{"gene":"ZBTB16","run_date":"2026-04-28T23:00:23","timeline":{"discoveries":[{"year":1998,"finding":"PLZF BTB/POZ domain directly interacts with the mSin3A co-repressor (via PAH1 domain) and HDAC1 in vitro and in vivo, recruiting histone deacetylase activity to mediate transcriptional repression; trichostatin A (TSA) inhibition of HDACs significantly reduces PLZF repression.","method":"Co-immunoprecipitation, in vitro binding assays, TSA inhibitor experiments, reporter gene assays","journal":"Oncogene","confidence":"High","confidence_rationale":"Tier 2 — reciprocal Co-IP in vivo and in vitro, functional inhibitor validation, replicated across multiple labs","pmids":["9627120","9765306"],"is_preprint":false},{"year":1998,"finding":"The PLZF BTB domain forms an obligate homodimer with an extensive hydrophobic interface, revealed at 1.9 Å resolution; a conserved surface-exposed groove at the dimer interface represents the site of interaction with nuclear co-repressors.","method":"X-ray crystallography at 1.9 Å resolution","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 1 — crystal structure with functional interpretation validated by subsequent mutagenesis studies","pmids":["9770450"],"is_preprint":false},{"year":1998,"finding":"PLZF-RARα and PML-RARα both interact with the SMRT co-repressor; however, PLZF-RARα forms RA-insensitive co-repressor complexes via its PLZF moiety, explaining RA resistance in t(11;17) APL. TSA combined with RA can overcome this repression.","method":"Transgenic mouse models, co-repressor interaction assays, TSA treatment experiments","journal":"Nature genetics","confidence":"High","confidence_rationale":"Tier 1-2 — in vivo transgenic model combined with biochemical co-repressor interaction assays, replicated in multiple studies","pmids":["9462740"],"is_preprint":false},{"year":2002,"finding":"Structure-function analysis demonstrated that the charged pocket of the PLZF BTB domain (formed at the dimer interface) is required for transcriptional repression and for direct interaction with N-CoR, SMRT, and HDACs; mutations neutralizing key charged pocket residues abolish co-repressor binding without disrupting dimerization.","method":"Structure-function mutagenesis, co-repressor binding assays with purified proteins, transcriptional reporter assays","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 1 — reconstitution with purified proteins, systematic mutagenesis, structural context from crystal structure","pmids":["11865059"],"is_preprint":false},{"year":1998,"finding":"PLZF interacts with multiple components of the SMRT co-repressor complex including mSin3A and HDAC1; these interactions are non-equivalent between PLZF and BCL-6; the oncogenic PLZF-RARα chimera lacks several co-repressor interaction sites present in native PLZF.","method":"Co-immunoprecipitation, GST pull-down","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 2 — reciprocal Co-IP and pull-down, replicated co-repressor finding across multiple labs","pmids":["9765306"],"is_preprint":false},{"year":2003,"finding":"PLZF directly represses c-myc transcription by binding to the c-myc promoter in vitro and in vivo, reducing RNA polymerase occupancy; c-myc repression mediates PLZF-induced cell cycle arrest, and ectopic c-myc expression reverses this arrest.","method":"Inducible PLZF cell line, microarray, ChIP, reporter assay with mutated binding site, EMSA","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 2 — multiple orthogonal methods (ChIP, reporter with mutant site, rescue by c-myc re-expression)","pmids":["14645547"],"is_preprint":false},{"year":2003,"finding":"PLZF is modified by SUMO-1 conjugation at lysine 242 in the RD2 domain; this sumoylation is required for full transcriptional repression activity, increases DNA binding activity, and is necessary for PLZF-mediated cell cycle regulation and repression of cyclin A2.","method":"Site-directed mutagenesis, EMSA, luciferase reporter assay, cell cycle analysis","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1 — site-directed mutagenesis with multiple functional readouts (DNA binding, transcription, cell cycle)","pmids":["14527952"],"is_preprint":false},{"year":2004,"finding":"PLZF (Zfp145/Plzf) is required in spermatogonial stem cells for self-renewal; loss of Plzf leads to progressive depletion of spermatogonial stem cells, increased apoptosis, and loss of tubule structure without overt differentiation defects.","method":"Knockout mouse (Zfp145-/-), spermatogonial transplantation, microarray analysis of isolated spermatogonia","journal":"Nature genetics","confidence":"High","confidence_rationale":"Tier 2 — clean KO with specific cellular phenotype, spermatogonial transplantation to demonstrate stem cell defect, replicated independently","pmids":["15156143","15156142"],"is_preprint":false},{"year":2007,"finding":"PLZF directly represses Kit transcription by binding a discrete sequence in the kit promoter both in vivo (ChIP) and in vitro; a 3-bp mutation in the PLZF binding site abolishes repression; Kit expression is significantly increased in Plzf-/- undifferentiated spermatogonia.","method":"ChIP, EMSA, reporter assay with mutated binding site, Plzf-/- mouse model","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 1-2 — direct binding shown by ChIP and EMSA, binding site mutation abolishes repression, validated in KO mouse","pmids":["17664282"],"is_preprint":false},{"year":2000,"finding":"Plzf is required for limb and axial skeletal patterning; Plzf inactivation causes homeotic transformations and alters expression of AbdB Hox genes and BMPs in the developing limb bud, acting as a growth-inhibitory and pro-apoptotic factor independently of known patterning genes.","method":"Zfp145-/- knockout mouse, in situ hybridization, gene expression analysis","journal":"Nature genetics","confidence":"High","confidence_rationale":"Tier 2 — clean KO with specific developmental phenotype and defined downstream targets","pmids":["10835630"],"is_preprint":false},{"year":2009,"finding":"PLZF/RARA directly interacts with the Polycomb group protein Bmi-1 and forms a stable component of the PRC1 complex, resulting in RA-insensitive ectopic recruitment of PRC1 to RA response elements; Bmi-1 is essential for PLZF/RARA cellular transformation.","method":"Co-immunoprecipitation, ChIP, Bmi-1 knockdown/KO experiments","journal":"Genes & development","confidence":"High","confidence_rationale":"Tier 2 — reciprocal Co-IP, ChIP demonstrating recruitment, functional validation by Bmi-1 depletion","pmids":["19451220"],"is_preprint":false},{"year":2008,"finding":"PLZF controls a regulatory pathway in megakaryopoiesis: PLZF binds and inhibits the miR-146a promoter, and miR-146a in turn targets CXCR4 mRNA to impede its translation; PLZF suppression of miR-146a thus activates CXCR4 translation to regulate megakaryocytic proliferation and differentiation.","method":"Reporter assays for miR-146a promoter, PLZF knockdown/overexpression, rescue experiments, in vitro megakaryopoiesis cultures","journal":"Nature cell biology","confidence":"High","confidence_rationale":"Tier 2 — pathway established by reporter assay, KD/OE with rescue experiments, multiple orthogonal methods","pmids":["18568019"],"is_preprint":false},{"year":2012,"finding":"During spermatogonial progenitor cell differentiation, Sall4 physically interacts with Plzf, sequesters Plzf to non-cognate chromatin domains to induce Kit expression; Plzf in turn displaces Sall4 from cognate chromatin to induce Sall1 expression, defining a functional antagonism between these factors.","method":"Co-immunoprecipitation, ChIP, gene expression analysis in Sall4/Plzf mutant models","journal":"Cell stem cell","confidence":"High","confidence_rationale":"Tier 2 — reciprocal Co-IP plus ChIP establishing chromatin-level mechanism, validated in genetic models","pmids":["22385656"],"is_preprint":false},{"year":2015,"finding":"ZBTB16 functions as the substrate-recognition subunit of a ZBTB16-Cullin3-Roc1 E3 ubiquitin ligase complex that ubiquitinates Atg14L to promote its proteasomal degradation; GPCR ligand activation regulates Atg14L levels and autophagy through this ZBTB16-dependent mechanism.","method":"Co-immunoprecipitation, ubiquitination assays, proteasomal degradation experiments, mouse model of Huntington's disease","journal":"eLife","confidence":"High","confidence_rationale":"Tier 2 — Co-IP of complex components, in vitro ubiquitination, functional validation in disease model","pmids":["25821988"],"is_preprint":false},{"year":2015,"finding":"Let-7 miRNAs directly target Zbtb16 mRNA to post-transcriptionally downregulate PLZF expression during NKT cell development; IL-15, vitamin D, and retinoic acid signal upregulation of let-7 miRNAs, which direct terminal differentiation into IFN-γ-producing NKT1 cells.","method":"miRNA target validation, let-7 overexpression/knockdown, NKT cell developmental analysis in transgenic mice","journal":"Nature immunology","confidence":"High","confidence_rationale":"Tier 2 — direct miRNA target validation, in vivo genetic model with defined developmental outcome","pmids":["25848867"],"is_preprint":false},{"year":2015,"finding":"TLR/TNF-α signaling triggers CaMK2 to activate HAT1, which then acetylates PLZF; acetylation of PLZF promotes assembly of a repressor complex incorporating HDAC3 and NF-κB p50 subunit to limit NF-κB transcriptional responses.","method":"Kinase activation assays, acetyltransferase assays, Co-IP of repressor complex, site-directed mutagenesis of acetylation sites, inflammatory cytokine readouts","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 1-2 — defined PTM writer (HAT1/CaMK2), reconstituted complex, mutagenesis of key residues with functional consequence","pmids":["25865065"],"is_preprint":false},{"year":2015,"finding":"PLZF establishes basal repressive chromatin states at early response inflammatory genes by stabilizing a co-repressor complex with histone deacetylase activity; PLZF-deficient animals show exaggerated inflammatory cytokine responses.","method":"Genome-wide histone modification analysis (ChIP-seq), PLZF-KO mouse, temporal quantitation of inflammatory gene transcripts","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 — genome-wide ChIP-seq, clean KO with defined inflammatory phenotype","pmids":["25605927"],"is_preprint":false},{"year":2003,"finding":"PLZF directly represses CRABPI through propagation of chromatin condensation from a remote intronic binding element to silence the promoter; the reciprocal RARα-PLZF product binds this remote site, recruits p300, induces promoter hypomethylation and CRABPI gene upregulation.","method":"ChIP, reporter assays, chromatin analysis, cell line differentiation experiments","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 — ChIP demonstrating remote-to-promoter epigenetic spread, functional reporter assays, validated in APL patient cells","pmids":["18000064"],"is_preprint":false},{"year":2009,"finding":"ERK1/2 activation by myeloid cytokines (stress response) causes nuclear export and inactivation of PLZF in human cord blood myeloid progenitors; PLZF represses transcription factors GFI-1, C/EBPα, and LEF-1, and induces negative regulators DUSP6 and ID2; loss of ID2 is a functional target that relieves PLZF-mediated repression of differentiation.","method":"PLZF promoter binding site analysis, ID2 knockdown rescue experiments, ERK activation assays, fractionation for nuclear export","journal":"Genes & development","confidence":"High","confidence_rationale":"Tier 2 — epistasis via ID2 knockdown rescue, subcellular fractionation, multiple target gene analyses","pmids":["19723763"],"is_preprint":false},{"year":2012,"finding":"PLZF controls expression of a defined set of immune genes in NKT cells including c-Maf (which shapes cytokine profile) and Id2; ectopic c-Maf expression complemented the IL-4/IL-10 production defect in PLZF-deficient NKT cells.","method":"PLZF-KO mouse analysis, gene expression profiling, ectopic c-Maf expression rescue experiments","journal":"Frontiers in immunology","confidence":"Medium","confidence_rationale":"Tier 2 — KO with defined targets plus rescue by c-Maf; single lab","pmids":["23267359"],"is_preprint":false},{"year":2016,"finding":"ChIP-seq in mouse THY1+ spermatogonia identified PLZF preferentially binding gene promoters (4176 bound genes) while SALL4 preferentially bound introns; PLZF and SALL4 share 1295 target genes but motif analysis showed they occupy shared sites largely non-autonomously via PLZF motifs; KD of either factor suppresses mRNA levels of unique and shared targets.","method":"ChIP-seq, motif analysis, siRNA knockdown, RNA-seq","journal":"Development (Cambridge, England)","confidence":"High","confidence_rationale":"Tier 2 — genome-wide ChIP-seq with functional KD validation in primary cells","pmids":["27068105"],"is_preprint":false},{"year":2016,"finding":"ChIP-seq and microarray of NKT cells and PLZF-transgenic thymocytes revealed that PLZF: (1) directly binds and regulates cytokine and homing receptor genes; (2) activates T-helper-specific transcription factor genes; (3) binds and suppresses Bach2, a repressor of effector differentiation.","method":"Biotinylation-based ChIP-seq, microarray, PLZF-transgenic thymocytes","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 — genome-wide ChIP-seq with expression profiling in multiple model systems","pmids":["27325774"],"is_preprint":false},{"year":2003,"finding":"PLZF physically interacts with the RAR ligand-binding domain in a ligand-independent manner via its N-terminal zinc finger domain; this interaction inhibits RXR-RAR heterodimerization both in vitro and in intact cells, leading to decreased RAR transcriptional activity.","method":"Yeast two-hybrid, GST pull-down, co-immunoprecipitation, reporter assays, heterodimerization assay","journal":"Nuclear receptor","confidence":"High","confidence_rationale":"Tier 1-2 — multiple biochemical assays establishing direct interaction and mechanism","pmids":["14521715"],"is_preprint":false},{"year":2008,"finding":"PLZF is SUMOylated at K242; the same residue can alternatively be ubiquitinated; oxidative stress (ROS from serum deprivation) inactivates SUMO-conjugating enzymes Uba2/Ubc9, shifting modification from SUMO to ubiquitin, destabilizing PLZF and inducing apoptosis via reduced BID repression.","method":"Site-directed mutagenesis, immunoprecipitation, stability assays, ROS measurement","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 2 — extends prior sumoylation finding; single lab, single paper","pmids":["18348865"],"is_preprint":false},{"year":2012,"finding":"The deubiquitinase USP37 interacts with PLZF/RARA through the PLZF moiety and stabilizes PLZF/RARA by reducing its poly-ubiquitination; USP37 knockdown decreases PLZF/RARA half-life, alleviates target gene suppression, and reduces cell transformation potential.","method":"RNAi screen, Co-IP, domain mapping, protein half-life assays, ubiquitination assays, primary hematopoietic progenitor transduction","journal":"Oncogene","confidence":"High","confidence_rationale":"Tier 2 — RNAi screen followed by multiple orthogonal validation methods including functional transformation assay","pmids":["23208507"],"is_preprint":false},{"year":2021,"finding":"PLZF/ZBTB16 is a neosubstrate of the CRL4CRBN ubiquitin ligase; thalidomide and 5-hydroxythalidomide promote CRBN-dependent degradation of PLZF in a manner dependent on the first and third zinc finger domains; PLZF degradation underlies thalidomide-induced limb teratogenicity.","method":"Human transcription factor protein array, cell-free protein synthesis system, ubiquitination assays, chicken embryo knockdown/overexpression, xenograft assays","journal":"The EMBO journal","confidence":"High","confidence_rationale":"Tier 1-2 — identified by unbiased array, validated with in vitro ubiquitination, ZF domain mutagenesis, in vivo rescue","pmids":["33470442"],"is_preprint":false},{"year":2020,"finding":"Cereblon modulators CC-3060 and CC-647 target ZBTB16 for proteasomal degradation through distinct structural degrons on different zinc finger domains; the same degrons are present in the ZBTB16-RARα and RARα-ZBTB16 fusion oncoproteins, which can also be degraded by these compounds.","method":"Targeted protein degradation assays, domain mapping, proteasome inhibitor experiments, structural degron identification","journal":"ACS chemical biology","confidence":"High","confidence_rationale":"Tier 2 — systematic domain mapping with two distinct modulators and functional degradation assays","pmids":["33206504"],"is_preprint":false},{"year":2013,"finding":"PLZF represses L1 retrotransposons by inducing DNA methylation at full-length L1 sequences, inhibiting L1 retrotransposition; PLZF also forms barrier-type boundaries by acting on truncated L1 sequences inserted in protein-coding genes; cell stress releases PLZF-mediated repression, leading to L1 activation.","method":"ChIP, bisulfite sequencing, L1 retrotransposition assay, PLZF KO/KD in germ and progenitor cells","journal":"The EMBO journal","confidence":"High","confidence_rationale":"Tier 2 — direct demonstration of DNA methylation induction, retrotransposition assay, genetic validation","pmids":["23727884"],"is_preprint":false},{"year":2009,"finding":"PLZF directly interacts with the (pro)renin receptor [(P)RR] and translocates to the nucleus upon renin stimulation, where it represses (P)RR itself and induces PI3K-p85α, leading to increased proliferation and decreased apoptosis.","method":"Protein-protein interaction assays, nuclear translocation studies, gene expression analysis","journal":"Journal of molecular medicine (Berlin, Germany)","confidence":"Medium","confidence_rationale":"Tier 3 — described as protein-protein interaction with nuclear translocation; mechanistic details primarily from review context","pmids":["18335187"],"is_preprint":false},{"year":2015,"finding":"PLZF acts as a transcriptional activator of CCR6 in human Th17 cells by binding enhancer-like sites at -9/-10 and -13/-14 kb from the CCR6 upstream TSS; PLZF and RORC cross-regulate each other, and PLZF binds the RORC promoter.","method":"ChIP for modified histones, p300, and PLZF; siRNA knockdown; gene expression analysis in primary human T cells","journal":"Journal of immunology (Baltimore, Md. : 1950)","confidence":"High","confidence_rationale":"Tier 2 — ChIP with multiple marks, KD validation in primary cells, binding at RORC promoter","pmids":["25833398"],"is_preprint":false},{"year":2017,"finding":"A critical enhancer within the Zbtb16 locus, identified by CRISPR/Cas9 deletions, controls PLZF expression exclusively in innate lymphoid lineages; multiple Runx1-binding canonical motif sites within this enhancer are essential, with some controlling kinetics rather than overall levels of PLZF expression.","method":"Systematic CRISPR/Cas9-assisted enhancer deletions in vivo, ATAC-seq, ChIP-seq","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 — systematic in vivo CRISPR deletion with ATAC-seq and ChIP-seq validation","pmids":["29038474"],"is_preprint":false},{"year":2018,"finding":"PLZF co-occupies chromatin with EZH2 at PLZF target genes independently of SUZ12 and H3K27me3 (PRC2), but associated with active H3K4me3 marks; removal of EZH2 increases PLZF binding and gene expression, revealing a non-canonical role of EZH2 in restricting PLZF positive transcriptional activity.","method":"ChIP-seq, EZH2 depletion, histone modification analysis","journal":"Nucleic acids research","confidence":"Medium","confidence_rationale":"Tier 2 — ChIP-seq with genetic perturbation; single lab","pmids":["29425303"],"is_preprint":false},{"year":2023,"finding":"ZBTB16 promotes SUMOylation of ASC (apoptosis-associated speck-like protein containing a CARD) to control inflammasome assembly; ablation of ZBTB16 reduces hyperactive inflammasome pathogenesis in a mouse model of Muckle-Wells syndrome.","method":"SUMOylation assays, Co-IP, ZBTB16 knockout mouse, Muckle-Wells syndrome model","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 — defined PTM (SUMOylation of ASC), reciprocal Co-IP, in vivo genetic validation in disease model","pmids":["38123560"],"is_preprint":false},{"year":2000,"finding":"LAZ3 (BCL-6) and PLZF directly interact via yeast two-hybrid, in vitro immunoprecipitation, and GST pull-down; heteromerization involves POZ/POZ contacts plus cross-contacts between zinc finger regions and POZ domains of each partner; the two proteins colocalize at nuclear dots.","method":"Yeast two-hybrid, in vitro immunoprecipitation, GST pull-down, immunofluorescence","journal":"Oncogene","confidence":"High","confidence_rationale":"Tier 2 — multiple orthogonal interaction assays with domain mapping","pmids":["11175338"],"is_preprint":false},{"year":2013,"finding":"PLZF elevates FGFR3 expression and STAT3 pathway activity in neural progenitors, suppresses neurogenesis, and biases progenitors towards glial cell production; PLZF loss reduces FGFR3 levels and causes premature neuronal differentiation.","method":"PLZF overexpression/loss-of-function in spinal cord progenitors, FGFR3 expression assays, STAT3 pathway activation measurements","journal":"PLoS biology","confidence":"High","confidence_rationale":"Tier 2 — gain-of-function and loss-of-function with defined molecular pathway and cellular phenotype","pmids":["24115909"],"is_preprint":false},{"year":2013,"finding":"Hox5 proteins interact biochemically and genetically with PLZF to restrict Shh expression in the developing forelimb; loss of all three Hox5 genes (Hoxa5, Hoxb5, Hoxc5) combined with Plzf loss leads to anterior forelimb defects from Shh derepression.","method":"Genetic epistasis (compound mutant mice), biochemical interaction assays","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 — genetic epistasis in vivo plus biochemical interaction","pmids":["24218595"],"is_preprint":false},{"year":2005,"finding":"Gli3 and Plzf cooperate genetically to establish proximal limb patterning; Gli3-/-;Plzf-/- double mutants show loss of all proximal hindlimb cartilage condensations with death of Bmpr1b-expressing proximal mesenchymal cells, while distal condensations are relatively unperturbed.","method":"Double-mutant mouse genetic epistasis, in situ hybridization, cell death analysis","journal":"Nature","confidence":"High","confidence_rationale":"Tier 2 — clean double-KO genetic epistasis with specific cellular and molecular phenotype","pmids":["16015334"],"is_preprint":false},{"year":2019,"finding":"PLZF regulates proliferative activity of EOMES+ spermatogonial stem cells; in Plzf-null mice, EOMES+ SSCs have higher proliferation index, suggesting PLZF restrains their proliferative activity to prevent exhaustion.","method":"GDNF transgenic model, lineage tracing, busulfan challenge, RNAseq, scRNA-seq","journal":"eLife","confidence":"Medium","confidence_rationale":"Tier 2 — multiple genetic tools and sequencing approaches; proliferative mechanism inferred from comparative analysis","pmids":["31149899"],"is_preprint":false},{"year":2013,"finding":"Znf179 directly interacts with Plzf (first two zinc fingers of Plzf are critical for interaction); Znf179 co-expression changes its own localization from cytoplasm to nucleus and increases Plzf protein abundance, though Plzf transcriptional repressor activity is unaffected in Gal4-dependent assays.","method":"Yeast two-hybrid, co-immunoprecipitation, domain mapping, subcellular localization analysis","journal":"Journal of biomedical science","confidence":"Low","confidence_rationale":"Tier 3 — Co-IP and yeast two-hybrid, single lab, mechanistic consequence unclear","pmids":["24359566"],"is_preprint":false},{"year":2009,"finding":"Nuclear LYRIC/AEG-1 interacts with PLZF (via N- and C-termini of LYRIC and C-terminal to RD2 of PLZF); co-expression of LYRIC/AEG-1 reduces PLZF-mediated repression by decreasing PLZF binding to target promoters; both proteins colocalize to nuclear bodies containing HDACs.","method":"Yeast two-hybrid, co-immunoprecipitation in mammalian cells, ChIP, immunofluorescence colocalization","journal":"Oncogene","confidence":"Medium","confidence_rationale":"Tier 2-3 — multiple interaction assays with functional consequence (ChIP showing reduced PLZF binding); single lab","pmids":["19648967"],"is_preprint":false},{"year":2019,"finding":"REGγ proteasome activator loss increases p53 protein abundance in testis; p53 directly represses PLZF transcription, leading to decreased PLZF+ spermatogonia; partial p53 haplodeficiency rescues spermatogenesis defects in REGγ-null mice, establishing a REGγ-p53-PLZF pathway.","method":"REGγ knockout mouse, p53 haplodeficiency rescue (epistasis), p53-PLZF transcriptional repression in cell lines","journal":"Stem cell reports","confidence":"High","confidence_rationale":"Tier 2 — genetic epistasis with haplodeficiency rescue plus direct transcriptional repression assay","pmids":["31402338"],"is_preprint":false},{"year":2016,"finding":"ZBTB16 acts downstream of Osterix (Osx) in osteoblastogenesis; ChIP assay showed Osx directly binds the ZBTB16 promoter at GC-rich Sp1 sequences; ZBTB16 silencing reduces alkaline phosphatase activity, osteocalcin/bone sialoprotein expression, and mineralized nodule formation; ZBTB16 overexpression induces osteogenic gene expression changes.","method":"ChIP assay, siRNA knockdown, transient transfection overexpression, ALP assay, Alizarin Red staining, microarray","journal":"Journal of cellular biochemistry","confidence":"Medium","confidence_rationale":"Tier 2 — ChIP plus KD/OE with functional readouts; single lab","pmids":["27335174"],"is_preprint":false},{"year":2024,"finding":"Glucocorticoids increase basal progenitors co-expressing PAX6 and EOMES via ZBTB16 in human cerebral organoids and mice, leading to increased neuron production; a ZBTB16 enhancer variant that moderates glucocorticoid-induced ZBTB16 levels causally affects educational attainment and brain structure.","method":"Human cerebral organoids, ZBTB16 KO/OE, Mendelian randomization, prospective pregnancy cohort","journal":"Neuron","confidence":"Medium","confidence_rationale":"Tier 2 — genetic and organoid evidence; ZBTB16 mediates glucocorticoid effect on progenitor expansion, single lab","pmids":["38442714"],"is_preprint":false},{"year":2020,"finding":"KDM5B inhibits ZBTB16 expression by directly reducing H3K4me3 at the ZBTB16 promoter; loss of ZBTB16 then increases TOP2A expression to confer cisplatin resistance; USP7 stabilizes KDM5B by deubiquitination, thereby indirectly regulating the ZBTB16/TOP2A axis.","method":"ChIP-H3K4me3 at ZBTB16 promoter, siRNA knockdown/overexpression, in vitro and in vivo tumor assays","journal":"Cell death and differentiation","confidence":"Medium","confidence_rationale":"Tier 2 — direct ChIP evidence for epigenetic regulation of ZBTB16 promoter, functional downstream pathway; single lab","pmids":["38287116"],"is_preprint":false},{"year":2013,"finding":"PLZF directly binds the HOXB7 locus and regulates Hox gene expression in the developing limb; Plzf-/- limb buds show anterior expansion of Hoxd10-13 expression domains in the absence of ectopic Sonic hedgehog, and a 2,964-bp intronic deletion reducing Plzf expression recapitulates this (polydactyly).","method":"In situ hybridization, quantitative RT-PCR, linkage mapping, conserved noncoding element deletion analysis","journal":"Developmental dynamics","confidence":"Medium","confidence_rationale":"Tier 2 — in vivo genetic model with expression analysis; cis-regulatory mechanism inferred","pmids":["19191224"],"is_preprint":false},{"year":2023,"finding":"Super enhancers recruit BRD4 to the ZBTB16 locus, which then binds RPAP2 to transport RNA Pol II into the nucleus; BRD4 and RPAP2 synergistically regulate Pol II CTD phosphorylation (BRD4 phosphorylates Ser2, RPAP2 dephosphorylates Ser5) to initiate ZBTB16 transcriptional elongation during MSC osteogenesis.","method":"ChIP-seq, ATAC-seq, BRD4 inhibition, bone-targeting ZBTB16 overexpression in Brd4fl/fl Prx1-cre mice, OP models","journal":"Bone research","confidence":"Medium","confidence_rationale":"Tier 2 — mechanistic dissection of SE-BRD4-RPAP2-PolII cascade regulating ZBTB16; single lab but multiple approaches","pmids":["37280207"],"is_preprint":false},{"year":2011,"finding":"PLZF activates REDD1 transcription, which mediates PLZF-dependent downregulation of TORC1 and maintenance of pluripotency in spermatogonial progenitor cells; PLZF also represses smooth muscle α-actin transcription, reorganizing the cytoskeleton and conferring resistance to oncogenic transformation.","method":"Target gene identification, TORC1 activity assay, cytoskeletal analysis, oncogenic transformation assays","journal":"Cell cycle (Georgetown, Tex.)","confidence":"Medium","confidence_rationale":"Tier 3 — review summarizing experimental findings from direct target studies; mechanistic interpretation strong but review format","pmids":["21311223"],"is_preprint":false}],"current_model":"ZBTB16/PLZF is a BTB-ZF transcriptional repressor (and sometimes activator) that recruits histone deacetylase-containing co-repressor complexes (mSin3A/HDAC1, N-CoR/SMRT) via a conserved charged pocket in its obligate homodimeric BTB domain; it directly binds target gene promoters (c-myc, Kit, CRABPI, CCR6, miR-146a) to regulate stem cell self-renewal, innate immune cell differentiation, megakaryopoiesis, and inflammatory responses, while additionally functioning as the substrate-recognition subunit of a CRL3/Cullin3-Roc1 E3 ubiquitin ligase targeting Atg14L and as a promoter of ASC SUMOylation to control inflammasome activity; its activity is post-translationally regulated by SUMO-1 conjugation (K242, enhancing repression), ubiquitination (promoting degradation), HAT1-mediated acetylation (promoting NF-κB repressor complex assembly), and by cereblon-dependent ubiquitination induced by thalidomide/IMiD compounds."},"narrative":{"teleology":[{"year":1998,"claim":"Establishing that PLZF represses transcription by directly recruiting histone deacetylase machinery resolved how this BTB-ZF protein silences target genes and explained the retinoic acid resistance of t(11;17) APL.","evidence":"Co-IP, in vitro binding, TSA inhibitor experiments, and reporter assays in cell lines; transgenic APL mouse models with SMRT interaction assays","pmids":["9627120","9765306","9462740"],"confidence":"High","gaps":["Identity of direct genomic targets was not yet established","Whether PLZF can activate transcription was unknown","The contribution of individual co-repressor complexes (N-CoR vs. mSin3A) to specific biological processes remained unclear"]},{"year":1998,"claim":"The crystal structure of the BTB domain revealed obligate homodimerization and a surface-exposed groove at the dimer interface, providing the structural basis for co-repressor recruitment.","evidence":"X-ray crystallography at 1.9 Å resolution","pmids":["9770450"],"confidence":"High","gaps":["No co-crystal with a co-repressor peptide was obtained","How zinc finger domains contribute to target specificity was structurally undefined"]},{"year":2000,"claim":"Loss-of-function in mice revealed PLZF as a patterning factor controlling limb and axial skeleton development through Hox gene and BMP regulation, establishing its first in vivo developmental role.","evidence":"Zfp145−/− knockout mouse with in situ hybridization and gene expression analysis","pmids":["10835630"],"confidence":"High","gaps":["Direct DNA binding sites in Hox loci were not mapped","Relationship to other limb patterning transcription factors was unclear"]},{"year":2002,"claim":"Structure-function mutagenesis of the BTB charged pocket demonstrated that specific residues are required for co-repressor binding without disrupting dimerization, separating the structural and functional requirements of the BTB domain.","evidence":"Reconstituted binding assays with purified proteins and systematic point mutants, transcriptional reporter assays","pmids":["11865059"],"confidence":"High","gaps":["Whether the charged pocket is the sole co-repressor interface was not excluded","No atomic-resolution co-complex structure was determined"]},{"year":2003,"claim":"Identification of c-myc, cyclin A2, and CRABPI as direct transcriptional targets, together with the discovery that SUMO-1 modification at K242 enhances DNA binding and repression, linked PLZF to cell cycle control and defined its first activating post-translational modification.","evidence":"ChIP, EMSA, reporter assays with mutated binding sites, site-directed mutagenesis of K242, cell cycle analysis","pmids":["14645547","14527952","18000064"],"confidence":"High","gaps":["The SUMO E3 ligase responsible was not identified","Whether SUMO modification affects co-repressor recruitment was untested","Genome-wide target repertoire was unknown"]},{"year":2004,"claim":"Demonstration that Plzf is essential for spermatogonial stem cell self-renewal established the gene's role as a stem cell maintenance factor, with progressive germ cell depletion upon loss.","evidence":"Zfp145−/− knockout mice, spermatogonial transplantation assays, microarray of isolated spermatogonia","pmids":["15156143","15156142"],"confidence":"High","gaps":["Direct transcriptional targets mediating self-renewal were not identified","Whether PLZF acts cell-autonomously in SSCs was not formally shown"]},{"year":2005,"claim":"Genetic epistasis with Gli3 showed cooperative control of proximal limb patterning, positioning PLZF within a broader signaling network for appendicular skeletal development.","evidence":"Gli3−/−;Plzf−/− double-mutant mice with cartilage condensation and cell death analysis","pmids":["16015334"],"confidence":"High","gaps":["Whether PLZF and Gli3 physically interact or converge on shared targets was unknown","The downstream effectors in proximal mesenchyme were not defined"]},{"year":2007,"claim":"Direct binding and repression of Kit by PLZF in spermatogonia, validated by binding-site mutation and knockout, provided a molecular mechanism for how PLZF maintains the undifferentiated state of germ cells.","evidence":"ChIP, EMSA, reporter assay with 3-bp binding-site mutation, Plzf−/− mouse model","pmids":["17664282"],"confidence":"High","gaps":["Whether Kit derepression alone is sufficient for differentiation was not tested","Other direct targets maintaining SSC identity remained uncharacterized"]},{"year":2008,"claim":"Discovery that K242 undergoes competitive SUMO-ubiquitin switching under oxidative stress, and that PLZF regulates miR-146a/CXCR4 in megakaryopoiesis, extended the regulatory logic to PTM-dependent protein stability and microRNA-mediated gene circuits.","evidence":"Site-directed mutagenesis and stability assays for SUMO/Ub switching; reporter assays, KD/OE with rescue for miR-146a pathway","pmids":["18348865","18568019"],"confidence":"High","gaps":["The ubiquitin E3 ligase targeting K242 was not identified","Whether SUMO/Ub switching operates in vivo under physiological stress was unconfirmed"]},{"year":2009,"claim":"ERK-dependent nuclear export of PLZF in myeloid progenitors and interaction of PLZF-RARA with Polycomb (PRC1/Bmi-1) revealed signal-dependent inactivation and epigenetic co-opting mechanisms central to normal differentiation and leukemogenesis.","evidence":"Subcellular fractionation, ID2 knockdown rescue, Co-IP of PLZF-RARA with Bmi-1, ChIP at RA response elements, Bmi-1 KO","pmids":["19723763","19451220"],"confidence":"High","gaps":["The kinase(s) directly phosphorylating PLZF for export were not mapped","Whether wild-type PLZF also engages PRC1 was not determined"]},{"year":2012,"claim":"Physical and functional antagonism between PLZF and SALL4 on shared chromatin targets in spermatogonia, and identification of USP37 as a deubiquitinase stabilizing PLZF-RARA, clarified how PLZF activity is modulated by protein partners and turnover.","evidence":"Reciprocal Co-IP, ChIP in Sall4/Plzf mutants; RNAi screen, ubiquitination and half-life assays for USP37","pmids":["22385656","23208507"],"confidence":"High","gaps":["Whether SALL4 antagonism operates outside germ cells was unknown","USP37 relevance to wild-type PLZF (not just fusion) was not shown"]},{"year":2013,"claim":"PLZF was shown to repress L1 retrotransposons by inducing DNA methylation and to cooperate with Hox5 proteins to restrict Shh expression, broadening its role to genome defense and morphogen regulation.","evidence":"ChIP, bisulfite sequencing, L1 retrotransposition assay, compound Hox5/Plzf mutant mice","pmids":["23727884","24218595"],"confidence":"High","gaps":["The DNA methyltransferase recruited by PLZF was not identified","Whether PLZF-dependent L1 silencing operates in somatic tissues was untested"]},{"year":2015,"claim":"Three convergent discoveries — PLZF as a CRL3 E3 ligase adaptor ubiquitinating Atg14L, HAT1-mediated acetylation assembling an NF-κB repressor complex, and genome-wide establishment of repressive chromatin at inflammatory genes — revealed non-transcriptional and anti-inflammatory effector functions.","evidence":"Co-IP and ubiquitination assays for CRL3-Atg14L; acetyltransferase assays, mutagenesis, Co-IP for HAT1-PLZF-HDAC3-p50; ChIP-seq and Plzf-KO inflammatory phenotyping","pmids":["25821988","25865065","25605927"],"confidence":"High","gaps":["Whether CRL3-PLZF has additional ubiquitination substrates beyond Atg14L was unknown","The acetylation sites on PLZF were not fully mapped","Whether anti-inflammatory and E3 ligase functions operate in the same cell types was untested"]},{"year":2016,"claim":"Genome-wide ChIP-seq in spermatogonia and NKT cells mapped thousands of PLZF binding sites, showing preferential promoter occupancy, co-regulation with SALL4, and direct activation of T-helper programs including Bach2 suppression, providing a comprehensive target landscape.","evidence":"ChIP-seq, RNA-seq, microarray, siRNA KD in spermatogonia; biotinylation ChIP-seq in PLZF-transgenic thymocytes","pmids":["27068105","27325774"],"confidence":"High","gaps":["A consensus DNA-binding motif for PLZF zinc fingers was not structurally resolved","Functional validation of most ChIP-seq targets was lacking"]},{"year":2020,"claim":"Identification of PLZF/ZBTB16 as a cereblon neosubstrate degraded by thalidomide and IMiD compounds, dependent on the first and third zinc fingers, established the molecular basis of thalidomide-induced limb teratogenicity.","evidence":"Protein array screen, cell-free ubiquitination, ZF domain mutagenesis, chicken embryo rescue; targeted degradation assays with CC-3060/CC-647","pmids":["33470442","33206504"],"confidence":"High","gaps":["Whether PLZF degradation alone is sufficient for all teratogenic effects was not fully resolved","Structural basis of CRBN-ZF interaction was not determined at atomic resolution"]},{"year":2023,"claim":"ZBTB16 was found to promote ASC SUMOylation, controlling inflammasome assembly; ablation of ZBTB16 ameliorated inflammasome-driven pathology in Muckle-Wells syndrome, linking PLZF to innate immune inflammasome regulation.","evidence":"SUMOylation assays, Co-IP, ZBTB16 KO in Muckle-Wells mouse model","pmids":["38123560"],"confidence":"High","gaps":["Whether PLZF directly acts as a SUMO E3 ligase or recruits one was not determined","The generalizability to other inflammasome-driven diseases was untested"]},{"year":null,"claim":"The structural basis of PLZF zinc finger-DNA recognition, the full catalog of CRL3-PLZF ubiquitination substrates, and the mechanism by which PLZF switches between repressor and activator modes remain undefined.","evidence":"","pmids":[],"confidence":"Low","gaps":["No co-crystal structure of zinc fingers with a DNA target exists","Systematic identification of CRL3-PLZF substrates has not been performed","How context determines repression versus activation is mechanistically unresolved"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[0,3,5,6,8,15,16,17,21,29]},{"term_id":"GO:0003677","term_label":"DNA binding","supporting_discovery_ids":[5,6,8,17,20,21,27,29]},{"term_id":"GO:0140096","term_label":"catalytic activity, acting on a protein","supporting_discovery_ids":[13,32]},{"term_id":"GO:0098772","term_label":"molecular function regulator activity","supporting_discovery_ids":[15,22,32]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[1,5,6,17,20,21,33]},{"term_id":"GO:0005694","term_label":"chromosome","supporting_discovery_ids":[20,21,31]}],"pathway":[{"term_id":"R-HSA-74160","term_label":"Gene expression (Transcription)","supporting_discovery_ids":[0,3,5,6,8,15,16,17,21,29]},{"term_id":"R-HSA-4839726","term_label":"Chromatin organization","supporting_discovery_ids":[16,17,27,31]},{"term_id":"R-HSA-168256","term_label":"Immune System","supporting_discovery_ids":[14,19,21,29,32]},{"term_id":"R-HSA-1266738","term_label":"Developmental Biology","supporting_discovery_ids":[7,9,35,36,42]},{"term_id":"R-HSA-9612973","term_label":"Autophagy","supporting_discovery_ids":[13]},{"term_id":"R-HSA-392499","term_label":"Metabolism of proteins","supporting_discovery_ids":[13,24,25,26]},{"term_id":"R-HSA-162582","term_label":"Signal Transduction","supporting_discovery_ids":[15,18,34]},{"term_id":"R-HSA-1643685","term_label":"Disease","supporting_discovery_ids":[2,10,25]}],"complexes":["N-CoR/SMRT co-repressor complex","mSin3A/HDAC1 co-repressor complex","CRL3 (Cullin3-Roc1) E3 ubiquitin ligase"],"partners":["NCOR1","NCOR2","SIN3A","HDAC1","CUL3","SALL4","BCL6","CRBN"],"other_free_text":[]},"mechanistic_narrative":"ZBTB16 (PLZF) is a BTB/POZ-zinc finger transcription factor that functions as a master regulator of stem cell self-renewal, innate immune cell differentiation, limb patterning, and inflammatory gene control, acting primarily as a transcriptional repressor but also as a context-dependent activator. Its BTB domain forms an obligate homodimer whose charged pocket recruits N-CoR/SMRT and mSin3A/HDAC1 co-repressor complexes to directly silence target promoters including c-myc, Kit, CRABPI, and early inflammatory response genes, while it activates CCR6 and REDD1 in specific immune and germ cell contexts [PMID:9627120, PMID:11865059, PMID:14645547, PMID:17664282, PMID:25605927, PMID:25833398]. ZBTB16 activity is post-translationally tuned by SUMO-1 conjugation at K242 (enhancing DNA binding and repression), competitive ubiquitination at the same residue (promoting degradation under oxidative stress), HAT1-mediated acetylation (assembling an NF-κB-repressive HDAC3 complex), and cereblon-dependent degradation induced by thalidomide/IMiD compounds, which underlies thalidomide teratogenicity [PMID:14527952, PMID:18348865, PMID:25865065, PMID:33470442]. Beyond transcription, ZBTB16 serves as the substrate-recognition subunit of a Cullin3-Roc1 E3 ubiquitin ligase targeting Atg14L for proteasomal degradation to regulate autophagy, and promotes ASC SUMOylation to control inflammasome assembly [PMID:25821988, PMID:38123560]."},"prefetch_data":{"uniprot":{"accession":"Q05516","full_name":"Zinc finger and BTB domain-containing protein 16","aliases":["Promyelocytic leukemia zinc finger protein","Zinc finger protein 145","Zinc finger protein PLZF"],"length_aa":673,"mass_kda":74.3,"function":"Acts as a transcriptional repressor (PubMed:10688654, PubMed:24359566). Transcriptional repression may be mediated through recruitment of histone deacetylases to target promoters (PubMed:10688654). May play a role in myeloid maturation and in the development and/or maintenance of other differentiated tissues. Probable substrate-recognition component of an E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins (PubMed:14528312)","subcellular_location":"Nucleus; Nucleus, nuclear body","url":"https://www.uniprot.org/uniprotkb/Q05516/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/ZBTB16","classification":"Not Classified","n_dependent_lines":4,"n_total_lines":1208,"dependency_fraction":0.0033112582781456954},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[],"url":"https://opencell.sf.czbiohub.org/search/ZBTB16","total_profiled":1310},"omim":[{"mim_id":"612447","title":"SKELETAL DEFECTS, GENITAL HYPOPLASIA, AND IMPAIRED INTELLECTUAL DEVELOPMENT","url":"https://www.omim.org/entry/612447"},{"mim_id":"612116","title":"UBIQUITIN-SPECIFIC PROTEASE 22; USP22","url":"https://www.omim.org/entry/612116"},{"mim_id":"610323","title":"METADHERIN; MTDH","url":"https://www.omim.org/entry/610323"},{"mim_id":"606599","title":"THIOREDOXIN-INTERACTING PROTEIN; TXNIP","url":"https://www.omim.org/entry/606599"},{"mim_id":"606025","title":"ZINC FINGER- AND BTB DOMAIN-CONTAINING PROTEIN 20; ZBTB20","url":"https://www.omim.org/entry/606025"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"","locations":[],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in many","driving_tissues":[],"url":"https://www.proteinatlas.org/search/ZBTB16"},"hgnc":{"alias_symbol":["PLZF"],"prev_symbol":["ZNF145"]},"alphafold":{"accession":"Q05516","domains":[{"cath_id":"-","chopping":"16-124","consensus_level":"high","plddt":52.9568,"start":16,"end":124},{"cath_id":"3.30.160","chopping":"458-515","consensus_level":"medium","plddt":62.4629,"start":458,"end":515},{"cath_id":"3.30.160.60","chopping":"532-670","consensus_level":"medium","plddt":77.2122,"start":532,"end":670}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q05516","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q05516-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q05516-F1-predicted_aligned_error_v6.png","plddt_mean":54.94},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=ZBTB16","jax_strain_url":"https://www.jax.org/strain/search?query=ZBTB16"},"sequence":{"accession":"Q05516","fasta_url":"https://rest.uniprot.org/uniprotkb/Q05516.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q05516/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q05516"}},"corpus_meta":[{"pmid":"15156143","id":"PMC_15156143","title":"Essential 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experiments, reporter gene assays\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — reciprocal Co-IP in vivo and in vitro, functional inhibitor validation, replicated across multiple labs\",\n      \"pmids\": [\"9627120\", \"9765306\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1998,\n      \"finding\": \"The PLZF BTB domain forms an obligate homodimer with an extensive hydrophobic interface, revealed at 1.9 Å resolution; a conserved surface-exposed groove at the dimer interface represents the site of interaction with nuclear co-repressors.\",\n      \"method\": \"X-ray crystallography at 1.9 Å resolution\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — crystal structure with functional interpretation validated by subsequent mutagenesis studies\",\n      \"pmids\": [\"9770450\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1998,\n      \"finding\": \"PLZF-RARα and PML-RARα both interact with the SMRT co-repressor; however, PLZF-RARα forms RA-insensitive co-repressor complexes via its PLZF moiety, explaining RA resistance in t(11;17) APL. TSA combined with RA can overcome this repression.\",\n      \"method\": \"Transgenic mouse models, co-repressor interaction assays, TSA treatment experiments\",\n      \"journal\": \"Nature genetics\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — in vivo transgenic model combined with biochemical co-repressor interaction assays, replicated in multiple studies\",\n      \"pmids\": [\"9462740\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2002,\n      \"finding\": \"Structure-function analysis demonstrated that the charged pocket of the PLZF BTB domain (formed at the dimer interface) is required for transcriptional repression and for direct interaction with N-CoR, SMRT, and HDACs; mutations neutralizing key charged pocket residues abolish co-repressor binding without disrupting dimerization.\",\n      \"method\": \"Structure-function mutagenesis, co-repressor binding assays with purified proteins, transcriptional reporter assays\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — reconstitution with purified proteins, systematic mutagenesis, structural context from crystal structure\",\n      \"pmids\": [\"11865059\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1998,\n      \"finding\": \"PLZF interacts with multiple components of the SMRT co-repressor complex including mSin3A and HDAC1; these interactions are non-equivalent between PLZF and BCL-6; the oncogenic PLZF-RARα chimera lacks several co-repressor interaction sites present in native PLZF.\",\n      \"method\": \"Co-immunoprecipitation, GST pull-down\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — reciprocal Co-IP and pull-down, replicated co-repressor finding across multiple labs\",\n      \"pmids\": [\"9765306\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"PLZF directly represses c-myc transcription by binding to the c-myc promoter in vitro and in vivo, reducing RNA polymerase occupancy; c-myc repression mediates PLZF-induced cell cycle arrest, and ectopic c-myc expression reverses this arrest.\",\n      \"method\": \"Inducible PLZF cell line, microarray, ChIP, reporter assay with mutated binding site, EMSA\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — multiple orthogonal methods (ChIP, reporter with mutant site, rescue by c-myc re-expression)\",\n      \"pmids\": [\"14645547\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"PLZF is modified by SUMO-1 conjugation at lysine 242 in the RD2 domain; this sumoylation is required for full transcriptional repression activity, increases DNA binding activity, and is necessary for PLZF-mediated cell cycle regulation and repression of cyclin A2.\",\n      \"method\": \"Site-directed mutagenesis, EMSA, luciferase reporter assay, cell cycle analysis\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — site-directed mutagenesis with multiple functional readouts (DNA binding, transcription, cell cycle)\",\n      \"pmids\": [\"14527952\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2004,\n      \"finding\": \"PLZF (Zfp145/Plzf) is required in spermatogonial stem cells for self-renewal; loss of Plzf leads to progressive depletion of spermatogonial stem cells, increased apoptosis, and loss of tubule structure without overt differentiation defects.\",\n      \"method\": \"Knockout mouse (Zfp145-/-), spermatogonial transplantation, microarray analysis of isolated spermatogonia\",\n      \"journal\": \"Nature genetics\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — clean KO with specific cellular phenotype, spermatogonial transplantation to demonstrate stem cell defect, replicated independently\",\n      \"pmids\": [\"15156143\", \"15156142\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"PLZF directly represses Kit transcription by binding a discrete sequence in the kit promoter both in vivo (ChIP) and in vitro; a 3-bp mutation in the PLZF binding site abolishes repression; Kit expression is significantly increased in Plzf-/- undifferentiated spermatogonia.\",\n      \"method\": \"ChIP, EMSA, reporter assay with mutated binding site, Plzf-/- mouse model\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — direct binding shown by ChIP and EMSA, binding site mutation abolishes repression, validated in KO mouse\",\n      \"pmids\": [\"17664282\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"Plzf is required for limb and axial skeletal patterning; Plzf inactivation causes homeotic transformations and alters expression of AbdB Hox genes and BMPs in the developing limb bud, acting as a growth-inhibitory and pro-apoptotic factor independently of known patterning genes.\",\n      \"method\": \"Zfp145-/- knockout mouse, in situ hybridization, gene expression analysis\",\n      \"journal\": \"Nature genetics\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — clean KO with specific developmental phenotype and defined downstream targets\",\n      \"pmids\": [\"10835630\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"PLZF/RARA directly interacts with the Polycomb group protein Bmi-1 and forms a stable component of the PRC1 complex, resulting in RA-insensitive ectopic recruitment of PRC1 to RA response elements; Bmi-1 is essential for PLZF/RARA cellular transformation.\",\n      \"method\": \"Co-immunoprecipitation, ChIP, Bmi-1 knockdown/KO experiments\",\n      \"journal\": \"Genes & development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — reciprocal Co-IP, ChIP demonstrating recruitment, functional validation by Bmi-1 depletion\",\n      \"pmids\": [\"19451220\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"PLZF controls a regulatory pathway in megakaryopoiesis: PLZF binds and inhibits the miR-146a promoter, and miR-146a in turn targets CXCR4 mRNA to impede its translation; PLZF suppression of miR-146a thus activates CXCR4 translation to regulate megakaryocytic proliferation and differentiation.\",\n      \"method\": \"Reporter assays for miR-146a promoter, PLZF knockdown/overexpression, rescue experiments, in vitro megakaryopoiesis cultures\",\n      \"journal\": \"Nature cell biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — pathway established by reporter assay, KD/OE with rescue experiments, multiple orthogonal methods\",\n      \"pmids\": [\"18568019\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"During spermatogonial progenitor cell differentiation, Sall4 physically interacts with Plzf, sequesters Plzf to non-cognate chromatin domains to induce Kit expression; Plzf in turn displaces Sall4 from cognate chromatin to induce Sall1 expression, defining a functional antagonism between these factors.\",\n      \"method\": \"Co-immunoprecipitation, ChIP, gene expression analysis in Sall4/Plzf mutant models\",\n      \"journal\": \"Cell stem cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — reciprocal Co-IP plus ChIP establishing chromatin-level mechanism, validated in genetic models\",\n      \"pmids\": [\"22385656\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"ZBTB16 functions as the substrate-recognition subunit of a ZBTB16-Cullin3-Roc1 E3 ubiquitin ligase complex that ubiquitinates Atg14L to promote its proteasomal degradation; GPCR ligand activation regulates Atg14L levels and autophagy through this ZBTB16-dependent mechanism.\",\n      \"method\": \"Co-immunoprecipitation, ubiquitination assays, proteasomal degradation experiments, mouse model of Huntington's disease\",\n      \"journal\": \"eLife\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — Co-IP of complex components, in vitro ubiquitination, functional validation in disease model\",\n      \"pmids\": [\"25821988\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"Let-7 miRNAs directly target Zbtb16 mRNA to post-transcriptionally downregulate PLZF expression during NKT cell development; IL-15, vitamin D, and retinoic acid signal upregulation of let-7 miRNAs, which direct terminal differentiation into IFN-γ-producing NKT1 cells.\",\n      \"method\": \"miRNA target validation, let-7 overexpression/knockdown, NKT cell developmental analysis in transgenic mice\",\n      \"journal\": \"Nature immunology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — direct miRNA target validation, in vivo genetic model with defined developmental outcome\",\n      \"pmids\": [\"25848867\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"TLR/TNF-α signaling triggers CaMK2 to activate HAT1, which then acetylates PLZF; acetylation of PLZF promotes assembly of a repressor complex incorporating HDAC3 and NF-κB p50 subunit to limit NF-κB transcriptional responses.\",\n      \"method\": \"Kinase activation assays, acetyltransferase assays, Co-IP of repressor complex, site-directed mutagenesis of acetylation sites, inflammatory cytokine readouts\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — defined PTM writer (HAT1/CaMK2), reconstituted complex, mutagenesis of key residues with functional consequence\",\n      \"pmids\": [\"25865065\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"PLZF establishes basal repressive chromatin states at early response inflammatory genes by stabilizing a co-repressor complex with histone deacetylase activity; PLZF-deficient animals show exaggerated inflammatory cytokine responses.\",\n      \"method\": \"Genome-wide histone modification analysis (ChIP-seq), PLZF-KO mouse, temporal quantitation of inflammatory gene transcripts\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genome-wide ChIP-seq, clean KO with defined inflammatory phenotype\",\n      \"pmids\": [\"25605927\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"PLZF directly represses CRABPI through propagation of chromatin condensation from a remote intronic binding element to silence the promoter; the reciprocal RARα-PLZF product binds this remote site, recruits p300, induces promoter hypomethylation and CRABPI gene upregulation.\",\n      \"method\": \"ChIP, reporter assays, chromatin analysis, cell line differentiation experiments\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — ChIP demonstrating remote-to-promoter epigenetic spread, functional reporter assays, validated in APL patient cells\",\n      \"pmids\": [\"18000064\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"ERK1/2 activation by myeloid cytokines (stress response) causes nuclear export and inactivation of PLZF in human cord blood myeloid progenitors; PLZF represses transcription factors GFI-1, C/EBPα, and LEF-1, and induces negative regulators DUSP6 and ID2; loss of ID2 is a functional target that relieves PLZF-mediated repression of differentiation.\",\n      \"method\": \"PLZF promoter binding site analysis, ID2 knockdown rescue experiments, ERK activation assays, fractionation for nuclear export\",\n      \"journal\": \"Genes & development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — epistasis via ID2 knockdown rescue, subcellular fractionation, multiple target gene analyses\",\n      \"pmids\": [\"19723763\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"PLZF controls expression of a defined set of immune genes in NKT cells including c-Maf (which shapes cytokine profile) and Id2; ectopic c-Maf expression complemented the IL-4/IL-10 production defect in PLZF-deficient NKT cells.\",\n      \"method\": \"PLZF-KO mouse analysis, gene expression profiling, ectopic c-Maf expression rescue experiments\",\n      \"journal\": \"Frontiers in immunology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — KO with defined targets plus rescue by c-Maf; single lab\",\n      \"pmids\": [\"23267359\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"ChIP-seq in mouse THY1+ spermatogonia identified PLZF preferentially binding gene promoters (4176 bound genes) while SALL4 preferentially bound introns; PLZF and SALL4 share 1295 target genes but motif analysis showed they occupy shared sites largely non-autonomously via PLZF motifs; KD of either factor suppresses mRNA levels of unique and shared targets.\",\n      \"method\": \"ChIP-seq, motif analysis, siRNA knockdown, RNA-seq\",\n      \"journal\": \"Development (Cambridge, England)\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genome-wide ChIP-seq with functional KD validation in primary cells\",\n      \"pmids\": [\"27068105\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"ChIP-seq and microarray of NKT cells and PLZF-transgenic thymocytes revealed that PLZF: (1) directly binds and regulates cytokine and homing receptor genes; (2) activates T-helper-specific transcription factor genes; (3) binds and suppresses Bach2, a repressor of effector differentiation.\",\n      \"method\": \"Biotinylation-based ChIP-seq, microarray, PLZF-transgenic thymocytes\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genome-wide ChIP-seq with expression profiling in multiple model systems\",\n      \"pmids\": [\"27325774\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"PLZF physically interacts with the RAR ligand-binding domain in a ligand-independent manner via its N-terminal zinc finger domain; this interaction inhibits RXR-RAR heterodimerization both in vitro and in intact cells, leading to decreased RAR transcriptional activity.\",\n      \"method\": \"Yeast two-hybrid, GST pull-down, co-immunoprecipitation, reporter assays, heterodimerization assay\",\n      \"journal\": \"Nuclear receptor\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — multiple biochemical assays establishing direct interaction and mechanism\",\n      \"pmids\": [\"14521715\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"PLZF is SUMOylated at K242; the same residue can alternatively be ubiquitinated; oxidative stress (ROS from serum deprivation) inactivates SUMO-conjugating enzymes Uba2/Ubc9, shifting modification from SUMO to ubiquitin, destabilizing PLZF and inducing apoptosis via reduced BID repression.\",\n      \"method\": \"Site-directed mutagenesis, immunoprecipitation, stability assays, ROS measurement\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — extends prior sumoylation finding; single lab, single paper\",\n      \"pmids\": [\"18348865\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"The deubiquitinase USP37 interacts with PLZF/RARA through the PLZF moiety and stabilizes PLZF/RARA by reducing its poly-ubiquitination; USP37 knockdown decreases PLZF/RARA half-life, alleviates target gene suppression, and reduces cell transformation potential.\",\n      \"method\": \"RNAi screen, Co-IP, domain mapping, protein half-life assays, ubiquitination assays, primary hematopoietic progenitor transduction\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — RNAi screen followed by multiple orthogonal validation methods including functional transformation assay\",\n      \"pmids\": [\"23208507\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"PLZF/ZBTB16 is a neosubstrate of the CRL4CRBN ubiquitin ligase; thalidomide and 5-hydroxythalidomide promote CRBN-dependent degradation of PLZF in a manner dependent on the first and third zinc finger domains; PLZF degradation underlies thalidomide-induced limb teratogenicity.\",\n      \"method\": \"Human transcription factor protein array, cell-free protein synthesis system, ubiquitination assays, chicken embryo knockdown/overexpression, xenograft assays\",\n      \"journal\": \"The EMBO journal\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — identified by unbiased array, validated with in vitro ubiquitination, ZF domain mutagenesis, in vivo rescue\",\n      \"pmids\": [\"33470442\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"Cereblon modulators CC-3060 and CC-647 target ZBTB16 for proteasomal degradation through distinct structural degrons on different zinc finger domains; the same degrons are present in the ZBTB16-RARα and RARα-ZBTB16 fusion oncoproteins, which can also be degraded by these compounds.\",\n      \"method\": \"Targeted protein degradation assays, domain mapping, proteasome inhibitor experiments, structural degron identification\",\n      \"journal\": \"ACS chemical biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — systematic domain mapping with two distinct modulators and functional degradation assays\",\n      \"pmids\": [\"33206504\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"PLZF represses L1 retrotransposons by inducing DNA methylation at full-length L1 sequences, inhibiting L1 retrotransposition; PLZF also forms barrier-type boundaries by acting on truncated L1 sequences inserted in protein-coding genes; cell stress releases PLZF-mediated repression, leading to L1 activation.\",\n      \"method\": \"ChIP, bisulfite sequencing, L1 retrotransposition assay, PLZF KO/KD in germ and progenitor cells\",\n      \"journal\": \"The EMBO journal\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — direct demonstration of DNA methylation induction, retrotransposition assay, genetic validation\",\n      \"pmids\": [\"23727884\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"PLZF directly interacts with the (pro)renin receptor [(P)RR] and translocates to the nucleus upon renin stimulation, where it represses (P)RR itself and induces PI3K-p85α, leading to increased proliferation and decreased apoptosis.\",\n      \"method\": \"Protein-protein interaction assays, nuclear translocation studies, gene expression analysis\",\n      \"journal\": \"Journal of molecular medicine (Berlin, Germany)\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 — described as protein-protein interaction with nuclear translocation; mechanistic details primarily from review context\",\n      \"pmids\": [\"18335187\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"PLZF acts as a transcriptional activator of CCR6 in human Th17 cells by binding enhancer-like sites at -9/-10 and -13/-14 kb from the CCR6 upstream TSS; PLZF and RORC cross-regulate each other, and PLZF binds the RORC promoter.\",\n      \"method\": \"ChIP for modified histones, p300, and PLZF; siRNA knockdown; gene expression analysis in primary human T cells\",\n      \"journal\": \"Journal of immunology (Baltimore, Md. : 1950)\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — ChIP with multiple marks, KD validation in primary cells, binding at RORC promoter\",\n      \"pmids\": [\"25833398\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"A critical enhancer within the Zbtb16 locus, identified by CRISPR/Cas9 deletions, controls PLZF expression exclusively in innate lymphoid lineages; multiple Runx1-binding canonical motif sites within this enhancer are essential, with some controlling kinetics rather than overall levels of PLZF expression.\",\n      \"method\": \"Systematic CRISPR/Cas9-assisted enhancer deletions in vivo, ATAC-seq, ChIP-seq\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — systematic in vivo CRISPR deletion with ATAC-seq and ChIP-seq validation\",\n      \"pmids\": [\"29038474\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"PLZF co-occupies chromatin with EZH2 at PLZF target genes independently of SUZ12 and H3K27me3 (PRC2), but associated with active H3K4me3 marks; removal of EZH2 increases PLZF binding and gene expression, revealing a non-canonical role of EZH2 in restricting PLZF positive transcriptional activity.\",\n      \"method\": \"ChIP-seq, EZH2 depletion, histone modification analysis\",\n      \"journal\": \"Nucleic acids research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — ChIP-seq with genetic perturbation; single lab\",\n      \"pmids\": [\"29425303\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"ZBTB16 promotes SUMOylation of ASC (apoptosis-associated speck-like protein containing a CARD) to control inflammasome assembly; ablation of ZBTB16 reduces hyperactive inflammasome pathogenesis in a mouse model of Muckle-Wells syndrome.\",\n      \"method\": \"SUMOylation assays, Co-IP, ZBTB16 knockout mouse, Muckle-Wells syndrome model\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — defined PTM (SUMOylation of ASC), reciprocal Co-IP, in vivo genetic validation in disease model\",\n      \"pmids\": [\"38123560\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"LAZ3 (BCL-6) and PLZF directly interact via yeast two-hybrid, in vitro immunoprecipitation, and GST pull-down; heteromerization involves POZ/POZ contacts plus cross-contacts between zinc finger regions and POZ domains of each partner; the two proteins colocalize at nuclear dots.\",\n      \"method\": \"Yeast two-hybrid, in vitro immunoprecipitation, GST pull-down, immunofluorescence\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — multiple orthogonal interaction assays with domain mapping\",\n      \"pmids\": [\"11175338\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"PLZF elevates FGFR3 expression and STAT3 pathway activity in neural progenitors, suppresses neurogenesis, and biases progenitors towards glial cell production; PLZF loss reduces FGFR3 levels and causes premature neuronal differentiation.\",\n      \"method\": \"PLZF overexpression/loss-of-function in spinal cord progenitors, FGFR3 expression assays, STAT3 pathway activation measurements\",\n      \"journal\": \"PLoS biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — gain-of-function and loss-of-function with defined molecular pathway and cellular phenotype\",\n      \"pmids\": [\"24115909\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Hox5 proteins interact biochemically and genetically with PLZF to restrict Shh expression in the developing forelimb; loss of all three Hox5 genes (Hoxa5, Hoxb5, Hoxc5) combined with Plzf loss leads to anterior forelimb defects from Shh derepression.\",\n      \"method\": \"Genetic epistasis (compound mutant mice), biochemical interaction assays\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic epistasis in vivo plus biochemical interaction\",\n      \"pmids\": [\"24218595\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2005,\n      \"finding\": \"Gli3 and Plzf cooperate genetically to establish proximal limb patterning; Gli3-/-;Plzf-/- double mutants show loss of all proximal hindlimb cartilage condensations with death of Bmpr1b-expressing proximal mesenchymal cells, while distal condensations are relatively unperturbed.\",\n      \"method\": \"Double-mutant mouse genetic epistasis, in situ hybridization, cell death analysis\",\n      \"journal\": \"Nature\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — clean double-KO genetic epistasis with specific cellular and molecular phenotype\",\n      \"pmids\": [\"16015334\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"PLZF regulates proliferative activity of EOMES+ spermatogonial stem cells; in Plzf-null mice, EOMES+ SSCs have higher proliferation index, suggesting PLZF restrains their proliferative activity to prevent exhaustion.\",\n      \"method\": \"GDNF transgenic model, lineage tracing, busulfan challenge, RNAseq, scRNA-seq\",\n      \"journal\": \"eLife\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — multiple genetic tools and sequencing approaches; proliferative mechanism inferred from comparative analysis\",\n      \"pmids\": [\"31149899\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Znf179 directly interacts with Plzf (first two zinc fingers of Plzf are critical for interaction); Znf179 co-expression changes its own localization from cytoplasm to nucleus and increases Plzf protein abundance, though Plzf transcriptional repressor activity is unaffected in Gal4-dependent assays.\",\n      \"method\": \"Yeast two-hybrid, co-immunoprecipitation, domain mapping, subcellular localization analysis\",\n      \"journal\": \"Journal of biomedical science\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 — Co-IP and yeast two-hybrid, single lab, mechanistic consequence unclear\",\n      \"pmids\": [\"24359566\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"Nuclear LYRIC/AEG-1 interacts with PLZF (via N- and C-termini of LYRIC and C-terminal to RD2 of PLZF); co-expression of LYRIC/AEG-1 reduces PLZF-mediated repression by decreasing PLZF binding to target promoters; both proteins colocalize to nuclear bodies containing HDACs.\",\n      \"method\": \"Yeast two-hybrid, co-immunoprecipitation in mammalian cells, ChIP, immunofluorescence colocalization\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 — multiple interaction assays with functional consequence (ChIP showing reduced PLZF binding); single lab\",\n      \"pmids\": [\"19648967\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"REGγ proteasome activator loss increases p53 protein abundance in testis; p53 directly represses PLZF transcription, leading to decreased PLZF+ spermatogonia; partial p53 haplodeficiency rescues spermatogenesis defects in REGγ-null mice, establishing a REGγ-p53-PLZF pathway.\",\n      \"method\": \"REGγ knockout mouse, p53 haplodeficiency rescue (epistasis), p53-PLZF transcriptional repression in cell lines\",\n      \"journal\": \"Stem cell reports\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic epistasis with haplodeficiency rescue plus direct transcriptional repression assay\",\n      \"pmids\": [\"31402338\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"ZBTB16 acts downstream of Osterix (Osx) in osteoblastogenesis; ChIP assay showed Osx directly binds the ZBTB16 promoter at GC-rich Sp1 sequences; ZBTB16 silencing reduces alkaline phosphatase activity, osteocalcin/bone sialoprotein expression, and mineralized nodule formation; ZBTB16 overexpression induces osteogenic gene expression changes.\",\n      \"method\": \"ChIP assay, siRNA knockdown, transient transfection overexpression, ALP assay, Alizarin Red staining, microarray\",\n      \"journal\": \"Journal of cellular biochemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — ChIP plus KD/OE with functional readouts; single lab\",\n      \"pmids\": [\"27335174\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"Glucocorticoids increase basal progenitors co-expressing PAX6 and EOMES via ZBTB16 in human cerebral organoids and mice, leading to increased neuron production; a ZBTB16 enhancer variant that moderates glucocorticoid-induced ZBTB16 levels causally affects educational attainment and brain structure.\",\n      \"method\": \"Human cerebral organoids, ZBTB16 KO/OE, Mendelian randomization, prospective pregnancy cohort\",\n      \"journal\": \"Neuron\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — genetic and organoid evidence; ZBTB16 mediates glucocorticoid effect on progenitor expansion, single lab\",\n      \"pmids\": [\"38442714\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"KDM5B inhibits ZBTB16 expression by directly reducing H3K4me3 at the ZBTB16 promoter; loss of ZBTB16 then increases TOP2A expression to confer cisplatin resistance; USP7 stabilizes KDM5B by deubiquitination, thereby indirectly regulating the ZBTB16/TOP2A axis.\",\n      \"method\": \"ChIP-H3K4me3 at ZBTB16 promoter, siRNA knockdown/overexpression, in vitro and in vivo tumor assays\",\n      \"journal\": \"Cell death and differentiation\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — direct ChIP evidence for epigenetic regulation of ZBTB16 promoter, functional downstream pathway; single lab\",\n      \"pmids\": [\"38287116\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"PLZF directly binds the HOXB7 locus and regulates Hox gene expression in the developing limb; Plzf-/- limb buds show anterior expansion of Hoxd10-13 expression domains in the absence of ectopic Sonic hedgehog, and a 2,964-bp intronic deletion reducing Plzf expression recapitulates this (polydactyly).\",\n      \"method\": \"In situ hybridization, quantitative RT-PCR, linkage mapping, conserved noncoding element deletion analysis\",\n      \"journal\": \"Developmental dynamics\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — in vivo genetic model with expression analysis; cis-regulatory mechanism inferred\",\n      \"pmids\": [\"19191224\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"Super enhancers recruit BRD4 to the ZBTB16 locus, which then binds RPAP2 to transport RNA Pol II into the nucleus; BRD4 and RPAP2 synergistically regulate Pol II CTD phosphorylation (BRD4 phosphorylates Ser2, RPAP2 dephosphorylates Ser5) to initiate ZBTB16 transcriptional elongation during MSC osteogenesis.\",\n      \"method\": \"ChIP-seq, ATAC-seq, BRD4 inhibition, bone-targeting ZBTB16 overexpression in Brd4fl/fl Prx1-cre mice, OP models\",\n      \"journal\": \"Bone research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — mechanistic dissection of SE-BRD4-RPAP2-PolII cascade regulating ZBTB16; single lab but multiple approaches\",\n      \"pmids\": [\"37280207\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"PLZF activates REDD1 transcription, which mediates PLZF-dependent downregulation of TORC1 and maintenance of pluripotency in spermatogonial progenitor cells; PLZF also represses smooth muscle α-actin transcription, reorganizing the cytoskeleton and conferring resistance to oncogenic transformation.\",\n      \"method\": \"Target gene identification, TORC1 activity assay, cytoskeletal analysis, oncogenic transformation assays\",\n      \"journal\": \"Cell cycle (Georgetown, Tex.)\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 — review summarizing experimental findings from direct target studies; mechanistic interpretation strong but review format\",\n      \"pmids\": [\"21311223\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"ZBTB16/PLZF is a BTB-ZF transcriptional repressor (and sometimes activator) that recruits histone deacetylase-containing co-repressor complexes (mSin3A/HDAC1, N-CoR/SMRT) via a conserved charged pocket in its obligate homodimeric BTB domain; it directly binds target gene promoters (c-myc, Kit, CRABPI, CCR6, miR-146a) to regulate stem cell self-renewal, innate immune cell differentiation, megakaryopoiesis, and inflammatory responses, while additionally functioning as the substrate-recognition subunit of a CRL3/Cullin3-Roc1 E3 ubiquitin ligase targeting Atg14L and as a promoter of ASC SUMOylation to control inflammasome activity; its activity is post-translationally regulated by SUMO-1 conjugation (K242, enhancing repression), ubiquitination (promoting degradation), HAT1-mediated acetylation (promoting NF-κB repressor complex assembly), and by cereblon-dependent ubiquitination induced by thalidomide/IMiD compounds.\"\n}\n```","stage2_raw":"```json\n{\n  \"mechanistic_narrative\": \"ZBTB16 (PLZF) is a BTB/POZ-zinc finger transcription factor that functions as a master regulator of stem cell self-renewal, innate immune cell differentiation, limb patterning, and inflammatory gene control, acting primarily as a transcriptional repressor but also as a context-dependent activator. Its BTB domain forms an obligate homodimer whose charged pocket recruits N-CoR/SMRT and mSin3A/HDAC1 co-repressor complexes to directly silence target promoters including c-myc, Kit, CRABPI, and early inflammatory response genes, while it activates CCR6 and REDD1 in specific immune and germ cell contexts [PMID:9627120, PMID:11865059, PMID:14645547, PMID:17664282, PMID:25605927, PMID:25833398]. ZBTB16 activity is post-translationally tuned by SUMO-1 conjugation at K242 (enhancing DNA binding and repression), competitive ubiquitination at the same residue (promoting degradation under oxidative stress), HAT1-mediated acetylation (assembling an NF-κB-repressive HDAC3 complex), and cereblon-dependent degradation induced by thalidomide/IMiD compounds, which underlies thalidomide teratogenicity [PMID:14527952, PMID:18348865, PMID:25865065, PMID:33470442]. Beyond transcription, ZBTB16 serves as the substrate-recognition subunit of a Cullin3-Roc1 E3 ubiquitin ligase targeting Atg14L for proteasomal degradation to regulate autophagy, and promotes ASC SUMOylation to control inflammasome assembly [PMID:25821988, PMID:38123560].\",\n  \"teleology\": [\n    {\n      \"year\": 1998,\n      \"claim\": \"Establishing that PLZF represses transcription by directly recruiting histone deacetylase machinery resolved how this BTB-ZF protein silences target genes and explained the retinoic acid resistance of t(11;17) APL.\",\n      \"evidence\": \"Co-IP, in vitro binding, TSA inhibitor experiments, and reporter assays in cell lines; transgenic APL mouse models with SMRT interaction assays\",\n      \"pmids\": [\"9627120\", \"9765306\", \"9462740\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Identity of direct genomic targets was not yet established\", \"Whether PLZF can activate transcription was unknown\", \"The contribution of individual co-repressor complexes (N-CoR vs. mSin3A) to specific biological processes remained unclear\"]\n    },\n    {\n      \"year\": 1998,\n      \"claim\": \"The crystal structure of the BTB domain revealed obligate homodimerization and a surface-exposed groove at the dimer interface, providing the structural basis for co-repressor recruitment.\",\n      \"evidence\": \"X-ray crystallography at 1.9 Å resolution\",\n      \"pmids\": [\"9770450\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"No co-crystal with a co-repressor peptide was obtained\", \"How zinc finger domains contribute to target specificity was structurally undefined\"]\n    },\n    {\n      \"year\": 2000,\n      \"claim\": \"Loss-of-function in mice revealed PLZF as a patterning factor controlling limb and axial skeleton development through Hox gene and BMP regulation, establishing its first in vivo developmental role.\",\n      \"evidence\": \"Zfp145−/− knockout mouse with in situ hybridization and gene expression analysis\",\n      \"pmids\": [\"10835630\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct DNA binding sites in Hox loci were not mapped\", \"Relationship to other limb patterning transcription factors was unclear\"]\n    },\n    {\n      \"year\": 2002,\n      \"claim\": \"Structure-function mutagenesis of the BTB charged pocket demonstrated that specific residues are required for co-repressor binding without disrupting dimerization, separating the structural and functional requirements of the BTB domain.\",\n      \"evidence\": \"Reconstituted binding assays with purified proteins and systematic point mutants, transcriptional reporter assays\",\n      \"pmids\": [\"11865059\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether the charged pocket is the sole co-repressor interface was not excluded\", \"No atomic-resolution co-complex structure was determined\"]\n    },\n    {\n      \"year\": 2003,\n      \"claim\": \"Identification of c-myc, cyclin A2, and CRABPI as direct transcriptional targets, together with the discovery that SUMO-1 modification at K242 enhances DNA binding and repression, linked PLZF to cell cycle control and defined its first activating post-translational modification.\",\n      \"evidence\": \"ChIP, EMSA, reporter assays with mutated binding sites, site-directed mutagenesis of K242, cell cycle analysis\",\n      \"pmids\": [\"14645547\", \"14527952\", \"18000064\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"The SUMO E3 ligase responsible was not identified\", \"Whether SUMO modification affects co-repressor recruitment was untested\", \"Genome-wide target repertoire was unknown\"]\n    },\n    {\n      \"year\": 2004,\n      \"claim\": \"Demonstration that Plzf is essential for spermatogonial stem cell self-renewal established the gene's role as a stem cell maintenance factor, with progressive germ cell depletion upon loss.\",\n      \"evidence\": \"Zfp145−/− knockout mice, spermatogonial transplantation assays, microarray of isolated spermatogonia\",\n      \"pmids\": [\"15156143\", \"15156142\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct transcriptional targets mediating self-renewal were not identified\", \"Whether PLZF acts cell-autonomously in SSCs was not formally shown\"]\n    },\n    {\n      \"year\": 2005,\n      \"claim\": \"Genetic epistasis with Gli3 showed cooperative control of proximal limb patterning, positioning PLZF within a broader signaling network for appendicular skeletal development.\",\n      \"evidence\": \"Gli3−/−;Plzf−/− double-mutant mice with cartilage condensation and cell death analysis\",\n      \"pmids\": [\"16015334\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether PLZF and Gli3 physically interact or converge on shared targets was unknown\", \"The downstream effectors in proximal mesenchyme were not defined\"]\n    },\n    {\n      \"year\": 2007,\n      \"claim\": \"Direct binding and repression of Kit by PLZF in spermatogonia, validated by binding-site mutation and knockout, provided a molecular mechanism for how PLZF maintains the undifferentiated state of germ cells.\",\n      \"evidence\": \"ChIP, EMSA, reporter assay with 3-bp binding-site mutation, Plzf−/− mouse model\",\n      \"pmids\": [\"17664282\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether Kit derepression alone is sufficient for differentiation was not tested\", \"Other direct targets maintaining SSC identity remained uncharacterized\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"Discovery that K242 undergoes competitive SUMO-ubiquitin switching under oxidative stress, and that PLZF regulates miR-146a/CXCR4 in megakaryopoiesis, extended the regulatory logic to PTM-dependent protein stability and microRNA-mediated gene circuits.\",\n      \"evidence\": \"Site-directed mutagenesis and stability assays for SUMO/Ub switching; reporter assays, KD/OE with rescue for miR-146a pathway\",\n      \"pmids\": [\"18348865\", \"18568019\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"The ubiquitin E3 ligase targeting K242 was not identified\", \"Whether SUMO/Ub switching operates in vivo under physiological stress was unconfirmed\"]\n    },\n    {\n      \"year\": 2009,\n      \"claim\": \"ERK-dependent nuclear export of PLZF in myeloid progenitors and interaction of PLZF-RARA with Polycomb (PRC1/Bmi-1) revealed signal-dependent inactivation and epigenetic co-opting mechanisms central to normal differentiation and leukemogenesis.\",\n      \"evidence\": \"Subcellular fractionation, ID2 knockdown rescue, Co-IP of PLZF-RARA with Bmi-1, ChIP at RA response elements, Bmi-1 KO\",\n      \"pmids\": [\"19723763\", \"19451220\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"The kinase(s) directly phosphorylating PLZF for export were not mapped\", \"Whether wild-type PLZF also engages PRC1 was not determined\"]\n    },\n    {\n      \"year\": 2012,\n      \"claim\": \"Physical and functional antagonism between PLZF and SALL4 on shared chromatin targets in spermatogonia, and identification of USP37 as a deubiquitinase stabilizing PLZF-RARA, clarified how PLZF activity is modulated by protein partners and turnover.\",\n      \"evidence\": \"Reciprocal Co-IP, ChIP in Sall4/Plzf mutants; RNAi screen, ubiquitination and half-life assays for USP37\",\n      \"pmids\": [\"22385656\", \"23208507\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether SALL4 antagonism operates outside germ cells was unknown\", \"USP37 relevance to wild-type PLZF (not just fusion) was not shown\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"PLZF was shown to repress L1 retrotransposons by inducing DNA methylation and to cooperate with Hox5 proteins to restrict Shh expression, broadening its role to genome defense and morphogen regulation.\",\n      \"evidence\": \"ChIP, bisulfite sequencing, L1 retrotransposition assay, compound Hox5/Plzf mutant mice\",\n      \"pmids\": [\"23727884\", \"24218595\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"The DNA methyltransferase recruited by PLZF was not identified\", \"Whether PLZF-dependent L1 silencing operates in somatic tissues was untested\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Three convergent discoveries — PLZF as a CRL3 E3 ligase adaptor ubiquitinating Atg14L, HAT1-mediated acetylation assembling an NF-κB repressor complex, and genome-wide establishment of repressive chromatin at inflammatory genes — revealed non-transcriptional and anti-inflammatory effector functions.\",\n      \"evidence\": \"Co-IP and ubiquitination assays for CRL3-Atg14L; acetyltransferase assays, mutagenesis, Co-IP for HAT1-PLZF-HDAC3-p50; ChIP-seq and Plzf-KO inflammatory phenotyping\",\n      \"pmids\": [\"25821988\", \"25865065\", \"25605927\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether CRL3-PLZF has additional ubiquitination substrates beyond Atg14L was unknown\", \"The acetylation sites on PLZF were not fully mapped\", \"Whether anti-inflammatory and E3 ligase functions operate in the same cell types was untested\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Genome-wide ChIP-seq in spermatogonia and NKT cells mapped thousands of PLZF binding sites, showing preferential promoter occupancy, co-regulation with SALL4, and direct activation of T-helper programs including Bach2 suppression, providing a comprehensive target landscape.\",\n      \"evidence\": \"ChIP-seq, RNA-seq, microarray, siRNA KD in spermatogonia; biotinylation ChIP-seq in PLZF-transgenic thymocytes\",\n      \"pmids\": [\"27068105\", \"27325774\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"A consensus DNA-binding motif for PLZF zinc fingers was not structurally resolved\", \"Functional validation of most ChIP-seq targets was lacking\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Identification of PLZF/ZBTB16 as a cereblon neosubstrate degraded by thalidomide and IMiD compounds, dependent on the first and third zinc fingers, established the molecular basis of thalidomide-induced limb teratogenicity.\",\n      \"evidence\": \"Protein array screen, cell-free ubiquitination, ZF domain mutagenesis, chicken embryo rescue; targeted degradation assays with CC-3060/CC-647\",\n      \"pmids\": [\"33470442\", \"33206504\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether PLZF degradation alone is sufficient for all teratogenic effects was not fully resolved\", \"Structural basis of CRBN-ZF interaction was not determined at atomic resolution\"]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"ZBTB16 was found to promote ASC SUMOylation, controlling inflammasome assembly; ablation of ZBTB16 ameliorated inflammasome-driven pathology in Muckle-Wells syndrome, linking PLZF to innate immune inflammasome regulation.\",\n      \"evidence\": \"SUMOylation assays, Co-IP, ZBTB16 KO in Muckle-Wells mouse model\",\n      \"pmids\": [\"38123560\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether PLZF directly acts as a SUMO E3 ligase or recruits one was not determined\", \"The generalizability to other inflammasome-driven diseases was untested\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"The structural basis of PLZF zinc finger-DNA recognition, the full catalog of CRL3-PLZF ubiquitination substrates, and the mechanism by which PLZF switches between repressor and activator modes remain undefined.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Low\",\n      \"gaps\": [\"No co-crystal structure of zinc fingers with a DNA target exists\", \"Systematic identification of CRL3-PLZF substrates has not been performed\", \"How context determines repression versus activation is mechanistically unresolved\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [0, 3, 5, 6, 8, 15, 16, 17, 21, 29]},\n      {\"term_id\": \"GO:0003677\", \"supporting_discovery_ids\": [5, 6, 8, 17, 20, 21, 27, 29]},\n      {\"term_id\": \"GO:0140096\", \"supporting_discovery_ids\": [13, 32]},\n      {\"term_id\": \"GO:0098772\", \"supporting_discovery_ids\": [15, 22, 32]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [1, 5, 6, 17, 20, 21, 33]},\n      {\"term_id\": \"GO:0005694\", \"supporting_discovery_ids\": [20, 21, 31]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-74160\", \"supporting_discovery_ids\": [0, 3, 5, 6, 8, 15, 16, 17, 21, 29]},\n      {\"term_id\": \"R-HSA-4839726\", \"supporting_discovery_ids\": [16, 17, 27, 31]},\n      {\"term_id\": \"R-HSA-168256\", \"supporting_discovery_ids\": [14, 19, 21, 29, 32]},\n      {\"term_id\": \"R-HSA-1266738\", \"supporting_discovery_ids\": [7, 9, 35, 36, 42]},\n      {\"term_id\": \"R-HSA-9612973\", \"supporting_discovery_ids\": [13]},\n      {\"term_id\": \"R-HSA-392499\", \"supporting_discovery_ids\": [13, 24, 25, 26]},\n      {\"term_id\": \"R-HSA-162582\", \"supporting_discovery_ids\": [15, 18, 34]},\n      {\"term_id\": \"R-HSA-1643685\", \"supporting_discovery_ids\": [2, 10, 25]}\n    ],\n    \"complexes\": [\n      \"N-CoR/SMRT co-repressor complex\",\n      \"mSin3A/HDAC1 co-repressor complex\",\n      \"CRL3 (Cullin3-Roc1) E3 ubiquitin ligase\"\n    ],\n    \"partners\": [\n      \"NCOR1\",\n      \"NCOR2\",\n      \"SIN3A\",\n      \"HDAC1\",\n      \"CUL3\",\n      \"SALL4\",\n      \"BCL6\",\n      \"CRBN\"\n    ],\n    \"other_free_text\": []\n  }\n}\n```"}