3.3 is recruited to but not incorporated into chromatin at the activated array, suggesting Daxx/ATRX are required for both transcriptional repression and H3.3 chromatin assembly at this locus. ATRX-negative U2OS cells show robust activation of the array.\",\n      \"method\": \"Single-cell live imaging with inducible transgene array, immunofluorescence, siRNA depletion, ATRX-negative cell line comparison\",\n      \"journal\": \"Journal of cell science\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — single-cell imaging with functional readouts, genetic comparison (ATRX-KO), ICP0 as experimental tool; single lab\",\n      \"pmids\": [\"22976303\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Upon DNA damage, Daxx is phosphorylated at Ser564 in an ATM-dependent manner. This phosphorylation disrupts the Daxx-Mdm2 interaction, facilitating Mdm2 self-degradation and p53 activation. Blocking Ser564 phosphorylation (non-phosphorylatable mutant) prevents Daxx-Mdm2 dissociation, stabilizes Mdm2, and inhibits DNA damage-induced p53 activation.\",\n      \"method\": \"Phospho-specific antibodies, ATM inhibitor/KO experiments, Ser564 mutagenesis, Daxx-Mdm2 co-IP after DNA damage, p53 activation assays\",\n      \"journal\": \"PloS one\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ATM-dependence established pharmacologically and genetically, site-directed mutagenesis at Ser564, functional Mdm2/p53 consequences; single lab but multiple approaches; consistent with earlier work (PMID 16845383)\",\n      \"pmids\": [\"23405218\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"USP7 interacts with Daxx and cooperates in regulating mitosis and taxane resistance. USP7 depletion impairs mitotic progression, stabilizes cyclin B, reduces CHFR E3 ubiquitin ligase stability, and consequently accumulates Aurora-A kinase (a CHFR substrate), leading to multipolar mitoses. These effects are independent of p53.\",\n      \"method\": \"Co-immunoprecipitation, siRNA depletion, cell cycle analysis, cyclin B/Aurora-A stability assays, colony formation assays\",\n      \"journal\": \"Cell death and differentiation\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP interaction, functional depletion with mechanistic pathway (USP7→CHFR stability→Aurora-A), p53-independence established; single lab\",\n      \"pmids\": [\"23348568\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Daxx and Rassf1 interact and co-localize during mitosis. Daxx depletion or expression of the Daxx-binding domain of Rassf1 elevates cyclin B stability and increases taxol resistance. Daxx and Rassf1 define a mitotic stress checkpoint enabling cells to exit mitosis as micronucleated cells when encountering mitotic stress (including taxol).\",\n      \"method\": \"Co-immunoprecipitation, immunofluorescence during mitosis, siRNA depletion, cyclin B stability assays, mouse xenograft models\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP, in vivo xenograft, mechanistic pathway; single lab\",\n      \"pmids\": [\"21643015\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"Daxx depletion increases DNA methylation levels at the RASSF1A promoter are critically controlled by DAXX: DAXX overexpression leads to enhanced RASSF1A promoter methylation whereas DAXX inhibition reduces it. p53 recruits DAXX and DNMT1 to the RASSF1A promoter for methylation-mediated silencing. DAXX-mediated RASSF1A methylation also regulates MDM2 protein stability.\",\n      \"method\": \"ChIP, DNA methylation assays, siRNA knockdown, DAXX overexpression, MDM2 stability analysis\",\n      \"journal\": \"FASEB journal\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP, methylation quantitation, functional rescue experiments; single lab\",\n      \"pmids\": [\"23038753\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"The DAXX/ATRX complex is enriched at tandem repetitive elements (retrotransposons and telomeres) in mouse ESCs; global DNA hypomethylation further promotes this recruitment. DAXX/ATRX knockdown in cells with hypomethylated genomes exacerbates aberrant transcriptional de-repression of repeat elements and telomere dysfunction. Mechanistically, DAXX/ATRX-mediated repression involves SUV39H recruitment and H3K9 trimethylation.\",\n      \"method\": \"Genome-wide binding (ChIP-seq), transcriptome analysis (RNA-seq), siRNA knockdown, DNA hypomethylation treatment, H3K9me3 ChIP\",\n      \"journal\": \"Cell stem cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genome-wide ChIP-seq and RNA-seq, genetic KD with functional readouts, mechanistic H3K9me3 ChIP, multiple orthogonal approaches\",\n      \"pmids\": [\"26340527\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"ATM kinase and Wip1 phosphatase are opposing regulators of DAXX phosphorylation at Ser564. ATM-dependent DAXX phosphorylation at S564 (identified by mutagenesis) occurs rapidly during DNA damage response and phosphorylated DAXX localizes to PML nuclear bodies. Wip1 (a p53-regulated phosphatase) dephosphorylates DAXX at S564 both in vitro and in cells. However, DAXX knock-down or TALEN-mediated DAXX deletion did not affect p53-mediated gene expression upon DNA damage.\",\n      \"method\": \"ATM inhibitor, site-directed mutagenesis (S564), in vitro phosphatase assay, immunofluorescence, TALEN-mediated DAXX deletion, RNA-seq/microarray for p53 targets\",\n      \"journal\": \"Cell cycle (Georgetown, Tex.)\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — in vitro phosphatase assay, mutagenesis, genetic deletion (TALEN), functional transcriptional readout (negative for p53 pathway); single lab\",\n      \"pmids\": [\"25659035\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Daxx directly binds to the DNA-binding domain of the transcription factor Slug, impeding HDAC1 recruitment and antagonizing Slug E-box binding. This suppresses Slug-mediated EMT and cell invasiveness. Under hypoxia, HIF-1α downregulates Daxx expression, promoting cancer invasion via the HIF-1α/HDAC1/Slug axis.\",\n      \"method\": \"Co-immunoprecipitation, ChIP, siRNA knockdown, EMT/invasion assays, orthotopic mouse model, re-expression rescue experiments\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — co-IP, ChIP, mechanistic rescue in vivo, multiple functional readouts, clear epistatic pathway\",\n      \"pmids\": [\"28004751\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"X-ray crystal structure of the ATRX-DAXX interaction surface was determined at high resolution. Single amino acid substitutions in DAXX that abrogate ATRX complex formation revealed two biochemically distinct DAXX complexes: (1) the ATRX-DAXX complex (gene repression, telomere chromatin structure) and (2) a DAXX-SETDB1-KAP1-HDAC1 complex that represses endogenous retroviruses independently of ATRX and H3.3 incorporation. Histone H3.3 stabilizes DAXX protein levels and can affect DAXX-regulated gene expression without nucleosomal incorporation.\",\n      \"method\": \"X-ray crystallography, single amino acid mutagenesis, biochemical complex purification, RNA-seq (ERV transcription), ChIP\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — crystal structure, mutagenesis validating function, two distinct complexes biochemically separated, RNA-seq functional readout; multiple rigorous approaches\",\n      \"pmids\": [\"29084956\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"PTEN interacts with DAXX and directly regulates oncogene expression by modulating DAXX-H3.3 association on chromatin, independently of PTEN's enzymatic phosphatase activity. DAXX inhibition specifically suppresses tumor growth in PTEN-deficient glioma models, associated with global H3.3 genomic redistribution.\",\n      \"method\": \"Co-immunoprecipitation (PTEN-DAXX), ChIP for H3.3, DAXX siRNA knockdown in orthotopic glioma mouse models, RNA-seq\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — co-IP, ChIP-seq, in vivo orthotopic model, enzymatic dead PTEN mutant control; multiple orthogonal methods\",\n      \"pmids\": [\"28497778\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"DAXX is targeted for degradation by the CUL3-SPOP E3 ubiquitin ligase complex, where SPOP acts as the substrate adaptor. Knockdown of SPOP or CUL3 leads to DAXX protein upregulation and inversely correlated downregulation of VEGFR2 mRNA. Simultaneous knockdown of SPOP and DAXX reverses VEGFR2 downregulation, establishing DAXX as the mediating substrate.\",\n      \"method\": \"siRNA knockdown, co-immunoprecipitation, VEGFR2 expression analysis\",\n      \"journal\": \"Scientific reports\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — epistasis by double knockdown, co-IP interaction, functional readout; single lab\",\n      \"pmids\": [\"28216678\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"Cytoplasmic DAXX physically interacts with p62/SQSTM1 and drives p62 liquid phase condensation by inducing p62 oligomerization. This promotes p62 recruitment of Keap1 and subsequent Nrf2-mediated stress response. DAXX promotes p62 puncta formation in the cytoplasm.\",\n      \"method\": \"Yeast two-hybrid screen, co-immunoprecipitation, immunofluorescence for puncta/condensates, phase separation assays, Nrf2 reporter assays\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — yeast two-hybrid validated by co-IP, phase condensation mechanism characterized, Nrf2 pathway readout; multiple orthogonal approaches\",\n      \"pmids\": [\"31434890\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"ACETYLATION OF SUMO1 MODULATES DAXX-SIM BINDING: Crystal structures of acetylated SUMO1 variants bound to the phosphorylated SIM of Daxx demonstrate that acetylation at K39, K46, or K37 of SUMO1 reduces or eliminates binding to the Daxx phosphoSIM. Acetylation at K37 specifically impacts binding to Daxx but not PML, demonstrating protein-specific structural plasticity in SUMO-SIM interactions.\",\n      \"method\": \"X-ray crystallography, biochemical binding assays with acetylated SUMO1 variants\",\n      \"journal\": \"Structure (London, England : 1993)\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — crystal structures of SUMO-SIM complexes with PTM variants, quantitative binding data; single lab but rigorous structural methodology\",\n      \"pmids\": [\"31879127\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"ATRX promotes repair of telomeric DSBs by two mechanisms: (1) promoting cohesion of sister telomeres, and (2) a DAXX-dependent pathway. Loss of telomeric cohesion combined with DAXX deficiency recapitulates all telomeric DSB repair phenotypes associated with ATRX loss (ALT-associated PML bodies, T-SCEs, ECTSs). DAXX has an independent role in telomeric DSB repair.\",\n      \"method\": \"ATRX deletion in mouse cells, DAXX knockdown, telomeric DSB induction, T-SCE assays, APB/ECTS quantification, cohesion assays\",\n      \"journal\": \"PLoS biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic deletion, epistasis (ATRX KO + DAXX KD = additive recapitulation of phenotype), multiple orthogonal ALT readouts\",\n      \"pmids\": [\"31895940\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"Daxx loss in the pancreas is well tolerated under normal conditions but creates a permissive transcriptional state (associated with endogenous retroviral element dysregulation) that cooperates with inflammation and Men1 loss to impair pancreas recovery from inflammatory stress. ERV dysregulation by Daxx loss also dysregulates nearby endogenous genes, with corresponding findings in human PanNETs with DAXX mutations.\",\n      \"method\": \"Conditional mouse Daxx knockout, RNA-seq (ERV and gene expression), pancreatitis model, Men1 double-KO\",\n      \"journal\": \"Science advances\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — conditional genetic KO in vivo with defined physiological stressor, RNA-seq, double-KO epistasis, human data correlation\",\n      \"pmids\": [\"32821827\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"Daxx inhibits HIV-1 reverse transcription and uncoating in a SIM (C-terminal SUMO-interacting motif)-dependent manner. Daxx associates with incoming HIV-1 cores through SIM-dependent interaction with cyclophilin A (CypA) and capsid (CA), and resides in a multiprotein complex with TNPO3, TRIM5α, and TRIM34 on viral capsids. Daxx prevents HIV-1 uncoating in a SIM-dependent manner.\",\n      \"method\": \"Quantitative proteomic screen of HIV-1 core-associated proteins, co-immunoprecipitation, SIM deletion mutants, viral uncoating assays, reverse transcription quantification\",\n      \"journal\": \"Viruses\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — quantitative proteomics + co-IP + SIM mutant functional assays + uncoating assays; multiple orthogonal methods in single study\",\n      \"pmids\": [\"32545337\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"DAXX possesses protein-folding activities in an ATP-independent manner via its polyD/E region: DAXX prevents aggregation, solubilizes pre-existing aggregates, and unfolds misfolded species of model substrates and neurodegeneration-associated proteins. DAXX prevents and reverses aggregation of its validated in vivo clients p53 and MDM2, and can restore native conformation and function to tumor-associated, aggregation-prone p53 mutants.\",\n      \"method\": \"In vitro aggregation assays, disaggregation assays, polyD/E deletion mutants, p53/MDM2 client protein functional assays, cell-based assays with p53 mutants\",\n      \"journal\": \"Nature\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — reconstitution in vitro with multiple substrates, mutagenesis of polyD/E domain, in vivo client validation, replicated across multiple model proteins\",\n      \"pmids\": [\"34408321\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"Morc3 interacts with Daxx in a SUMO-dependent manner (Morc3 SUMOylation + Daxx SUMO-binding). In Morc3 knockout cells, histone H3.3 is strongly reduced at Morc3-binding sites (ERV regions), and Morc3 mutants that fail to interact with Daxx also fail to maintain ERV H3.3 deposition, establishing Morc3 as a critical upstream regulator of Daxx-mediated H3.3 incorporation.\",\n      \"method\": \"Co-immunoprecipitation, ChIP for H3.3, ATAC-seq, Morc3 KO cells, Morc3 ATPase and SUMOylation mutants\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic KO, multiple mutants, ChIP-seq, ATAC-seq, mechanistic interaction via SUMO-SIM; multiple orthogonal approaches\",\n      \"pmids\": [\"34650047\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"DAXX and ATRX knockout cells that have acquired ALT-like features show defects in p53 chromatin binding and DNA damage response. ChIP-seq and ATAC-seq revealed genome-wide reduction in p53 DNA-binding and loss of chromatin accessibility at p53 response elements, with depletion of histone H3.3 and accumulation of γH2AX at many p53 sites including subtelomeres.\",\n      \"method\": \"DAXX and ATRX knockout, ChIP-seq (p53, H3.3, γH2AX), ATAC-seq, RNA-seq\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic KO, genome-wide ChIP-seq and ATAC-seq with multiple histone marks, mechanistic link between H3.3 deposition and p53 function\",\n      \"pmids\": [\"36028493\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"SARS-CoV-2 infection triggers DAXX relocalization to cytoplasmic sites and promotes its degradation. Mechanistically, viral papain-like protease (PLpro) and the proteasome mediate DAXX degradation. DAXX restricts an early, post-entry step of the SARS-CoV-2 life cycle through its D/E domain (also necessary for protein-folding activity), independently of the SUMOylation pathway.\",\n      \"method\": \"CRISPR/Cas9 screen, PLpro expression studies, proteasome inhibitor experiments, DAXX domain mutants, viral replication assays\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — CRISPR screen identification, mechanistic validation with PLpro and proteasome inhibitors, domain mutant mapping, multiple orthogonal methods\",\n      \"pmids\": [\"35508460\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"DAXX recruits histone methyltransferases to promote H3K9me3 catalysis on new histone H3.3-H4 prior to DNA deposition, providing a de novo H3K9me3 deposition mechanism and a molecular basis for heterochromatin assembly. Exploratory interactomics defined previously uncharacterized histone-dependent complexes in the histone chaperone network.\",\n      \"method\": \"Exploratory interactomics (quantitative proteomics), H3K9 methylation assays, ChIP for H3K9me3, reconstitution experiments\",\n      \"journal\": \"Molecular cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Moderate — interactomics, reconstitution-type methylation assays, ChIP validation; single study but multiple orthogonal approaches\",\n      \"pmids\": [\"36868228\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"DAXX interacts with SREBP1 and SREBP2 and activates SREBP-mediated lipogenic gene transcription. DAXX associates with lipogenic gene promoters through SREBPs (ChIP). DAXX's SUMO-binding activity (via C-terminal SIM2) is critical for SREBP1/2 activation and lipogenesis; a DAXX SIM2 mutant fails to bind SREBP1/2, has weakened chromatin recruitment, and is defective in promoting lipogenesis and tumor growth. A cell-membrane permeable SIM2 peptide disrupts DAXX-SREBP1/2 interactions and inhibits lipogenesis.\",\n      \"method\": \"Co-immunoprecipitation, ChIP, siRNA knockdown, DAXX SIM mutants, lipidomic analysis, tumor xenograft models, cell-penetrating peptide assay\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — co-IP interaction, ChIP, mutagenesis (SIM2), lipidomics, in vivo xenograft, peptide inhibitor validation; multiple orthogonal methods\",\n      \"pmids\": [\"37045819\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"DAXX promotes genome stability at centromeres independently of ATRX by preventing R-loop accumulation and DNA double-strand break (DSB) formation. This ATRX-independent function requires DAXX's interaction with histone H3.3 but is independent of H3.3 deposition into nucleosomes and does not reflect centromeric transcription repression. DAXX depletion mobilizes BRCA1 at centromeres, consistent with BRCA1's role in counteracting R-loops.\",\n      \"method\": \"DAXX depletion (siRNA/KO) in glioma and pNET cell lines, R-loop detection (S9.6 immunofluorescence/DRIP-seq), γH2AX quantification at centromeres, H3.3 interaction mutants, BRCA1 localization\",\n      \"journal\": \"Nucleic acids research\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — DRIP-seq and immunofluorescence for R-loops, γH2AX assays, H3.3 interaction mutants, BRCA1 epistasis; multiple orthogonal methods\",\n      \"pmids\": [\"38038252\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"EBV major tegument protein BNRF1 interacts with Daxx at PML nuclear bodies and disrupts the Daxx-ATRX chromatin remodeling complex. Knockdown of Daxx and ATRX induces reactivation of EBV from latently infected lymphoblastoid cell lines, indicating Daxx and ATRX maintain viral chromatin in a repressed state.\",\n      \"method\": \"Co-immunoprecipitation (BNRF1-Daxx), siRNA knockdown, EBV reactivation assays, domain mapping\",\n      \"journal\": \"PLoS pathogens\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP interaction mapping, genetic KD epistasis showing Daxx/ATRX suppress EBV reactivation, multiple functional assays\",\n      \"pmids\": [\"22102817\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"Human Daxx protein levels are increased in response to retroviral (ASV) infection. Daxx is physically associated with both viral DNA and DNA methyltransferases (DNMTs) and is required for long-term viral silencing maintenance and full viral DNA methylation, including initiation of epigenetic repression (repressive histone marks detectable within 12h, LTR DNA methylation within 3 days post-infection).\",\n      \"method\": \"ChIP for Daxx on viral DNA, co-immunoprecipitation with DNMTs, bisulfite methylation assays, Daxx-null cell comparison, time-course analysis\",\n      \"journal\": \"Journal of virology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — ChIP on viral DNA, co-IP with DNMTs, genetic null comparison, time-course mechanistic data; multiple orthogonal methods\",\n      \"pmids\": [\"23221555\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"During myogenic differentiation, PML NB loss triggers DAXX relocalization from PML NBs to chromocentres. MyoD expression is sufficient to cause PML NB loss. PML silencing induces DAXX relocalization. The C-terminal SUMO-interacting motif of DAXX is required for its co-localization with ATRX in heterochromatin domains during myotube formation.\",\n      \"method\": \"Immunofluorescence, siRNA knockdown of PML, MyoD overexpression, DAXX SIM-C deletion mutants, live imaging\",\n      \"journal\": \"Cell death & disease\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — localization experiments tied to mechanistic triggers (MyoD, PML KD) and SUMO-SIM requirement demonstrated; single lab\",\n      \"pmids\": [\"28358373\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2002,\n      \"finding\": \"HCMV tegument protein pp71 specifically interacts with human Daxx (hDaxx) in a yeast two-hybrid screen and in co-transfection experiments. Co-transfection of hDaxx enhances pp71 recruitment to ND10/PML nuclear bodies. pp71-mediated transactivation of the HCMV major immediate-early enhancer-promoter is synergistically enhanced in the presence of hDaxx.\",\n      \"method\": \"Yeast two-hybrid, co-immunoprecipitation, immunofluorescence co-localization, transactivation assays\",\n      \"journal\": \"Journal of virology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — co-localization, co-IP, functional transactivation assay, single lab\",\n      \"pmids\": [\"11992005\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"DAXX is a multifunctional scaffold/chaperone protein that operates through several mechanistically distinct activities: (1) it is a dedicated histone H3.3 chaperone that, in complex with ATRX, deposits H3.3 at heterochromatic regions (telomeres, pericentromeres, and repetitive elements) to maintain chromatin integrity, and independently recruits histone methyltransferases to catalyze de novo H3K9me3 on new H3.3-H4 prior to DNA deposition; (2) it functions as a transcriptional co-repressor by binding sumoylated transcription factors (via its SUMO-interacting motifs, regulated by CK2 phosphorylation), recruiting HDAC1 and DNMTs to silence target genes; (3) it modulates apoptosis by binding the Fas death domain and activating the ASK1-JNK pathway, while in the nucleus sequestering pro-apoptotic signals and acting anti-apoptotically; (4) it stabilizes MDM2 by bridging MDM2 to the deubiquitinase Hausp/USP7, a function disrupted by ATM-dependent phosphorylation at Ser564 upon DNA damage to activate p53; (5) it acts as an ATP-independent molecular chaperone/disaggregase through its polyD/E region, resolving misfolded proteins including p53 and MDM2; (6) it restricts diverse viruses (herpesviruses, retroviruses, SARS-CoV-2, HIV-1) via chromatin-based silencing of viral DNA and SIM-dependent interactions with incoming viral capsids; and (7) its subcellular localization—primarily PML nuclear bodies in steady state, with regulated redistribution to cytoplasm, centromeres, or chromatin—is controlled by phosphorylation (ATM, CK2, HIPK1), sumoylation, interactions with DJ-1 and PML, and import via importin alpha3.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"DAXX is a multifunctional nuclear scaffold and ATP-independent molecular chaperone that links chromatin assembly, transcriptional repression, and stress/apoptotic signaling, operating predominantly from PML nuclear bodies under steady state [#3, #48]. As a dedicated histone H3.3 chaperone it partners with ATRX to deposit H3.3 and maintain a repressed, H3K9me3-marked chromatin state at telomeres, pericentromeres, and tandem repetitive/retrotransposon elements, recruiting SUV39H to catalyze H3K9 trimethylation and methyltransferases that mark new H3.3-H4 prior to DNA deposition [#37, #52]. Structural and biochemical dissection resolves DAXX into mechanistically distinct complexes: an ATRX-DAXX complex governing telomeric chromatin and an ATRX-independent DAXX-SETDB1-KAP1-HDAC1 complex silencing endogenous retroviruses, with H3.3 binding itself stabilizing DAXX protein [#40]. DAXX additionally guards genome stability at centromeres in an ATRX-independent, H3.3-deposition-independent manner by preventing R-loop accumulation and double-strand breaks, and its loss compromises p53 chromatin binding genome-wide [#54, #50]. As a transcriptional co-repressor it binds sumoylated factors through phosphorylation-regulated SUMO-interacting motifs and recruits HDAC1 and DNMT1 to silence targets, a logic exemplified by SUMO-dependent repression of Smad4 and RelB-directed DNMT1 recruitment to NF-\\u03baB target promoters [#13, #23, #28]. DAXX stabilizes MDM2 by bridging it to the deubiquitinase USP7/Hausp and is released upon ATM-dependent Ser564 phosphorylation during DNA damage to permit MDM2 self-degradation and p53 activation [#16, #33]. In its chaperone capacity DAXX uses a polyD/E region to prevent and reverse aggregation of clients including p53 and MDM2 [#48]. DAXX governs apoptosis bidirectionally\\u2014binding the Fas death domain and activating the ASK1-JNK pathway in the cytoplasm while acting anti-apoptotically in the nucleus, with the balance set by its regulated localization [#0, #1, #7]. DAXX broadly restricts viruses, silencing retroviral and herpesviral DNA via HDAC/DNMT recruitment and blocking incoming HIV-1 cores and an early SARS-CoV-2 step through SIM- and D/E-domain-dependent mechanisms [#14, #56, #47, #51]. Its localization and activity are controlled by phosphorylation (ATM, CK2, HIPK1), sumoylation, and partners including PML, DJ-1, and importin alpha3 [#3, #10, #12, #24, #28].\",\n  \"teleology\": [\n    {\n      \"year\": 1998,\n      \"claim\": \"Establishing how Fas engagement is transduced, DAXX was shown to bind the Fas death domain and to activate the JNK pathway through ASK1, defining a FADD-independent apoptotic branch.\",\n      \"evidence\": \"Yeast two-hybrid, co-IP with dominant-negative and kinase-dead ASK1 mutants, apoptosis assays\",\n      \"pmids\": [\"9215629\", \"9743501\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Did not resolve the nuclear functions of DAXX\", \"Physiological relevance of overexpression-based pro-apoptotic activity unaddressed\"]\n    },\n    {\n      \"year\": 1999,\n      \"claim\": \"Genetic knockout in mice unexpectedly showed DAXX is required to suppress apoptosis in the embryo, reframing it as anti-apoptotic in vivo and exposing a paradox with its overexpression phenotype.\",\n      \"evidence\": \"Targeted gene deletion in mice with embryonic phenotyping\",\n      \"pmids\": [\"10444590\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Molecular basis of the anti-apoptotic requirement not defined\", \"Did not distinguish nuclear vs cytoplasmic contributions\"]\n    },\n    {\n      \"year\": 2003,\n      \"claim\": \"Endogenous depletion studies reconciled the paradox by showing DAXX is anti-apoptotic and a transcriptional repressor of NF-\\u03baB/E2F1 targets, while also being required for stress-induced JNK death in primary cells.\",\n      \"evidence\": \"RNAi/siRNA knockdown with Bcl-2 rescue, transcriptional target analysis, UV/oxidative stress and PML co-silencing epistasis\",\n      \"pmids\": [\"12482920\", \"14517282\", \"15861194\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct transcriptional target promoters not all mapped\", \"Switch between pro- and anti-apoptotic states not mechanistically defined\"]\n    },\n    {\n      \"year\": 2003,\n      \"claim\": \"DAXX localization emerged as the control point for its dual function: PML, HIPK1, ASK1, and DJ-1 partition DAXX between PML bodies, chromatin, and cytoplasm, gating repressor versus apoptotic activity.\",\n      \"evidence\": \"Co-IP, immunofluorescence, kinase/phospho-site mutagenesis (HIPK1 Ser669), PML-KO and DJ-1 mutant epistasis\",\n      \"pmids\": [\"10684855\", \"12529400\", \"11495919\", \"15983381\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Quantitative thresholds governing redistribution unclear\", \"Integration of multiple localization inputs not unified\"]\n    },\n    {\n      \"year\": 2005,\n      \"claim\": \"DAXX was defined as a SUMO-dependent co-repressor that reads sumoylated transcription factors and recruits HDAC/DNMT machinery, providing the molecular logic for gene silencing.\",\n      \"evidence\": \"ChIP, SUMO-site mutagenesis (Smad4 K159), in vitro binding, RNAi rescue; DMAP1/DNMT1 complex co-IP\",\n      \"pmids\": [\"15637079\", \"14978102\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Generality across SUMO substrates not established at this stage\", \"Direct DAXX SIM determinants not yet mapped\"]\n    },\n    {\n      \"year\": 2006,\n      \"claim\": \"DAXX was shown to control the p53/MDM2 axis by bridging MDM2 to the deubiquitinase USP7/Hausp to stabilize MDM2, then releasing MDM2 upon DNA damage to activate p53.\",\n      \"evidence\": \"Co-IP, siRNA knockdown, MDM2 stability and ubiquitination assays, DNA damage dissociation\",\n      \"pmids\": [\"16845383\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Damage signal driving dissociation not yet identified\", \"Whether DAXX directly modifies MDM2 unresolved\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"DAXX was placed at the apex of epigenetic gene silencing by recruiting DNMT1 to RelB target promoters and methylating their DNA, linking transcriptional repression to heritable promoter methylation.\",\n      \"evidence\": \"ChIP for Dnmt1, daxx-/- and relB-/- cell lines, DNA methylation assays, rescue by Daxx restoration\",\n      \"pmids\": [\"18413714\", \"16982744\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Mechanism of DNMT1 recruitment specificity unclear\", \"Scope of methylation targets beyond RelB genes undefined\"]\n    },\n    {\n      \"year\": 2011,\n      \"claim\": \"Structural and kinase studies dissected the DAXX SUMO-interacting motifs, showing CK2 phosphorylation tunes SUMO-1 paralog selectivity and an intramolecular SIM-N autoregulatory mechanism, providing the biophysical basis for SUMO-dependent recruitment.\",\n      \"evidence\": \"NMR structures of SIM:SUMO complexes, CK2 kinase and phospho-site mutagenesis, binding affinity measurements, apoptosis reporters\",\n      \"pmids\": [\"21474068\", \"21383010\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"In vivo impact of paralog selectivity on specific targets not fully mapped\", \"Coordination of two SIMs in native complexes unclear\"]\n    },\n    {\n      \"year\": 2012,\n      \"claim\": \"DAXX was established as an H3.3 chaperone acting with ATRX to deposit H3.3 and maintain repressed chromatin at centromeric/pericentromeric and transgene loci, redirecting its function toward heterochromatin maintenance.\",\n      \"evidence\": \"Live-cell imaging, FRAP, ChIP for H3.3 and histone marks under heat shock, ATRX-negative cell comparison, ICP0-induced activation\",\n      \"pmids\": [\"22572957\", \"22976303\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether repression and H3.3 deposition are separable not yet resolved\", \"Single-locus models may not generalize genome-wide\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"The damage signal releasing DAXX from MDM2 was identified as ATM-dependent Ser564 phosphorylation, closing the loop on how DNA damage converts DAXX from an MDM2 stabilizer to a p53 activator.\",\n      \"evidence\": \"Phospho-specific antibodies, ATM inhibitor/KO, Ser564 mutagenesis, Daxx-Mdm2 co-IP after damage\",\n      \"pmids\": [\"23405218\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Reconciliation with later reports of no p53 transcriptional effect needed\", \"Phosphatase counter-regulation not addressed here\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Genome-wide profiling demonstrated DAXX/ATRX targets repetitive elements and telomeres, with SUV39H-dependent H3K9me3 enforcing repression, defining the mechanism of heterochromatin-based repeat silencing.\",\n      \"evidence\": \"ChIP-seq, RNA-seq, siRNA knockdown, DNA hypomethylation treatment, H3K9me3 ChIP\",\n      \"pmids\": [\"26340527\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Order of H3.3 deposition versus H3K9me3 not yet established\", \"Upstream recruitment factors for repeat targeting unclear\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Crystallography of the ATRX-DAXX interface and complex purification resolved DAXX into two distinct repressive assemblies\\u2014ATRX-DAXX for telomeres and DAXX-SETDB1-KAP1-HDAC1 for ERVs\\u2014and showed H3.3 binding stabilizes DAXX even without nucleosomal incorporation.\",\n      \"evidence\": \"X-ray crystallography, single-residue mutagenesis, biochemical complex purification, RNA-seq, ChIP; PTEN-DAXX co-IP and H3.3 ChIP\",\n      \"pmids\": [\"29084956\", \"28497778\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How DAXX is partitioned between the two complexes in cells unclear\", \"Non-nucleosomal H3.3 functions incompletely defined\"]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"DAXX was shown to be an ATP-independent chaperone/disaggregase via its polyD/E region, unifying its scaffolding roles with direct protein quality control of clients p53 and MDM2.\",\n      \"evidence\": \"In vitro aggregation/disaggregation assays, polyD/E deletion mutants, p53/MDM2 client and tumor-mutant functional assays; Morc3 SUMO-dependent upstream recruitment\",\n      \"pmids\": [\"34408321\", \"34650047\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Full client repertoire in vivo unknown\", \"Relationship between chaperone and chromatin functions not integrated\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"DAXX/ATRX loss was shown to impair p53 chromatin binding and DNA damage response genome-wide via H3.3 depletion, connecting DAXX's chromatin chaperone role to tumor-suppressor function.\",\n      \"evidence\": \"DAXX/ATRX knockout, ChIP-seq (p53, H3.3, \\u03b3H2AX), ATAC-seq, RNA-seq\",\n      \"pmids\": [\"36028493\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Causal sequence between H3.3 loss and p53 binding defect not fully resolved\", \"ALT acquisition as confounder\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"DAXX was established as a broad antiviral restriction factor that silences viral DNA (retroviruses, herpesviruses) and blocks early steps of HIV-1 and SARS-CoV-2 through SIM- and D/E-domain-dependent mechanisms, with viruses encoding countermeasures to degrade it.\",\n      \"evidence\": \"ChIP on viral DNA, co-IP with DNMTs/capsid factors, SIM and D/E domain mutants, CRISPR screen, proteasome and PLpro/pp71/BNRF1 degradation studies\",\n      \"pmids\": [\"23221555\", \"32545337\", \"35508460\", \"22102817\", \"19369322\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether one DAXX activity underlies all antiviral effects unclear\", \"Capsid-binding mechanism not structurally defined\"]\n    },\n    {\n      \"year\": 2024,\n      \"claim\": \"DAXX was found to protect centromere genome stability by preventing R-loop accumulation and DSBs in an ATRX- and H3.3-deposition-independent but H3.3-binding-dependent manner, separating a chromatin-protective role from transcriptional silencing.\",\n      \"evidence\": \"DAXX depletion in glioma/pNET lines, DRIP-seq and S9.6 immunofluorescence, \\u03b3H2AX assays, H3.3 interaction mutants, BRCA1 localization\",\n      \"pmids\": [\"38038252\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How H3.3-bound DAXX suppresses R-loops mechanistically unclear\", \"Relationship to BRCA1 recruitment not fully defined\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How DAXX's multiple modular activities\\u2014H3.3 chaperone/disaggregase, SUMO-dependent co-repressor, MDM2/p53 regulator, and antiviral restriction\\u2014are coordinately partitioned and prioritized within a single cell under given signals remains unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"High\",\n      \"gaps\": [\"No unified model linking localization control to selection among competing activities\", \"Quantitative stoichiometry of distinct DAXX complexes in vivo unknown\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0042393\", \"supporting_discovery_ids\": [37, 40, 52, 54]},\n      {\"term_id\": \"GO:0044183\", \"supporting_discovery_ids\": [48]},\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [4, 13, 23, 39, 53]},\n      {\"term_id\": \"GO:0060090\", \"supporting_discovery_ids\": [16, 49, 43]},\n      {\"term_id\": \"GO:0098772\", \"supporting_discovery_ids\": [16, 1]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [3, 24, 8]},\n      {\"term_id\": \"GO:0005829\", \"supporting_discovery_ids\": [7, 43, 51]},\n      {\"term_id\": \"GO:0000228\", \"supporting_discovery_ids\": [31, 37, 54]},\n      {\"term_id\": \"GO:0005730\", \"supporting_discovery_ids\": [21]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-4839726\", \"supporting_discovery_ids\": [37, 40, 52]},\n      {\"term_id\": \"R-HSA-74160\", \"supporting_discovery_ids\": [13, 23, 39, 53]},\n      {\"term_id\": \"R-HSA-5357801\", \"supporting_discovery_ids\": [0, 1, 9]},\n      {\"term_id\": \"R-HSA-168256\", \"supporting_discovery_ids\": [14, 56, 47, 51]},\n      {\"term_id\": \"R-HSA-73894\", \"supporting_discovery_ids\": [50, 54, 45]},\n      {\"term_id\": \"R-HSA-392499\", \"supporting_discovery_ids\": [48, 16]}\n    ],\n    \"complexes\": [\n      \"ATRX-DAXX complex\",\n      \"DAXX-SETDB1-KAP1-HDAC1 complex\",\n      \"DAXX-DMAP1-DNMT1 complex\",\n      \"PML nuclear bodies\"\n    ],\n    \"partners\": [\n      \"ATRX\",\n      \"PML\",\n      \"MDM2\",\n      \"USP7\",\n      \"ASK1\",\n      \"HDAC1\",\n      \"DNMT1\",\n      \"DJ-1\"\n    ],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":10,"faith_total":10,"faith_pct":100.0}}