{"gene":"ATRX","run_date":"2026-06-09T22:02:44","timeline":{"discoveries":[{"year":1998,"finding":"The XNP/ATRX protein interacts specifically with the SET domain of human EZH2, as demonstrated by yeast two-hybrid analysis, suggesting ATRX regulates gene transcription through chromatin remodeling in association with PRC2 components.","method":"Yeast two-hybrid assay","journal":"Human molecular genetics","confidence":"Low","confidence_rationale":"Tier 3 / Weak — single yeast two-hybrid assay, single lab, no biochemical validation of direct interaction","pmids":["9499421"],"is_preprint":false},{"year":2000,"finding":"The zinc finger domain of XNP/ATRX mediates double-stranded DNA binding in vitro, and disease-causing mutations in this domain severely reduce DNA binding capacity; additionally, ATR-X patient cells show altered or absent XNP/ATRX protein expression and impaired nuclear localization.","method":"In vitro DNA binding assays, immunocytochemistry, western blot with patient-derived cells and monoclonal antibodies","journal":"Journal of medical genetics","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — multiple orthogonal methods (in vitro binding, immunocytochemistry, western blot), single lab","pmids":["11015451"],"is_preprint":false},{"year":2008,"finding":"ATRX is required for normal mitotic progression in human cultured cells and mouse neuroprogenitors; loss of ATRX causes defective sister chromatid cohesion and chromosome congression at the metaphase plate, as shown by live cell imaging and analysis of embryonic mouse brain neuroprogenitors.","method":"Live cell imaging, RNAi-mediated depletion, mouse genetic model, immunofluorescence","journal":"The Journal of cell biology","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple orthogonal methods (live imaging, in vivo mouse model, RNAi), replicated in both human cells and mouse brain","pmids":["18227278"],"is_preprint":false},{"year":2009,"finding":"Drosophila XNP (ATRX ortholog) localizes to active genes and a decondensed satellite DNA focus near heterochromatin on the X chromosome, corresponding to sites of ongoing nucleosome replacement; XNP modulates nucleosome dynamics at these sites to limit chromatin accessibility and contributes to heterochromatic gene silencing.","method":"Immunolocalization, position-effect variegation assays, overexpression in Drosophila","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — genetic and localization studies in Drosophila, multiple methods, single lab","pmids":["19706533"],"is_preprint":false},{"year":2010,"finding":"Drosophila ATRX forms a complex with HP1a; the ATRX185 isoform but not ATRX125 is concentrated in pericentric beta-heterochromatin of the X chromosome, HP1a strongly stimulates ATRX185 biochemical activities in vitro, and ATRX185 is required for HP1a deposition in pericentric heterochromatin. Loss-of-function ATRX alleles suppress position effect variegation.","method":"Biochemical fractionation, co-immunoprecipitation, in vitro ATPase assay, immunolocalization, Drosophila genetics (PEV suppression)","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple orthogonal methods (biochemical, genetic, localization) in single study, functional consequence established","pmids":["20154359"],"is_preprint":false},{"year":2011,"finding":"C. elegans xnp-1 (ATRX ortholog) functions together with lin-35/Rb, hpl-2/HP1, and the NuRD complex during development; double mutants show larval arrest with cessation of growth; xnp-1 and lin-35 jointly control transgene silencing via chromatin remodeling.","method":"C. elegans genetic epistasis, RNAi, transgene silencing assay","journal":"Developmental biology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — genetic epistasis with multiple partners, functional phenotypic readouts, single lab","pmids":["15649460"],"is_preprint":false},{"year":2012,"finding":"ATRX and DAXX are required for transcriptional repression and chromatin assembly at a CMV-promoter transgene array; the array is refractory to activation in ATRX/DAXX-expressing cells but can be robustly activated in ATRX-negative U2OS cells. HSV-1 ICP0 depletes ATRX and DAXX from the array upon activation, and histone H3.3 is recruited but not incorporated into chromatin during activation, indicating ATRX/DAXX maintain a repressed chromatin environment through H3.3 deposition.","method":"Single-cell live imaging, inducible transgene array, ATRX-negative cell line comparison, ICP0 expression, histone H3.3 recruitment assay","journal":"Journal of cell science","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — multiple cell-based approaches, functional readout, single lab","pmids":["22976303"],"is_preprint":false},{"year":2014,"finding":"ATRX functions as a high-affinity RNA-binding protein that directly interacts with RepA/Xist RNA to promote loading of PRC2 in vivo. Without ATRX, PRC2 cannot load onto Xist RNA or spread in cis along the X chromosome. Genome-wide, loss of ATRX leads to spatial redistribution of PRC2 and derepression of Polycomb-responsive genes.","method":"Unbiased proteomics (mass spectrometry), RNA immunoprecipitation, ChIP-seq, epigenomic profiling, ATRX knockout/knockdown","journal":"Cell","confidence":"High","confidence_rationale":"Tier 1–2 / Strong — multiple orthogonal methods (proteomics, RIP, ChIP-seq, KO) in a single rigorous study establishing direct RNA-binding and PRC2 loading function","pmids":["25417162"],"is_preprint":false},{"year":2015,"finding":"Transient ATRX expression in ALT-positive/ATRX-negative cells directly represses ALT activity, providing functional evidence that ATRX represses the ALT mechanism. ATRX loss alone in mortal or telomerase-positive cells is insufficient to activate ALT; it requires cooperation with additional genetic/epigenetic alterations.","method":"ATRX knockout/knockdown, transient ATRX re-expression in ALT-positive cells, ALT assays (C-circle, APB formation)","journal":"Oncotarget","confidence":"High","confidence_rationale":"Tier 2 / Strong — rescue experiment (re-expression represses ALT) combined with loss-of-function studies, multiple cell line models","pmids":["26001292"],"is_preprint":false},{"year":2016,"finding":"ATRX deficiency impairs nonhomologous end joining (NHEJ) DNA repair in glioma cells and increases sensitivity to DNA-damaging agents that induce double-strand breaks, establishing a role for ATRX in NHEJ.","method":"ATRX-deficient mouse glioma model, NHEJ repair assays, DNA damage sensitivity assays","journal":"Science translational medicine","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — animal model and functional repair assays, single lab","pmids":["26936505"],"is_preprint":false},{"year":2017,"finding":"TERRA RNA competes with telomeric DNA for ATRX binding, suppresses ATRX localization to telomeres, and ensures telomeric stability. TERRA and ATRX are functionally antagonistic at shared target genes: TERRA activates while ATRX represses gene expression at these loci.","method":"Genomic (ChIRP-seq) and proteomic approaches, RNA immunoprecipitation, ATRX ChIP, TERRA depletion, telomere stability assays","journal":"Cell","confidence":"High","confidence_rationale":"Tier 2 / Strong — integration of genomic and proteomic methods, multiple orthogonal approaches establishing functional antagonism and telomeric competition","pmids":["28666128"],"is_preprint":false},{"year":2017,"finding":"ATRX accumulates in nuclear foci during therapy-induced senescence in a manner dependent on its ability to interact with H3K9me3 histone and HP1; ATRX is required for therapy-induced senescence across multiple transformed cell types, and loss of ATRX in senescent cells destabilizes senescence-associated heterochromatic foci. Additionally, ATRX binds to and suppresses expression from the HRAS locus, and repression of HRAS is sufficient to promote quiescent-to-senescent transition.","method":"ATRX depletion/knockout, live cell imaging of nuclear foci, ChIP for H3K9me3/HP1, HRAS locus ChIP, gene expression analysis, senescence assays","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple orthogonal methods (ChIP, KD/KO, rescue, gene expression) in multiple cell types, single rigorous study","pmids":["28855512"],"is_preprint":false},{"year":2018,"finding":"ATRX operates downstream of the Rad51 removal step in homologous recombination and interacts with PCNA and RFC-1 to promote DNA repair synthesis during HR. ATRX depletion abolishes DNA repair synthesis and sister chromatid exchange at exogenously induced DSBs. ATRX and DAXX together deposit histone H3.3 during DNA repair synthesis, indicating ATRX facilitates chromatin reconstitution required for extended repair synthesis.","method":"Co-immunoprecipitation (ATRX-PCNA, ATRX-RFC-1), ATRX/DAXX/H3.3 siRNA depletion, SCE assay, DNA repair synthesis assay, epistasis analysis","journal":"Molecular cell","confidence":"High","confidence_rationale":"Tier 1–2 / Strong — direct interaction (Co-IP), functional repair assays, epistasis, multiple depletions, single rigorous study","pmids":["29937341"],"is_preprint":false},{"year":2018,"finding":"ATRX forms a complex with EZH2, and this ATRX/EZH2 complex epigenetically regulates FADD/PARP1 axis in glioma: ATRX downregulates FADD expression via H3K27me3 enrichment at the FADD locus in an EZH2-dependent manner, which stabilizes PARP1 protein, contributing to TMZ resistance.","method":"CRISPR-Cas9 ATRX knockout, ChIP-seq (H3K27me3), co-immunoprecipitation (ATRX/EZH2), gene expression analysis, in vitro and in vivo tumor assays","journal":"Theranostics","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP-seq and Co-IP with functional readout, single lab","pmids":["32194873"],"is_preprint":false},{"year":2018,"finding":"ATRX depletion in mouse ES cells leads to loss of rDNA copy number through disruption of H3.3 deposition and failure of heterochromatin formation at rDNA repeats; ATRX-depleted cells show reduced ribosomal RNA transcription and increased sensitivity to Pol I inhibitor CX5461.","method":"ATRX depletion in mouse ES cells, H3.3 ChIP, rDNA copy number analysis, rRNA transcription assay, drug sensitivity assay","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — multiple functional assays and ChIP linking ATRX to H3.3 deposition at rDNA, single lab","pmids":["29669917"],"is_preprint":false},{"year":2018,"finding":"ATRX binds to G-quadruplexes in CpG islands of the imprinted Xlr3b gene in mouse brain and regulates its expression by recruiting DNA methyltransferases; ATRX mutation leads to aberrant upregulation of Xlr3b, which inhibits dendritic mRNA transport and impairs synaptic function.","method":"ChIP (ATRX at G4/CpG islands), G4 binding assay, DNA methyltransferase recruitment assay, dendritic transport assay, ATR-X mouse model","journal":"Nature medicine","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP, mouse model, and functional cellular readouts; single lab","pmids":["29785027"],"is_preprint":false},{"year":2018,"finding":"The EBV tegument protein BNRF1 interacts with host Daxx at PML nuclear bodies and disrupts the Daxx-ATRX chromatin remodeling complex; knockdown of DAXX and ATRX induces EBV reactivation from latency, demonstrating that the Daxx-ATRX complex regulates viral chromatin and suppresses EBV lytic reactivation.","method":"Co-immunoprecipitation (BNRF1-Daxx), ATRX/Daxx knockdown, RT-PCR for viral gene expression, EBV reactivation assay","journal":"PLoS pathogens","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — Co-IP and functional knockdown with viral reactivation readout, single lab","pmids":["22102817"],"is_preprint":false},{"year":2018,"finding":"ATRX colocalizes with herpes simplex virus DNA within 15 minutes of nuclear entry, and although initial viral heterochromatin formation is ATRX-independent, ATRX is specifically required for maintaining viral heterochromatin stability from 4 to 8 hours post-infection during transcriptional stress.","method":"Bioorthogonal genome labeling, ATRX depletion (fibroblasts), HSV infection assay, viral mRNA quantification, viral DNA accumulation assay, inhibition of transcription","journal":"eLife","confidence":"High","confidence_rationale":"Tier 2 / Strong — direct localization to viral DNA, ATRX-KO with mechanistic rescue (transcription inhibition), separable mechanisms established rigorously","pmids":["30465651"],"is_preprint":false},{"year":2020,"finding":"TERRA modulates ATRX occupancy on repetitive sequences and over genes, and maintains DNA G-quadruplex structures at TERRA target and non-target sites. TERRA prevents ATRX from binding to subtelomeric regions and represses H3K9me3 formation; knockdown of TERRA reduces DNA G4 signals whereas ATRX silencing elevates G4 formation, indicating ATRX and TERRA oppositely regulate G4 structures.","method":"G4 ChIP-seq, ATRX ChIP-seq, TERRA depletion, ATRX knockdown, H3K9me3 ChIP","journal":"Nucleic acids research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — multiple ChIP-seq methods and functional knockdowns, single lab","pmids":["36440760"],"is_preprint":false},{"year":2020,"finding":"ATRX has RNA binding regions (RBRs) distinct from its PHD and helicase domains; deletion of the major ATRX RBR in the N-terminal region disrupts ATRX interactions with RNA in vitro and in vivo, alters its chromatin binding properties, results in redistribution of ATRX on chromatin, and affects PRC2 localization at a subset of polycomb target genes.","method":"RNA immunoprecipitation, in vitro RNA binding assay, ChIP-seq (ATRX-ΔRBR), ATRX deletion mutant analysis, PRC2 ChIP-seq","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 1–2 / Strong — in vitro binding plus in vivo ChIP-seq, domain-deletion mutagenesis, functional consequence on PRC2 localization established","pmids":["32376827"],"is_preprint":false},{"year":2021,"finding":"ATRX associates with MCM replication complex subunits; loss of ATRX leads to G-quadruplex structure accumulation at newly synthesized DNA. Both the helicase domain and H3.3 chaperone function of ATRX are required to protect cells from G4-induced replicative stress, and these activities are upstream of heterochromatin formation mediated by ESET histone methyltransferase.","method":"Co-immunoprecipitation (ATRX-MCM), ATRX domain mutants, G4 immunofluorescence at newly synthesized DNA, ESET epistasis, ATRX knockout","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Strong — Co-IP, domain mutants, epistasis with ESET, and functional G4 assay; multiple orthogonal methods in single rigorous study","pmids":["34162889"],"is_preprint":false},{"year":2021,"finding":"ATRX limits accessibility of histone H3-loaded HSV genomes to reduce viral DNA accessibility for transcription; ATRX/DAXX complex is unique among nuclear H3 chaperones in restricting ICP0-null HSV infection. ATRX is not required for initial H3 deposition on viral DNA but reduces viral DNA accessibility as shown by ATAC-seq and enhanced nucleosome-like structure accumulation.","method":"Systematic depletion of nuclear H3 chaperones, ChIP-seq (total H3), ATAC-seq, ATRX-KO fibroblasts, ICP0-null HSV infection assay","journal":"PLoS pathogens","confidence":"High","confidence_rationale":"Tier 2 / Strong — systematic chaperone depletion comparison, ATAC-seq and ChIP-seq, ATRX-KO; multiple orthogonal methods establishing mechanistic distinction between initial deposition and heterochromatin maintenance","pmids":["33909709"],"is_preprint":false},{"year":2021,"finding":"ATRX-dependent HR outcompetes RECQ5-dependent SDSA for the repair of most two-ended DSBs in human cells, frequently forming sister chromatid exchanges (crossovers). Subpathway choice depends on interaction of both ATRX and RECQ5 with PCNA. ATRX-pathway HR intermediates require MUS81 and GEN1 (but not BLM) for resolution, suggesting formation of joint molecules distinct from classical Holliday junctions.","method":"ATRX/RECQ5/PCNA knockouts and epistasis, SCE assay, MUS81/GEN1 knockdown, HR reporter assay, ultra-fine bridge analysis","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple epistasis experiments with defined functional readouts (SCE, ultra-fine bridges, MUS81 recruitment), single rigorous study","pmids":["33431668"],"is_preprint":false},{"year":2022,"finding":"Loss of ATRX or DAXX leads to genome-wide reduction in p53 DNA binding and loss of chromatin accessibility at p53 response elements, associated with depletion of histone H3.3 and accumulation of γH2AX at p53 sites including subtelomeres, indicating ATRX/DAXX-dependent H3.3 deposition is required for p53 chromatin access and DNA damage response.","method":"ChIP-seq (p53), ATAC-seq, H3.3 and γH2AX ChIP-seq, DAXX/ATRX knockout","journal":"Nature communications","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP-seq and ATAC-seq with KO, single lab, mechanistic link via H3.3","pmids":["36028493"],"is_preprint":false},{"year":2022,"finding":"ATRX binds regulatory elements of cell-cycle phase transition genes in GBM cells; ATRX loss leads to marked reduction in CHEK1 (Checkpoint Kinase 1) expression, causing early release of G2/M entry after irradiation and enhanced ATM activation.","method":"ATRX ChIP, ATRX loss-of-function (CRISPR), CHEK1 expression analysis, cell cycle assay post-irradiation, ATM activation assay","journal":"Cell reports","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and CRISPR KO with defined cell-cycle readout, single lab","pmids":["35021084"],"is_preprint":false},{"year":2023,"finding":"Atrx deletion results in downregulation of the cGAS/STING innate immune signaling pathway at multiple points without transcriptional downregulation or mutations in pathway components; Atrx-deleted sarcomas show reduced adaptive immune response and impaired cGAS/STING signaling.","method":"Primary mouse sarcoma model (Atrx deletion), gene expression analysis, in vivo tumor treatment assays, immune profiling","journal":"The Journal of clinical investigation","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — in vivo mouse model with mechanistic pathway analysis, single lab","pmids":["37200088"],"is_preprint":false},{"year":2004,"finding":"C. elegans xnp-1 (ATRX ortholog) and lin-35/Rb function redundantly in somatic gonad development; xnp-1;lin-35 double mutants are sterile with severe defects in sheath and spermatheca lineages, establishing a functional genetic interaction between ATRX and Rb family members.","method":"C. elegans genetic epistasis, double-mutant analysis, GFP reporter for xnp-1 expression","journal":"Developmental biology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — genetic epistasis with defined developmental phenotype, single lab","pmids":["15328017"],"is_preprint":false},{"year":2012,"finding":"In mammalian oocytes, ATRX binds to centromeric heterochromatin and is required for accurate chromosome segregation during meiosis; loss of ATRX induces abnormal meiotic chromosome morphology, reduces histone H3 phosphorylation at centromeres, and promotes high-incidence aneuploidy associated with severely reduced fertility.","method":"ATRX loss-of-function in mouse oocytes, immunofluorescence, chromosome spread analysis, fertility assay","journal":"Results and problems in cell differentiation","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — in vivo mouse oocyte model, multiple functional readouts, single lab","pmids":["22918800"],"is_preprint":false}],"current_model":"ATRX is an ATP-dependent SWI/SNF-family chromatin remodeler that, together with its partner DAXX, deposits histone variant H3.3 at pericentromeric heterochromatin, telomeres, and rDNA repeats; it functions as a high-affinity RNA-binding protein that directs PRC2 loading onto Xist RNA and polycomb targets; it binds G-quadruplex DNA structures and recruits DNA methyltransferases to suppress transcription at these sites; it promotes a crossover-prone HR subpathway by interacting with PCNA and RFC-1 to drive DNA repair synthesis downstream of Rad51 removal; it maintains heterochromatin stability at both cellular and viral chromatin under transcriptional stress; it suppresses alternative lengthening of telomeres (ALT); and it regulates cell-cycle checkpoint gene expression, mitotic chromosome cohesion/congression, senescence-associated heterochromatic foci, and innate immune (cGAS/STING) signaling, with loss of any of these activities contributing to genomic instability and cancer."},"narrative":{"mechanistic_narrative":"ATRX is an ATP-dependent SWI/SNF-family chromatin regulator that maintains heterochromatin integrity at repetitive and structurally challenging genomic loci, with loss of its activities driving genomic instability [PMID:18227278, PMID:34162889]. Through its zinc-finger domain it binds double-stranded DNA, and disease-causing ATR-X mutations in this domain abolish DNA binding and impair nuclear localization [PMID:11015451]. Acting with its partner DAXX, ATRX deposits histone variant H3.3 to establish and maintain repressed chromatin states at rDNA repeats, p53 response elements, and viral genomes, where it restricts chromatin accessibility rather than initiating histone deposition [PMID:29669917, PMID:33909709, PMID:36028493]. ATRX is also a high-affinity RNA-binding protein with RNA-binding regions distinct from its PHD and helicase domains; it directly binds RepA/Xist RNA to load PRC2 in cis and is antagonized at telomeres by TERRA RNA, which competes for ATRX binding and modulates its genome-wide occupancy [PMID:25417162, PMID:32376827, PMID:28666128]. A central activity is the resolution of G-quadruplex structures: ATRX associates with the MCM replication complex and uses its helicase and H3.3-chaperone functions to suppress G4 accumulation at newly synthesized DNA upstream of ESET-mediated heterochromatin formation, and recruits DNA methyltransferases to G4-containing CpG islands to silence target genes [PMID:34162889, PMID:29785027]. In DNA repair, ATRX promotes a crossover-prone homologous-recombination subpathway downstream of Rad51 removal, interacting with PCNA and RFC-1 to drive repair synthesis that outcompetes RECQ5-dependent SDSA and generates sister-chromatid exchanges resolved by MUS81/GEN1 [PMID:29937341, PMID:33431668]. ATRX additionally ensures accurate mitotic and meiotic chromosome segregation [PMID:18227278, PMID:22918800], suppresses alternative lengthening of telomeres [PMID:26001292], and regulates checkpoint and immune gene expression including CHEK1 and the cGAS/STING pathway [PMID:35021084, PMID:37200088]. Mutations in the ATRX DNA-binding domain underlie the ATR-X intellectual disability syndrome [PMID:11015451].","teleology":[{"year":1998,"claim":"Established an early physical link between ATRX and the Polycomb machinery, raising the hypothesis that ATRX regulates transcription through chromatin remodeling with PRC2.","evidence":"Yeast two-hybrid against the EZH2 SET domain","pmids":["9499421"],"confidence":"Low","gaps":["Single yeast two-hybrid without biochemical validation of a direct interaction","No functional consequence demonstrated","No cellular localization of the interaction"]},{"year":2000,"claim":"Defined the zinc-finger domain as ATRX's DNA-binding module and connected its mutation to the ATR-X disease phenotype.","evidence":"In vitro DNA binding assays plus immunocytochemistry and western blot in ATR-X patient cells","pmids":["11015451"],"confidence":"Medium","gaps":["Sequence specificity of DNA binding not defined","Link between DNA-binding loss and chromatin function not established","Single lab"]},{"year":2008,"claim":"Demonstrated ATRX is required for faithful mitosis, extending its role from transcription to chromosome segregation.","evidence":"Live imaging, RNAi, and a mouse neuroprogenitor genetic model with immunofluorescence","pmids":["18227278"],"confidence":"High","gaps":["Molecular basis for cohesion/congression defect not resolved","Direct cohesion machinery partners not identified"]},{"year":2010,"claim":"Connected ATRX biochemically and genetically to HP1-dependent pericentric heterochromatin assembly, using invertebrate models.","evidence":"Co-IP, in vitro ATPase assay, immunolocalization, and PEV genetics in Drosophila (with related C. elegans epistasis)","pmids":["20154359","15649460","19706533","15328017"],"confidence":"High","gaps":["Direct extrapolation to human ATRX isoforms not shown","Mechanism of HP1a stimulation of ATPase not detailed"]},{"year":2014,"claim":"Revealed ATRX as a high-affinity RNA-binding protein that directs PRC2 loading onto Xist RNA, defining a non-canonical RNA-guided chromatin function.","evidence":"Unbiased proteomics, RNA-IP, ChIP-seq and epigenomic profiling with ATRX KO/KD","pmids":["25417162"],"confidence":"High","gaps":["RNA-binding domain not yet mapped at this stage","How RNA binding integrates with DNA/H3.3 functions unclear"]},{"year":2015,"claim":"Provided direct functional evidence that ATRX represses the ALT telomere-maintenance pathway, but only in cooperation with other alterations.","evidence":"Transient ATRX re-expression rescue in ALT-positive cells with C-circle/APB assays","pmids":["26001292"],"confidence":"High","gaps":["Identity of cooperating alterations needed for ALT not defined","Mechanistic link to H3.3/telomeric chromatin not fully resolved"]},{"year":2017,"claim":"Defined ATRX's role in heterochromatin-dependent senescence and identified TERRA as an RNA competitor that restricts ATRX from telomeres.","evidence":"ChIRP-seq/RIP/ATRX ChIP and TERRA depletion (telomere study); ChIP, KD/KO and senescence assays with HRAS repression","pmids":["28666128","28855512"],"confidence":"High","gaps":["Structural basis of RNA-vs-DNA competition not solved","Direct connection between senescence foci and ALT suppression unclear"]},{"year":2018,"claim":"Established ATRX's role in homologous recombination repair synthesis and extended its chromatin/H3.3 functions to rDNA, imprinted G4 loci, and viral chromatin.","evidence":"Co-IP (PCNA/RFC-1), SCE and repair-synthesis assays; H3.3 ChIP at rDNA; G4/CpG ChIP and DNMT recruitment in mouse brain; ATRX/DAXX knockdown in EBV and HSV systems","pmids":["29937341","29669917","29785027","22102817","30465651"],"confidence":"High","gaps":["Whether HR, rDNA, and viral roles share one molecular mechanism not established","NHEJ versus HR balance (cf. PMID 26936505) not reconciled"]},{"year":2020,"claim":"Mapped ATRX's RNA-binding regions to the N-terminus, distinct from PHD and helicase domains, and showed RNA binding shapes ATRX chromatin distribution and PRC2 localization.","evidence":"In vitro RNA binding, RIP, and ChIP-seq of an ATRX-deltaRBR deletion mutant with PRC2 ChIP-seq","pmids":["32376827","36440760"],"confidence":"High","gaps":["Sequence/structure determinants of RBR specificity not resolved","Interplay of RBR with helicase activity not defined"]},{"year":2021,"claim":"Integrated ATRX into replication-coupled G-quadruplex resolution and defined a crossover-prone HR subpathway distinct from SDSA.","evidence":"Co-IP with MCM, ATRX domain mutants and ESET epistasis with G4 imaging; ATRX/RECQ5/PCNA epistasis with SCE and MUS81/GEN1 dependence; HSV ATAC-seq","pmids":["34162889","33431668","33909709"],"confidence":"High","gaps":["Order of events linking G4 unwinding, H3.3 deposition, and ESET methylation not fully resolved","Structure of the ATRX-pathway HR joint molecules not determined"]},{"year":2022,"claim":"Connected ATRX/DAXX-dependent H3.3 deposition to p53 chromatin access and checkpoint gene control, linking chromatin function to the DNA damage response.","evidence":"p53/H3.3/gammaH2AX ChIP-seq and ATAC-seq with ATRX/DAXX KO; ATRX ChIP and CRISPR KO with CHEK1/cell-cycle readouts","pmids":["36028493","35021084"],"confidence":"Medium","gaps":["Direct versus indirect effect on p53 binding not separated","Single lab for each finding"]},{"year":2023,"claim":"Linked ATRX loss to suppression of cGAS/STING innate immune signaling, connecting its chromatin role to tumor immune evasion.","evidence":"Primary Atrx-deleted mouse sarcoma model with gene expression and immune profiling","pmids":["37200088"],"confidence":"Medium","gaps":["Molecular step at which ATRX modulates cGAS/STING not pinpointed","Whether effect is chromatin-mediated not established"]},{"year":null,"claim":"How ATRX's distinct activities — DNA/G4 binding, RNA binding, H3.3 deposition, helicase remodeling, and HR repair synthesis — are coordinated into a single integrated mechanism at specific loci remains unresolved.","evidence":"","pmids":[],"confidence":"Medium","gaps":["No unifying structural/biochemical model integrating ATRX domains","Locus-selectivity determinants between functions unknown","Reconciliation of NHEJ versus HR roles incomplete"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0003677","term_label":"DNA binding","supporting_discovery_ids":[1,15,18,20]},{"term_id":"GO:0003723","term_label":"RNA binding","supporting_discovery_ids":[7,10,19]},{"term_id":"GO:0140657","term_label":"ATP-dependent activity","supporting_discovery_ids":[4,20]},{"term_id":"GO:0042393","term_label":"histone binding","supporting_discovery_ids":[11]},{"term_id":"GO:0140096","term_label":"catalytic activity, acting on a protein","supporting_discovery_ids":[12,14,21,23]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[1,11]},{"term_id":"GO:0005694","term_label":"chromosome","supporting_discovery_ids":[2,4,27]},{"term_id":"GO:0005730","term_label":"nucleolus","supporting_discovery_ids":[14]}],"pathway":[{"term_id":"R-HSA-4839726","term_label":"Chromatin organization","supporting_discovery_ids":[6,14,20,21]},{"term_id":"R-HSA-73894","term_label":"DNA Repair","supporting_discovery_ids":[12,22,23]},{"term_id":"R-HSA-1640170","term_label":"Cell Cycle","supporting_discovery_ids":[2,24,27]},{"term_id":"R-HSA-74160","term_label":"Gene expression (Transcription)","supporting_discovery_ids":[7,15,19]}],"complexes":["ATRX/DAXX H3.3 chaperone complex","PRC2 (functional association)"],"partners":["DAXX","EZH2","HP1A","PCNA","RFC1","MCM"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"P46100","full_name":"Transcriptional regulator ATRX","aliases":["ATP-dependent helicase ATRX","X-linked helicase II","X-linked nuclear protein","XNP","Znf-HX"],"length_aa":2492,"mass_kda":282.6,"function":"Involved in transcriptional regulation and chromatin remodeling. Facilitates DNA replication in multiple cellular environments and is required for efficient replication of a subset of genomic loci. Binds to DNA tandem repeat sequences in both telomeres and euchromatin and in vitro binds DNA quadruplex structures. May help stabilizing G-rich regions into regular chromatin structures by remodeling G4 DNA and incorporating H3.3-containing nucleosomes. Catalytic 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. Its heterochromatin targeting is proposed to involve a combinatorial readout of histone H3 modifications (specifically methylation states of H3K9 and H3K4) and association with CBX5. Involved in maintaining telomere structural integrity in embryonic stem cells which probably implies recruitment of CBX5 to telomeres. Reports on the involvement in transcriptional regulation of telomeric repeat-containing RNA (TERRA) are conflicting; according to a report, it is not sufficient to decrease chromatin condensation at telomeres nor to increase expression of telomeric RNA in fibroblasts (PubMed:24500201). May be involved in telomere maintenance via recombination in ALT (alternative lengthening of telomeres) cell lines. Acts as a negative regulator of chromatin incorporation of transcriptionally repressive histone MACROH2A1, particularily at telomeres and the alpha-globin cluster in erythroleukemic cells. Participates in the allele-specific gene expression at the imprinted IGF2/H19 gene locus. On the maternal allele, required for the chromatin occupancy of SMC1 and CTCF within the H19 imprinting control region (ICR) and involved in esatblishment of histone tails modifications in the ICR. May be involved in brain development and facial morphogenesis. Binds to zinc-finger coding genes with atypical chromatin signatures and regulates its H3K9me3 levels. Forms a complex with ZNF274, TRIM28 and SETDB1 to facilitate the deposition and maintenance of H3K9me3 at the 3' exons of zinc-finger genes (PubMed:27029610)","subcellular_location":"Nucleus; Chromosome, telomere; Nucleus, PML body","url":"https://www.uniprot.org/uniprotkb/P46100/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/ATRX","classification":"Not 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letters","url":"https://pubmed.ncbi.nlm.nih.gov/29725455","citation_count":27,"is_preprint":false},{"pmid":"33431668","id":"PMC_33431668","title":"ATRX and RECQ5 define distinct homologous recombination subpathways.","date":"2021","source":"Proceedings of the National Academy of Sciences of the United States of America","url":"https://pubmed.ncbi.nlm.nih.gov/33431668","citation_count":27,"is_preprint":false},{"pmid":"35384159","id":"PMC_35384159","title":"Mutational spectrum of ATRX aberrations in neuroblastoma and associated patient and tumor characteristics.","date":"2022","source":"Cancer science","url":"https://pubmed.ncbi.nlm.nih.gov/35384159","citation_count":27,"is_preprint":false},{"pmid":"38272925","id":"PMC_38272925","title":"Interplay between ATRX and IDH1 mutations governs innate immune responses in diffuse gliomas.","date":"2024","source":"Nature communications","url":"https://pubmed.ncbi.nlm.nih.gov/38272925","citation_count":26,"is_preprint":false},{"pmid":"36440760","id":"PMC_36440760","title":"TERRA regulates DNA G-quadruplex formation and ATRX recruitment to chromatin.","date":"2022","source":"Nucleic acids research","url":"https://pubmed.ncbi.nlm.nih.gov/36440760","citation_count":26,"is_preprint":false},{"pmid":"21851155","id":"PMC_21851155","title":"ATRX in chromatin assembly and genome architecture during development and disease.","date":"2011","source":"Biochemistry and cell biology = Biochimie et biologie cellulaire","url":"https://pubmed.ncbi.nlm.nih.gov/21851155","citation_count":26,"is_preprint":false},{"pmid":"12560498","id":"PMC_12560498","title":"Genome instability in rad54 mutants of Saccharomyces cerevisiae.","date":"2003","source":"Nucleic acids research","url":"https://pubmed.ncbi.nlm.nih.gov/12560498","citation_count":26,"is_preprint":false},{"pmid":"9043863","id":"PMC_9043863","title":"A point mutation in the XNP gene, associated with an ATR-X phenotype without alpha-thalassemia.","date":"1996","source":"European journal of human genetics : EJHG","url":"https://pubmed.ncbi.nlm.nih.gov/9043863","citation_count":25,"is_preprint":false},{"pmid":"33909709","id":"PMC_33909709","title":"ATRX limits the accessibility of histone H3-occupied HSV genomes during lytic infection.","date":"2021","source":"PLoS pathogens","url":"https://pubmed.ncbi.nlm.nih.gov/33909709","citation_count":25,"is_preprint":false},{"pmid":"15350606","id":"PMC_15350606","title":"ATRX and sex differentiation.","date":"2004","source":"Trends in endocrinology and metabolism: TEM","url":"https://pubmed.ncbi.nlm.nih.gov/15350606","citation_count":24,"is_preprint":false},{"pmid":"37439356","id":"PMC_37439356","title":"TLK1-mediated RAD54 phosphorylation spatio-temporally regulates Homologous Recombination Repair.","date":"2023","source":"Nucleic acids research","url":"https://pubmed.ncbi.nlm.nih.gov/37439356","citation_count":24,"is_preprint":false},{"pmid":"37200088","id":"PMC_37200088","title":"Atrx deletion impairs CGAS/STING signaling and increases sarcoma response to radiation and oncolytic herpesvirus.","date":"2023","source":"The Journal of clinical investigation","url":"https://pubmed.ncbi.nlm.nih.gov/37200088","citation_count":24,"is_preprint":false},{"pmid":"18617519","id":"PMC_18617519","title":"Rad51 protein stimulates the branch migration activity of Rad54 protein.","date":"2008","source":"The Journal of biological chemistry","url":"https://pubmed.ncbi.nlm.nih.gov/18617519","citation_count":23,"is_preprint":false},{"pmid":"33185188","id":"PMC_33185188","title":"Rdh54/Tid1 inhibits Rad51-Rad54-mediated D-loop formation and limits D-loop length.","date":"2020","source":"eLife","url":"https://pubmed.ncbi.nlm.nih.gov/33185188","citation_count":21,"is_preprint":false},{"pmid":"22918800","id":"PMC_22918800","title":"Chromatin structure and ATRX function in mouse oocytes.","date":"2012","source":"Results and problems in cell differentiation","url":"https://pubmed.ncbi.nlm.nih.gov/22918800","citation_count":21,"is_preprint":false},{"pmid":"34524523","id":"PMC_34524523","title":"ATR-X syndrome: genetics, clinical spectrum, and management.","date":"2021","source":"Human genetics","url":"https://pubmed.ncbi.nlm.nih.gov/34524523","citation_count":21,"is_preprint":false},{"pmid":"15545651","id":"PMC_15545651","title":"Lig4 and rad54 are required for repair of DNA double-strand breaks induced by P-element excision in Drosophila.","date":"2004","source":"Genetics","url":"https://pubmed.ncbi.nlm.nih.gov/15545651","citation_count":21,"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}],"cost":{"stage1":{"model":"claude-sonnet-4-6","input_tokens":42797,"output_tokens":6890,"usd":0.115871,"stage1_stop_reason":"end_turn"},"stage2":{"model":"claude-opus-4-8","input_tokens":15922,"output_tokens":4277,"usd":0.093268,"stage2_stop_reason":"end_turn"},"total_usd":0.209139,"stage1_batch_id":"msgbatch_0179Z2pxRYBsXi2xADneafRw","stage2_batch_id":"msgbatch_01LaY9ZaVdgjWArcZo9eqQE5","note":"batch pricing = 50% of standard"},"stage1_raw":"```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 1998,\n      \"finding\": \"The XNP/ATRX protein interacts specifically with the SET domain of human EZH2, as demonstrated by yeast two-hybrid analysis, suggesting ATRX regulates gene transcription through chromatin remodeling in association with PRC2 components.\",\n      \"method\": \"Yeast two-hybrid assay\",\n      \"journal\": \"Human molecular genetics\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — single yeast two-hybrid assay, single lab, no biochemical validation of direct interaction\",\n      \"pmids\": [\"9499421\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"The zinc finger domain of XNP/ATRX mediates double-stranded DNA binding in vitro, and disease-causing mutations in this domain severely reduce DNA binding capacity; additionally, ATR-X patient cells show altered or absent XNP/ATRX protein expression and impaired nuclear localization.\",\n      \"method\": \"In vitro DNA binding assays, immunocytochemistry, western blot with patient-derived cells and monoclonal antibodies\",\n      \"journal\": \"Journal of medical genetics\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — multiple orthogonal methods (in vitro binding, immunocytochemistry, western blot), single lab\",\n      \"pmids\": [\"11015451\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"ATRX is required for normal mitotic progression in human cultured cells and mouse neuroprogenitors; loss of ATRX causes defective sister chromatid cohesion and chromosome congression at the metaphase plate, as shown by live cell imaging and analysis of embryonic mouse brain neuroprogenitors.\",\n      \"method\": \"Live cell imaging, RNAi-mediated depletion, mouse genetic model, immunofluorescence\",\n      \"journal\": \"The Journal of cell biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple orthogonal methods (live imaging, in vivo mouse model, RNAi), replicated in both human cells and mouse brain\",\n      \"pmids\": [\"18227278\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"Drosophila XNP (ATRX ortholog) localizes to active genes and a decondensed satellite DNA focus near heterochromatin on the X chromosome, corresponding to sites of ongoing nucleosome replacement; XNP modulates nucleosome dynamics at these sites to limit chromatin accessibility and contributes to heterochromatic gene silencing.\",\n      \"method\": \"Immunolocalization, position-effect variegation assays, overexpression in Drosophila\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genetic and localization studies in Drosophila, multiple methods, single lab\",\n      \"pmids\": [\"19706533\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"Drosophila ATRX forms a complex with HP1a; the ATRX185 isoform but not ATRX125 is concentrated in pericentric beta-heterochromatin of the X chromosome, HP1a strongly stimulates ATRX185 biochemical activities in vitro, and ATRX185 is required for HP1a deposition in pericentric heterochromatin. Loss-of-function ATRX alleles suppress position effect variegation.\",\n      \"method\": \"Biochemical fractionation, co-immunoprecipitation, in vitro ATPase assay, immunolocalization, Drosophila genetics (PEV suppression)\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple orthogonal methods (biochemical, genetic, localization) in single study, functional consequence established\",\n      \"pmids\": [\"20154359\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"C. elegans xnp-1 (ATRX ortholog) functions together with lin-35/Rb, hpl-2/HP1, and the NuRD complex during development; double mutants show larval arrest with cessation of growth; xnp-1 and lin-35 jointly control transgene silencing via chromatin remodeling.\",\n      \"method\": \"C. elegans genetic epistasis, RNAi, transgene silencing assay\",\n      \"journal\": \"Developmental biology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genetic epistasis with multiple partners, functional phenotypic readouts, single lab\",\n      \"pmids\": [\"15649460\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"ATRX and DAXX are required for transcriptional repression and chromatin assembly at a CMV-promoter transgene array; the array is refractory to activation in ATRX/DAXX-expressing cells but can be robustly activated in ATRX-negative U2OS cells. HSV-1 ICP0 depletes ATRX and DAXX from the array upon activation, and histone H3.3 is recruited but not incorporated into chromatin during activation, indicating ATRX/DAXX maintain a repressed chromatin environment through H3.3 deposition.\",\n      \"method\": \"Single-cell live imaging, inducible transgene array, ATRX-negative cell line comparison, ICP0 expression, histone H3.3 recruitment assay\",\n      \"journal\": \"Journal of cell science\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — multiple cell-based approaches, functional readout, single lab\",\n      \"pmids\": [\"22976303\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"ATRX functions as a high-affinity RNA-binding protein that directly interacts with RepA/Xist RNA to promote loading of PRC2 in vivo. Without ATRX, PRC2 cannot load onto Xist RNA or spread in cis along the X chromosome. Genome-wide, loss of ATRX leads to spatial redistribution of PRC2 and derepression of Polycomb-responsive genes.\",\n      \"method\": \"Unbiased proteomics (mass spectrometry), RNA immunoprecipitation, ChIP-seq, epigenomic profiling, ATRX knockout/knockdown\",\n      \"journal\": \"Cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1–2 / Strong — multiple orthogonal methods (proteomics, RIP, ChIP-seq, KO) in a single rigorous study establishing direct RNA-binding and PRC2 loading function\",\n      \"pmids\": [\"25417162\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"Transient ATRX expression in ALT-positive/ATRX-negative cells directly represses ALT activity, providing functional evidence that ATRX represses the ALT mechanism. ATRX loss alone in mortal or telomerase-positive cells is insufficient to activate ALT; it requires cooperation with additional genetic/epigenetic alterations.\",\n      \"method\": \"ATRX knockout/knockdown, transient ATRX re-expression in ALT-positive cells, ALT assays (C-circle, APB formation)\",\n      \"journal\": \"Oncotarget\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — rescue experiment (re-expression represses ALT) combined with loss-of-function studies, multiple cell line models\",\n      \"pmids\": [\"26001292\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"ATRX deficiency impairs nonhomologous end joining (NHEJ) DNA repair in glioma cells and increases sensitivity to DNA-damaging agents that induce double-strand breaks, establishing a role for ATRX in NHEJ.\",\n      \"method\": \"ATRX-deficient mouse glioma model, NHEJ repair assays, DNA damage sensitivity assays\",\n      \"journal\": \"Science translational medicine\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — animal model and functional repair assays, single lab\",\n      \"pmids\": [\"26936505\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"TERRA RNA competes with telomeric DNA for ATRX binding, suppresses ATRX localization to telomeres, and ensures telomeric stability. TERRA and ATRX are functionally antagonistic at shared target genes: TERRA activates while ATRX represses gene expression at these loci.\",\n      \"method\": \"Genomic (ChIRP-seq) and proteomic approaches, RNA immunoprecipitation, ATRX ChIP, TERRA depletion, telomere stability assays\",\n      \"journal\": \"Cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — integration of genomic and proteomic methods, multiple orthogonal approaches establishing functional antagonism and telomeric competition\",\n      \"pmids\": [\"28666128\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"ATRX accumulates in nuclear foci during therapy-induced senescence in a manner dependent on its ability to interact with H3K9me3 histone and HP1; ATRX is required for therapy-induced senescence across multiple transformed cell types, and loss of ATRX in senescent cells destabilizes senescence-associated heterochromatic foci. Additionally, ATRX binds to and suppresses expression from the HRAS locus, and repression of HRAS is sufficient to promote quiescent-to-senescent transition.\",\n      \"method\": \"ATRX depletion/knockout, live cell imaging of nuclear foci, ChIP for H3K9me3/HP1, HRAS locus ChIP, gene expression analysis, senescence assays\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple orthogonal methods (ChIP, KD/KO, rescue, gene expression) in multiple cell types, single rigorous study\",\n      \"pmids\": [\"28855512\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"ATRX operates downstream of the Rad51 removal step in homologous recombination and interacts with PCNA and RFC-1 to promote DNA repair synthesis during HR. ATRX depletion abolishes DNA repair synthesis and sister chromatid exchange at exogenously induced DSBs. ATRX and DAXX together deposit histone H3.3 during DNA repair synthesis, indicating ATRX facilitates chromatin reconstitution required for extended repair synthesis.\",\n      \"method\": \"Co-immunoprecipitation (ATRX-PCNA, ATRX-RFC-1), ATRX/DAXX/H3.3 siRNA depletion, SCE assay, DNA repair synthesis assay, epistasis analysis\",\n      \"journal\": \"Molecular cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1–2 / Strong — direct interaction (Co-IP), functional repair assays, epistasis, multiple depletions, single rigorous study\",\n      \"pmids\": [\"29937341\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"ATRX forms a complex with EZH2, and this ATRX/EZH2 complex epigenetically regulates FADD/PARP1 axis in glioma: ATRX downregulates FADD expression via H3K27me3 enrichment at the FADD locus in an EZH2-dependent manner, which stabilizes PARP1 protein, contributing to TMZ resistance.\",\n      \"method\": \"CRISPR-Cas9 ATRX knockout, ChIP-seq (H3K27me3), co-immunoprecipitation (ATRX/EZH2), gene expression analysis, in vitro and in vivo tumor assays\",\n      \"journal\": \"Theranostics\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP-seq and Co-IP with functional readout, single lab\",\n      \"pmids\": [\"32194873\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"ATRX depletion in mouse ES cells leads to loss of rDNA copy number through disruption of H3.3 deposition and failure of heterochromatin formation at rDNA repeats; ATRX-depleted cells show reduced ribosomal RNA transcription and increased sensitivity to Pol I inhibitor CX5461.\",\n      \"method\": \"ATRX depletion in mouse ES cells, H3.3 ChIP, rDNA copy number analysis, rRNA transcription assay, drug sensitivity assay\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — multiple functional assays and ChIP linking ATRX to H3.3 deposition at rDNA, single lab\",\n      \"pmids\": [\"29669917\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"ATRX binds to G-quadruplexes in CpG islands of the imprinted Xlr3b gene in mouse brain and regulates its expression by recruiting DNA methyltransferases; ATRX mutation leads to aberrant upregulation of Xlr3b, which inhibits dendritic mRNA transport and impairs synaptic function.\",\n      \"method\": \"ChIP (ATRX at G4/CpG islands), G4 binding assay, DNA methyltransferase recruitment assay, dendritic transport assay, ATR-X mouse model\",\n      \"journal\": \"Nature medicine\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP, mouse model, and functional cellular readouts; single lab\",\n      \"pmids\": [\"29785027\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"The EBV tegument protein BNRF1 interacts with host Daxx at PML nuclear bodies and disrupts the Daxx-ATRX chromatin remodeling complex; knockdown of DAXX and ATRX induces EBV reactivation from latency, demonstrating that the Daxx-ATRX complex regulates viral chromatin and suppresses EBV lytic reactivation.\",\n      \"method\": \"Co-immunoprecipitation (BNRF1-Daxx), ATRX/Daxx knockdown, RT-PCR for viral gene expression, EBV reactivation assay\",\n      \"journal\": \"PLoS pathogens\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP and functional knockdown with viral reactivation readout, single lab\",\n      \"pmids\": [\"22102817\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"ATRX colocalizes with herpes simplex virus DNA within 15 minutes of nuclear entry, and although initial viral heterochromatin formation is ATRX-independent, ATRX is specifically required for maintaining viral heterochromatin stability from 4 to 8 hours post-infection during transcriptional stress.\",\n      \"method\": \"Bioorthogonal genome labeling, ATRX depletion (fibroblasts), HSV infection assay, viral mRNA quantification, viral DNA accumulation assay, inhibition of transcription\",\n      \"journal\": \"eLife\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — direct localization to viral DNA, ATRX-KO with mechanistic rescue (transcription inhibition), separable mechanisms established rigorously\",\n      \"pmids\": [\"30465651\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"TERRA modulates ATRX occupancy on repetitive sequences and over genes, and maintains DNA G-quadruplex structures at TERRA target and non-target sites. TERRA prevents ATRX from binding to subtelomeric regions and represses H3K9me3 formation; knockdown of TERRA reduces DNA G4 signals whereas ATRX silencing elevates G4 formation, indicating ATRX and TERRA oppositely regulate G4 structures.\",\n      \"method\": \"G4 ChIP-seq, ATRX ChIP-seq, TERRA depletion, ATRX knockdown, H3K9me3 ChIP\",\n      \"journal\": \"Nucleic acids research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — multiple ChIP-seq methods and functional knockdowns, single lab\",\n      \"pmids\": [\"36440760\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"ATRX has RNA binding regions (RBRs) distinct from its PHD and helicase domains; deletion of the major ATRX RBR in the N-terminal region disrupts ATRX interactions with RNA in vitro and in vivo, alters its chromatin binding properties, results in redistribution of ATRX on chromatin, and affects PRC2 localization at a subset of polycomb target genes.\",\n      \"method\": \"RNA immunoprecipitation, in vitro RNA binding assay, ChIP-seq (ATRX-ΔRBR), ATRX deletion mutant analysis, PRC2 ChIP-seq\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1–2 / Strong — in vitro binding plus in vivo ChIP-seq, domain-deletion mutagenesis, functional consequence on PRC2 localization established\",\n      \"pmids\": [\"32376827\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"ATRX associates with MCM replication complex subunits; loss of ATRX leads to G-quadruplex structure accumulation at newly synthesized DNA. Both the helicase domain and H3.3 chaperone function of ATRX are required to protect cells from G4-induced replicative stress, and these activities are upstream of heterochromatin formation mediated by ESET histone methyltransferase.\",\n      \"method\": \"Co-immunoprecipitation (ATRX-MCM), ATRX domain mutants, G4 immunofluorescence at newly synthesized DNA, ESET epistasis, ATRX knockout\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — Co-IP, domain mutants, epistasis with ESET, and functional G4 assay; multiple orthogonal methods in single rigorous study\",\n      \"pmids\": [\"34162889\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"ATRX limits accessibility of histone H3-loaded HSV genomes to reduce viral DNA accessibility for transcription; ATRX/DAXX complex is unique among nuclear H3 chaperones in restricting ICP0-null HSV infection. ATRX is not required for initial H3 deposition on viral DNA but reduces viral DNA accessibility as shown by ATAC-seq and enhanced nucleosome-like structure accumulation.\",\n      \"method\": \"Systematic depletion of nuclear H3 chaperones, ChIP-seq (total H3), ATAC-seq, ATRX-KO fibroblasts, ICP0-null HSV infection assay\",\n      \"journal\": \"PLoS pathogens\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — systematic chaperone depletion comparison, ATAC-seq and ChIP-seq, ATRX-KO; multiple orthogonal methods establishing mechanistic distinction between initial deposition and heterochromatin maintenance\",\n      \"pmids\": [\"33909709\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"ATRX-dependent HR outcompetes RECQ5-dependent SDSA for the repair of most two-ended DSBs in human cells, frequently forming sister chromatid exchanges (crossovers). Subpathway choice depends on interaction of both ATRX and RECQ5 with PCNA. ATRX-pathway HR intermediates require MUS81 and GEN1 (but not BLM) for resolution, suggesting formation of joint molecules distinct from classical Holliday junctions.\",\n      \"method\": \"ATRX/RECQ5/PCNA knockouts and epistasis, SCE assay, MUS81/GEN1 knockdown, HR reporter assay, ultra-fine bridge analysis\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple epistasis experiments with defined functional readouts (SCE, ultra-fine bridges, MUS81 recruitment), single rigorous study\",\n      \"pmids\": [\"33431668\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"Loss of ATRX or DAXX leads to genome-wide reduction in p53 DNA binding and loss of chromatin accessibility at p53 response elements, associated with depletion of histone H3.3 and accumulation of γH2AX at p53 sites including subtelomeres, indicating ATRX/DAXX-dependent H3.3 deposition is required for p53 chromatin access and DNA damage response.\",\n      \"method\": \"ChIP-seq (p53), ATAC-seq, H3.3 and γH2AX ChIP-seq, DAXX/ATRX knockout\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP-seq and ATAC-seq with KO, single lab, mechanistic link via H3.3\",\n      \"pmids\": [\"36028493\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"ATRX binds regulatory elements of cell-cycle phase transition genes in GBM cells; ATRX loss leads to marked reduction in CHEK1 (Checkpoint Kinase 1) expression, causing early release of G2/M entry after irradiation and enhanced ATM activation.\",\n      \"method\": \"ATRX ChIP, ATRX loss-of-function (CRISPR), CHEK1 expression analysis, cell cycle assay post-irradiation, ATM activation assay\",\n      \"journal\": \"Cell reports\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and CRISPR KO with defined cell-cycle readout, single lab\",\n      \"pmids\": [\"35021084\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"Atrx deletion results in downregulation of the cGAS/STING innate immune signaling pathway at multiple points without transcriptional downregulation or mutations in pathway components; Atrx-deleted sarcomas show reduced adaptive immune response and impaired cGAS/STING signaling.\",\n      \"method\": \"Primary mouse sarcoma model (Atrx deletion), gene expression analysis, in vivo tumor treatment assays, immune profiling\",\n      \"journal\": \"The Journal of clinical investigation\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — in vivo mouse model with mechanistic pathway analysis, single lab\",\n      \"pmids\": [\"37200088\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2004,\n      \"finding\": \"C. elegans xnp-1 (ATRX ortholog) and lin-35/Rb function redundantly in somatic gonad development; xnp-1;lin-35 double mutants are sterile with severe defects in sheath and spermatheca lineages, establishing a functional genetic interaction between ATRX and Rb family members.\",\n      \"method\": \"C. elegans genetic epistasis, double-mutant analysis, GFP reporter for xnp-1 expression\",\n      \"journal\": \"Developmental biology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genetic epistasis with defined developmental phenotype, single lab\",\n      \"pmids\": [\"15328017\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"In mammalian oocytes, ATRX binds to centromeric heterochromatin and is required for accurate chromosome segregation during meiosis; loss of ATRX induces abnormal meiotic chromosome morphology, reduces histone H3 phosphorylation at centromeres, and promotes high-incidence aneuploidy associated with severely reduced fertility.\",\n      \"method\": \"ATRX loss-of-function in mouse oocytes, immunofluorescence, chromosome spread analysis, fertility assay\",\n      \"journal\": \"Results and problems in cell differentiation\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — in vivo mouse oocyte model, multiple functional readouts, single lab\",\n      \"pmids\": [\"22918800\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"ATRX is an ATP-dependent SWI/SNF-family chromatin remodeler that, together with its partner DAXX, deposits histone variant H3.3 at pericentromeric heterochromatin, telomeres, and rDNA repeats; it functions as a high-affinity RNA-binding protein that directs PRC2 loading onto Xist RNA and polycomb targets; it binds G-quadruplex DNA structures and recruits DNA methyltransferases to suppress transcription at these sites; it promotes a crossover-prone HR subpathway by interacting with PCNA and RFC-1 to drive DNA repair synthesis downstream of Rad51 removal; it maintains heterochromatin stability at both cellular and viral chromatin under transcriptional stress; it suppresses alternative lengthening of telomeres (ALT); and it regulates cell-cycle checkpoint gene expression, mitotic chromosome cohesion/congression, senescence-associated heterochromatic foci, and innate immune (cGAS/STING) signaling, with loss of any of these activities contributing to genomic instability and cancer.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"ATRX is an ATP-dependent SWI/SNF-family chromatin regulator that maintains heterochromatin integrity at repetitive and structurally challenging genomic loci, with loss of its activities driving genomic instability [#2, #20]. Through its zinc-finger domain it binds double-stranded DNA, and disease-causing ATR-X mutations in this domain abolish DNA binding and impair nuclear localization [#1]. Acting with its partner DAXX, ATRX deposits histone variant H3.3 to establish and maintain repressed chromatin states at rDNA repeats, p53 response elements, and viral genomes, where it restricts chromatin accessibility rather than initiating histone deposition [#14, #21, #23]. ATRX is also a high-affinity RNA-binding protein with RNA-binding regions distinct from its PHD and helicase domains; it directly binds RepA/Xist RNA to load PRC2 in cis and is antagonized at telomeres by TERRA RNA, which competes for ATRX binding and modulates its genome-wide occupancy [#7, #19, #10]. A central activity is the resolution of G-quadruplex structures: ATRX associates with the MCM replication complex and uses its helicase and H3.3-chaperone functions to suppress G4 accumulation at newly synthesized DNA upstream of ESET-mediated heterochromatin formation, and recruits DNA methyltransferases to G4-containing CpG islands to silence target genes [#20, #15]. In DNA repair, ATRX promotes a crossover-prone homologous-recombination subpathway downstream of Rad51 removal, interacting with PCNA and RFC-1 to drive repair synthesis that outcompetes RECQ5-dependent SDSA and generates sister-chromatid exchanges resolved by MUS81/GEN1 [#12, #22]. ATRX additionally ensures accurate mitotic and meiotic chromosome segregation [#2, #27], suppresses alternative lengthening of telomeres [#8], and regulates checkpoint and immune gene expression including CHEK1 and the cGAS/STING pathway [#24, #25]. Mutations in the ATRX DNA-binding domain underlie the ATR-X intellectual disability syndrome [#1].\",\n  \"teleology\": [\n    {\n      \"year\": 1998,\n      \"claim\": \"Established an early physical link between ATRX and the Polycomb machinery, raising the hypothesis that ATRX regulates transcription through chromatin remodeling with PRC2.\",\n      \"evidence\": \"Yeast two-hybrid against the EZH2 SET domain\",\n      \"pmids\": [\"9499421\"],\n      \"confidence\": \"Low\",\n      \"gaps\": [\"Single yeast two-hybrid without biochemical validation of a direct interaction\", \"No functional consequence demonstrated\", \"No cellular localization of the interaction\"]\n    },\n    {\n      \"year\": 2000,\n      \"claim\": \"Defined the zinc-finger domain as ATRX's DNA-binding module and connected its mutation to the ATR-X disease phenotype.\",\n      \"evidence\": \"In vitro DNA binding assays plus immunocytochemistry and western blot in ATR-X patient cells\",\n      \"pmids\": [\"11015451\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Sequence specificity of DNA binding not defined\", \"Link between DNA-binding loss and chromatin function not established\", \"Single lab\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"Demonstrated ATRX is required for faithful mitosis, extending its role from transcription to chromosome segregation.\",\n      \"evidence\": \"Live imaging, RNAi, and a mouse neuroprogenitor genetic model with immunofluorescence\",\n      \"pmids\": [\"18227278\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Molecular basis for cohesion/congression defect not resolved\", \"Direct cohesion machinery partners not identified\"]\n    },\n    {\n      \"year\": 2010,\n      \"claim\": \"Connected ATRX biochemically and genetically to HP1-dependent pericentric heterochromatin assembly, using invertebrate models.\",\n      \"evidence\": \"Co-IP, in vitro ATPase assay, immunolocalization, and PEV genetics in Drosophila (with related C. elegans epistasis)\",\n      \"pmids\": [\"20154359\", \"15649460\", \"19706533\", \"15328017\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct extrapolation to human ATRX isoforms not shown\", \"Mechanism of HP1a stimulation of ATPase not detailed\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Revealed ATRX as a high-affinity RNA-binding protein that directs PRC2 loading onto Xist RNA, defining a non-canonical RNA-guided chromatin function.\",\n      \"evidence\": \"Unbiased proteomics, RNA-IP, ChIP-seq and epigenomic profiling with ATRX KO/KD\",\n      \"pmids\": [\"25417162\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"RNA-binding domain not yet mapped at this stage\", \"How RNA binding integrates with DNA/H3.3 functions unclear\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Provided direct functional evidence that ATRX represses the ALT telomere-maintenance pathway, but only in cooperation with other alterations.\",\n      \"evidence\": \"Transient ATRX re-expression rescue in ALT-positive cells with C-circle/APB assays\",\n      \"pmids\": [\"26001292\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Identity of cooperating alterations needed for ALT not defined\", \"Mechanistic link to H3.3/telomeric chromatin not fully resolved\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Defined ATRX's role in heterochromatin-dependent senescence and identified TERRA as an RNA competitor that restricts ATRX from telomeres.\",\n      \"evidence\": \"ChIRP-seq/RIP/ATRX ChIP and TERRA depletion (telomere study); ChIP, KD/KO and senescence assays with HRAS repression\",\n      \"pmids\": [\"28666128\", \"28855512\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Structural basis of RNA-vs-DNA competition not solved\", \"Direct connection between senescence foci and ALT suppression unclear\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"Established ATRX's role in homologous recombination repair synthesis and extended its chromatin/H3.3 functions to rDNA, imprinted G4 loci, and viral chromatin.\",\n      \"evidence\": \"Co-IP (PCNA/RFC-1), SCE and repair-synthesis assays; H3.3 ChIP at rDNA; G4/CpG ChIP and DNMT recruitment in mouse brain; ATRX/DAXX knockdown in EBV and HSV systems\",\n      \"pmids\": [\"29937341\", \"29669917\", \"29785027\", \"22102817\", \"30465651\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether HR, rDNA, and viral roles share one molecular mechanism not established\", \"NHEJ versus HR balance (cf. PMID 26936505) not reconciled\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Mapped ATRX's RNA-binding regions to the N-terminus, distinct from PHD and helicase domains, and showed RNA binding shapes ATRX chromatin distribution and PRC2 localization.\",\n      \"evidence\": \"In vitro RNA binding, RIP, and ChIP-seq of an ATRX-deltaRBR deletion mutant with PRC2 ChIP-seq\",\n      \"pmids\": [\"32376827\", \"36440760\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Sequence/structure determinants of RBR specificity not resolved\", \"Interplay of RBR with helicase activity not defined\"]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"Integrated ATRX into replication-coupled G-quadruplex resolution and defined a crossover-prone HR subpathway distinct from SDSA.\",\n      \"evidence\": \"Co-IP with MCM, ATRX domain mutants and ESET epistasis with G4 imaging; ATRX/RECQ5/PCNA epistasis with SCE and MUS81/GEN1 dependence; HSV ATAC-seq\",\n      \"pmids\": [\"34162889\", \"33431668\", \"33909709\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Order of events linking G4 unwinding, H3.3 deposition, and ESET methylation not fully resolved\", \"Structure of the ATRX-pathway HR joint molecules not determined\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Connected ATRX/DAXX-dependent H3.3 deposition to p53 chromatin access and checkpoint gene control, linking chromatin function to the DNA damage response.\",\n      \"evidence\": \"p53/H3.3/gammaH2AX ChIP-seq and ATAC-seq with ATRX/DAXX KO; ATRX ChIP and CRISPR KO with CHEK1/cell-cycle readouts\",\n      \"pmids\": [\"36028493\", \"35021084\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct versus indirect effect on p53 binding not separated\", \"Single lab for each finding\"]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"Linked ATRX loss to suppression of cGAS/STING innate immune signaling, connecting its chromatin role to tumor immune evasion.\",\n      \"evidence\": \"Primary Atrx-deleted mouse sarcoma model with gene expression and immune profiling\",\n      \"pmids\": [\"37200088\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Molecular step at which ATRX modulates cGAS/STING not pinpointed\", \"Whether effect is chromatin-mediated not established\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How ATRX's distinct activities — DNA/G4 binding, RNA binding, H3.3 deposition, helicase remodeling, and HR repair synthesis — are coordinated into a single integrated mechanism at specific loci remains unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"No unifying structural/biochemical model integrating ATRX domains\", \"Locus-selectivity determinants between functions unknown\", \"Reconciliation of NHEJ versus HR roles incomplete\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0003677\", \"supporting_discovery_ids\": [1, 15, 18, 20]},\n      {\"term_id\": \"GO:0003723\", \"supporting_discovery_ids\": [7, 10, 19]},\n      {\"term_id\": \"GO:0140657\", \"supporting_discovery_ids\": [4, 20]},\n      {\"term_id\": \"GO:0042393\", \"supporting_discovery_ids\": [11]},\n      {\"term_id\": \"GO:0140096\", \"supporting_discovery_ids\": [12, 14, 21, 23]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [1, 11]},\n      {\"term_id\": \"GO:0005694\", \"supporting_discovery_ids\": [2, 4, 27]},\n      {\"term_id\": \"GO:0005730\", \"supporting_discovery_ids\": [14]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-4839726\", \"supporting_discovery_ids\": [6, 14, 20, 21]},\n      {\"term_id\": \"R-HSA-73894\", \"supporting_discovery_ids\": [12, 22, 23]},\n      {\"term_id\": \"R-HSA-1640170\", \"supporting_discovery_ids\": [2, 24, 27]},\n      {\"term_id\": \"R-HSA-74160\", \"supporting_discovery_ids\": [7, 15, 19]}\n    ],\n    \"complexes\": [\"ATRX/DAXX H3.3 chaperone complex\", \"PRC2 (functional association)\"],\n    \"partners\": [\"DAXX\", \"EZH2\", \"HP1a\", \"PCNA\", \"RFC1\", \"MCM\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":8,"faith_total":8,"faith_pct":100.0}}