{"gene":"ZNF282","run_date":"2026-06-11T09:02:07","timeline":{"discoveries":[{"year":1997,"finding":"ZNF282 (HUB1) binds directly to the U5 repressive element (U5RE) of the HTLV-I LTR, recognizing the TCCACCCC core motif, and strongly represses HTLV-I LTR-mediated transcription. A novel repressive domain (HUR domain) distinct from the KRAB-like domain was identified as required for repression, and the N-terminal region upstream of the HUR domain was also indispensable.","method":"Southwestern blotting (protein-DNA binding), reporter gene transcription assays, deletion mapping of repressive domains","journal":"Nucleic acids research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — direct DNA-binding assay plus functional transcriptional repression assay with domain deletion mapping, single lab","pmids":["9396811"],"is_preprint":false},{"year":2014,"finding":"ZNF282 functions as a co-activator of E2F1 in esophageal squamous cell carcinoma cells; depletion of ZNF282 inhibited E2F1-mediated gene expression, cell cycle progression, migration, and invasion, and reduced xenograft tumorigenicity.","method":"siRNA knockdown, reporter/co-activator assays, xenograft tumor model, cell cycle and migration assays","journal":"Oncotarget","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — loss-of-function with defined cellular phenotypes and pathway placement (E2F1 co-activation), single lab with multiple readouts","pmids":["25373738"],"is_preprint":false},{"year":2025,"finding":"ZNF282 binds to the PYCR2 gene locus and activates PYCR2 expression downstream of the lncRNA LINC02878, thereby enhancing proline biosynthesis and promoting colorectal cancer aggressiveness; LINC02878 was shown to bind ZNF282 to mediate this transcriptional activation.","method":"RNA pulldown/binding assay (lncRNA-protein interaction), gene knockdown (LINC02878), reporter/expression assays, in vivo xenograft model","journal":"Cellular and molecular life sciences : CMLS","confidence":"Low","confidence_rationale":"Tier 3 / Weak — mechanistic axis proposed from binding and expression assays in a single study; ZNF282's direct transcriptional activation of PYCR2 not fully reconstituted","pmids":["41331125"],"is_preprint":false},{"year":2025,"finding":"CRISPR/Cas9 knockout of ZNF282 in colorectal cancer cells impaired the G1/S cell cycle transition and downregulated E2F1 and its downstream targets CCNE1 and CCND1; motif scanning identified a putative ZNF282 binding site upstream of the E2F1 transcription start site, suggesting ZNF282 activates E2F1 expression by facilitating an upstream regulatory region.","method":"CRISPR/Cas9 knockout, rescue re-expression, cell cycle analysis, downstream target expression profiling, computational motif scanning","journal":"Cancer science","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — clean KO with rescue and defined cell cycle phenotype, E2F1 pathway placement; binding site is computational only, single lab","pmids":["41125417"],"is_preprint":false}],"current_model":"ZNF282 is a Krüppel-type zinc finger transcription factor that represses HTLV-I LTR-driven transcription by binding the U5RE element (TCCACCCC core motif) via a novel HUR repressive domain, and in cancer contexts acts as a transcriptional co-activator of E2F1 to promote G1/S cell cycle progression, as well as activating PYCR2 expression to enhance proline biosynthesis."},"narrative":{"mechanistic_narrative":"ZNF282 is a Krüppel-type zinc finger transcription factor with context-dependent repressive and activating functions on target gene promoters [PMID:9396811, PMID:25373738]. It was first defined as a sequence-specific DNA-binding repressor that recognizes the TCCACCCC core motif of the HTLV-I LTR U5 repressive element and silences LTR-driven transcription through a distinct HUR repressive domain, with the N-terminal region upstream of HUR also required for repression [PMID:9396811]. In cancer cells ZNF282 instead promotes proliferation by supporting the E2F1 transcriptional program: it acts as an E2F1 co-activator whose loss impairs E2F1-mediated gene expression, cell cycle progression, migration, invasion, and tumorigenicity [PMID:25373738], and its knockout blocks the G1/S transition while downregulating E2F1 and its targets CCNE1 and CCND1 [PMID:41125417]. Beyond DNA binding, transcriptional regulation, and these cell cycle/oncogenic phenotypes, no additional mechanistic detail of ZNF282 has been characterized in the available corpus.","teleology":[{"year":1997,"claim":"Establishing whether ZNF282 is a sequence-specific DNA-binding factor defined its identity as a transcriptional repressor with a dedicated repression domain.","evidence":"Southwestern blotting, reporter transcription assays, and deletion mapping on the HTLV-I LTR U5RE","pmids":["9396811"],"confidence":"Medium","gaps":["No structural basis for HUR-domain-mediated repression","Corepressor partners recruited by the HUR domain not identified","Endogenous (non-viral) target genes bound via the TCCACCCC motif not defined"]},{"year":2014,"claim":"Linking ZNF282 to E2F1 co-activation reframed it from a repressor to a positive regulator of proliferation in a cancer context.","evidence":"siRNA knockdown with co-activator/reporter assays, cell cycle, migration, and xenograft readouts in esophageal squamous cell carcinoma","pmids":["25373738"],"confidence":"Medium","gaps":["Whether ZNF282 contacts E2F1 directly or acts through DNA binding not resolved","Mechanism reconciling repressive (HUR) and co-activating roles unexplained"]},{"year":2025,"claim":"CRISPR knockout with rescue placed ZNF282 upstream of E2F1 expression itself, connecting it causally to the G1/S transition and E2F1 target genes.","evidence":"CRISPR/Cas9 knockout and rescue with cell cycle analysis, target profiling (CCNE1, CCND1), and computational motif scanning in colorectal cancer cells","pmids":["41125417"],"confidence":"Medium","gaps":["Predicted upstream E2F1 binding site is computational only, not confirmed by ChIP","Direct occupancy of the E2F1 regulatory region not demonstrated"]},{"year":2025,"claim":"A lncRNA-coupled axis proposed ZNF282 as an activator of proline biosynthesis, extending its transcriptional reach to metabolic targets.","evidence":"RNA pulldown for LINC02878-ZNF282 binding, LINC02878 knockdown, expression/reporter assays, and xenograft model in colorectal cancer","pmids":["41331125"],"confidence":"Low","gaps":["Direct transcriptional activation of PYCR2 by ZNF282 not fully reconstituted","Single-study axis without independent confirmation","Whether LINC02878 binding alters ZNF282 DNA-binding or recruits cofactors unknown"]},{"year":null,"claim":"How ZNF282 switches between HUR-domain-dependent repression and E2F1/metabolic gene activation, and what cofactors dictate this context dependence, remains unresolved.","evidence":"","pmids":[],"confidence":"Low","gaps":["No molecular explanation for repressor-to-activator switching","No genome-wide map of direct ZNF282 binding sites","Corepressor/coactivator complexes not characterized"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0003677","term_label":"DNA binding","supporting_discovery_ids":[0]},{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[0,1,3]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[0]}],"pathway":[{"term_id":"R-HSA-74160","term_label":"Gene expression (Transcription)","supporting_discovery_ids":[0,1,3]},{"term_id":"R-HSA-1640170","term_label":"Cell Cycle","supporting_discovery_ids":[3]}],"complexes":[],"partners":["E2F1","LINC02878"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"Q9UDV7","full_name":"Zinc finger protein 282","aliases":["HTLV-I U5RE-binding protein 1","HUB-1"],"length_aa":671,"mass_kda":74.3,"function":"Binds to the U5 repressive element (U5RE) of the human T cell leukemia virus type I long terminal repeat. It recognizes the 5'-TCCACCCC-3' sequence as a core motif and exerts a strong repressive effect on HTLV-I LTR-mediated expression","subcellular_location":"Nucleus","url":"https://www.uniprot.org/uniprotkb/Q9UDV7/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/ZNF282","classification":"Not Classified","n_dependent_lines":2,"n_total_lines":1208,"dependency_fraction":0.0016556291390728477},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[],"url":"https://opencell.sf.czbiohub.org/search/ZNF282","total_profiled":1310},"omim":[{"mim_id":"618593","title":"ZINC FINGER PROTEIN 398; ZNF398","url":"https://www.omim.org/entry/618593"},{"mim_id":"603397","title":"ZINC FINGER PROTEIN 282; ZNF282","url":"https://www.omim.org/entry/603397"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Approved","locations":[{"location":"Nucleoplasm","reliability":"Approved"},{"location":"Cytosol","reliability":"Additional"}],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in all","driving_tissues":[],"url":"https://www.proteinatlas.org/search/ZNF282"},"hgnc":{"alias_symbol":["HUB1"],"prev_symbol":[]},"alphafold":{"accession":"Q9UDV7","domains":[],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9UDV7","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q9UDV7-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q9UDV7-F1-predicted_aligned_error_v6.png","plddt_mean":54.91},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=ZNF282","jax_strain_url":"https://www.jax.org/strain/search?query=ZNF282"},"sequence":{"accession":"Q9UDV7","fasta_url":"https://rest.uniprot.org/uniprotkb/Q9UDV7.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q9UDV7/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9UDV7"}},"corpus_meta":[{"pmid":"21614000","id":"PMC_21614000","title":"Role of the ubiquitin-like protein Hub1 in splice-site usage and alternative splicing.","date":"2011","source":"Nature","url":"https://pubmed.ncbi.nlm.nih.gov/21614000","citation_count":81,"is_preprint":false},{"pmid":"15620657","id":"PMC_15620657","title":"Ubiquitin-like protein Hub1 is required for pre-mRNA splicing and localization of an essential splicing factor in fission yeast.","date":"2004","source":"Current biology : CB","url":"https://pubmed.ncbi.nlm.nih.gov/15620657","citation_count":52,"is_preprint":false},{"pmid":"14608371","id":"PMC_14608371","title":"The ubiquitin-like protein HUB1 forms SDS-resistant complexes with cellular proteins in the absence of ATP.","date":"2003","source":"EMBO reports","url":"https://pubmed.ncbi.nlm.nih.gov/14608371","citation_count":48,"is_preprint":false},{"pmid":"24872507","id":"PMC_24872507","title":"The conserved ubiquitin-like protein Hub1 plays a critical role in splicing in human cells.","date":"2014","source":"Journal of molecular cell biology","url":"https://pubmed.ncbi.nlm.nih.gov/24872507","citation_count":32,"is_preprint":false},{"pmid":"15569151","id":"PMC_15569151","title":"Hub1 is an essential ubiquitin-like protein without functioning as a typical modifier in fission yeast.","date":"2004","source":"Genes to cells : devoted to molecular & cellular mechanisms","url":"https://pubmed.ncbi.nlm.nih.gov/15569151","citation_count":32,"is_preprint":false},{"pmid":"28712727","id":"PMC_28712727","title":"Error-Prone Splicing Controlled by the Ubiquitin Relative Hub1.","date":"2017","source":"Molecular cell","url":"https://pubmed.ncbi.nlm.nih.gov/28712727","citation_count":28,"is_preprint":false},{"pmid":"9396811","id":"PMC_9396811","title":"HUB1, a novel Krüppel type zinc finger protein, represses the human T cell leukemia virus type I long terminal repeat-mediated expression.","date":"1997","source":"Nucleic acids research","url":"https://pubmed.ncbi.nlm.nih.gov/9396811","citation_count":22,"is_preprint":false},{"pmid":"20802032","id":"PMC_20802032","title":"Complete genome sequence of Mycoplasma hyorhinis strain HUB-1.","date":"2010","source":"Journal of bacteriology","url":"https://pubmed.ncbi.nlm.nih.gov/20802032","citation_count":21,"is_preprint":false},{"pmid":"20404555","id":"PMC_20404555","title":"The role of the transcript elongation factors FACT and HUB1 in leaf growth and the induction of flowering.","date":"2010","source":"Plant signaling & behavior","url":"https://pubmed.ncbi.nlm.nih.gov/20404555","citation_count":18,"is_preprint":false},{"pmid":"33262311","id":"PMC_33262311","title":"ESCRT recruitment by the S. cerevisiae inner nuclear membrane protein Heh1 is regulated by Hub1-mediated alternative splicing.","date":"2020","source":"Journal of cell science","url":"https://pubmed.ncbi.nlm.nih.gov/33262311","citation_count":17,"is_preprint":false},{"pmid":"31666190","id":"PMC_31666190","title":"Stress-induced upregulation of the ubiquitin-relative Hub1 modulates pre-mRNA splicing and facilitates cadmium tolerance in Saccharomyces cerevisiae.","date":"2019","source":"Biochimica et biophysica acta. Molecular cell research","url":"https://pubmed.ncbi.nlm.nih.gov/31666190","citation_count":16,"is_preprint":false},{"pmid":"34502293","id":"PMC_34502293","title":"UBL5/Hub1: An Atypical Ubiquitin-Like Protein with a Typical Role as a Stress-Responsive Regulator.","date":"2021","source":"International journal of molecular sciences","url":"https://pubmed.ncbi.nlm.nih.gov/34502293","citation_count":15,"is_preprint":false},{"pmid":"25373738","id":"PMC_25373738","title":"ZNF282 (Zinc finger protein 282), a novel E2F1 co-activator, promotes esophageal squamous cell carcinoma.","date":"2014","source":"Oncotarget","url":"https://pubmed.ncbi.nlm.nih.gov/25373738","citation_count":15,"is_preprint":false},{"pmid":"10087317","id":"PMC_10087317","title":"HUB1 is an autoantigen frequently eliciting humoral immune response in patients with adult T cell leukemia.","date":"1999","source":"International journal of oncology","url":"https://pubmed.ncbi.nlm.nih.gov/10087317","citation_count":12,"is_preprint":false},{"pmid":"36480405","id":"PMC_36480405","title":"The ubiquitin-like protein Hub1/UBL-5 functions in pre-mRNA splicing in Caenorhabditis elegans.","date":"2022","source":"FEBS letters","url":"https://pubmed.ncbi.nlm.nih.gov/36480405","citation_count":7,"is_preprint":false},{"pmid":"37453225","id":"PMC_37453225","title":"Moonlighting functions of the ubiquitin-like protein, Hub1/UBL-5.","date":"2023","source":"The international journal of biochemistry & cell biology","url":"https://pubmed.ncbi.nlm.nih.gov/37453225","citation_count":5,"is_preprint":false},{"pmid":"35098049","id":"PMC_35098049","title":"Broader roles of the ubiquitin-like protein Hub1 indicated by its yeast two-hybrid interactors.","date":"2022","source":"microPublication biology","url":"https://pubmed.ncbi.nlm.nih.gov/35098049","citation_count":5,"is_preprint":false},{"pmid":"23073007","id":"PMC_23073007","title":"Is HUB1 a hub for plant fitness?","date":"2012","source":"Plant signaling & behavior","url":"https://pubmed.ncbi.nlm.nih.gov/23073007","citation_count":3,"is_preprint":false},{"pmid":"41053551","id":"PMC_41053551","title":"Integrative analysis of Hub1 overexpression: driving transcriptional reprogramming and alternative splicing in Saccharomyces cerevisiae.","date":"2025","source":"BMC genomics","url":"https://pubmed.ncbi.nlm.nih.gov/41053551","citation_count":2,"is_preprint":false},{"pmid":"36500376","id":"PMC_36500376","title":"Computer- and NMR-Aided Design of Small-Molecule Inhibitors of the Hub1 Protein.","date":"2022","source":"Molecules (Basel, Switzerland)","url":"https://pubmed.ncbi.nlm.nih.gov/36500376","citation_count":1,"is_preprint":false},{"pmid":"41331125","id":"PMC_41331125","title":"LINC02878/ZNF282/PYCR2 axis promotes proline synthesis and tumor progression in colorectal cancer.","date":"2025","source":"Cellular and molecular life sciences : CMLS","url":"https://pubmed.ncbi.nlm.nih.gov/41331125","citation_count":1,"is_preprint":false},{"pmid":"41125417","id":"PMC_41125417","title":"ZNF282 Promotes Colorectal Cancer Progression Possibly via E2F1 Activation.","date":"2025","source":"Cancer science","url":"https://pubmed.ncbi.nlm.nih.gov/41125417","citation_count":0,"is_preprint":false},{"pmid":"38931013","id":"PMC_38931013","title":"Correction: Reyes Romero et al. Computer- and NMR-Aided Design of Small-Molecule Inhibitors of the Hub1 Protein. Molecules 2022, 27, 8282.","date":"2024","source":"Molecules (Basel, Switzerland)","url":"https://pubmed.ncbi.nlm.nih.gov/38931013","citation_count":0,"is_preprint":false}],"cost":{"stage1":{"model":"claude-sonnet-4-6","input_tokens":11008,"output_tokens":1460,"usd":0.027462,"stage1_stop_reason":"end_turn"},"stage2":{"model":"claude-opus-4-8","input_tokens":7629,"output_tokens":1869,"usd":0.042435,"stage2_stop_reason":"end_turn"},"total_usd":0.069897,"stage1_batch_id":"msgbatch_01UT1AahFPCAyn2uVweS7A9z","stage2_batch_id":"msgbatch_01HuKWtKNT4Pqj1bc8eEP5RV","note":"batch pricing = 50% of standard"},"stage1_raw":"Looking at the corpus, I need to identify papers about the canonical ZNF282/HUB1 protein. There are two distinct proteins here:\n\n1. **ZNF282/HUB1 (Krüppel-type zinc finger protein, 671 aa)** — the human gene queried (papers 7, 13, 14, 21, 22)\n2. **Hub1/UBL5 (ubiquitin-like protein)** — a different protein (HUB1 as alias for UBL5/ubiquitin-like), papers 1-6, 8-12, 15-20 — these are about a completely different protein\n\nThe HGNC alias \"HUB1\" provided refers to ZNF282. However, I need to check whether the UBL5/Hub1 papers are actually about ZNF282. Looking at paper 7 (PMID:9396811), HUB1 was cloned as the HTLV-I U5RE binding protein (671 aa Krüppel zinc finger). Papers 1-6 and 8-20 describe a ~70-80 aa ubiquitin-like protein — a completely different protein. These are a symbol collision (UBL5 was also called HUB1/Hub1 in yeast/other organisms but is NOT ZNF282).\n\nSo I will only extract from papers about ZNF282 (the Krüppel zinc finger protein): papers 7, 13, 14, 21, 22.\n\n```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 1997,\n      \"finding\": \"ZNF282 (HUB1) binds directly to the U5 repressive element (U5RE) of the HTLV-I LTR, recognizing the TCCACCCC core motif, and strongly represses HTLV-I LTR-mediated transcription. A novel repressive domain (HUR domain) distinct from the KRAB-like domain was identified as required for repression, and the N-terminal region upstream of the HUR domain was also indispensable.\",\n      \"method\": \"Southwestern blotting (protein-DNA binding), reporter gene transcription assays, deletion mapping of repressive domains\",\n      \"journal\": \"Nucleic acids research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — direct DNA-binding assay plus functional transcriptional repression assay with domain deletion mapping, single lab\",\n      \"pmids\": [\"9396811\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"ZNF282 functions as a co-activator of E2F1 in esophageal squamous cell carcinoma cells; depletion of ZNF282 inhibited E2F1-mediated gene expression, cell cycle progression, migration, and invasion, and reduced xenograft tumorigenicity.\",\n      \"method\": \"siRNA knockdown, reporter/co-activator assays, xenograft tumor model, cell cycle and migration assays\",\n      \"journal\": \"Oncotarget\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — loss-of-function with defined cellular phenotypes and pathway placement (E2F1 co-activation), single lab with multiple readouts\",\n      \"pmids\": [\"25373738\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"ZNF282 binds to the PYCR2 gene locus and activates PYCR2 expression downstream of the lncRNA LINC02878, thereby enhancing proline biosynthesis and promoting colorectal cancer aggressiveness; LINC02878 was shown to bind ZNF282 to mediate this transcriptional activation.\",\n      \"method\": \"RNA pulldown/binding assay (lncRNA-protein interaction), gene knockdown (LINC02878), reporter/expression assays, in vivo xenograft model\",\n      \"journal\": \"Cellular and molecular life sciences : CMLS\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — mechanistic axis proposed from binding and expression assays in a single study; ZNF282's direct transcriptional activation of PYCR2 not fully reconstituted\",\n      \"pmids\": [\"41331125\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"CRISPR/Cas9 knockout of ZNF282 in colorectal cancer cells impaired the G1/S cell cycle transition and downregulated E2F1 and its downstream targets CCNE1 and CCND1; motif scanning identified a putative ZNF282 binding site upstream of the E2F1 transcription start site, suggesting ZNF282 activates E2F1 expression by facilitating an upstream regulatory region.\",\n      \"method\": \"CRISPR/Cas9 knockout, rescue re-expression, cell cycle analysis, downstream target expression profiling, computational motif scanning\",\n      \"journal\": \"Cancer science\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — clean KO with rescue and defined cell cycle phenotype, E2F1 pathway placement; binding site is computational only, single lab\",\n      \"pmids\": [\"41125417\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"ZNF282 is a Krüppel-type zinc finger transcription factor that represses HTLV-I LTR-driven transcription by binding the U5RE element (TCCACCCC core motif) via a novel HUR repressive domain, and in cancer contexts acts as a transcriptional co-activator of E2F1 to promote G1/S cell cycle progression, as well as activating PYCR2 expression to enhance proline biosynthesis.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"ZNF282 is a Krüppel-type zinc finger transcription factor with context-dependent repressive and activating functions on target gene promoters [#0, #1]. It was first defined as a sequence-specific DNA-binding repressor that recognizes the TCCACCCC core motif of the HTLV-I LTR U5 repressive element and silences LTR-driven transcription through a distinct HUR repressive domain, with the N-terminal region upstream of HUR also required for repression [#0]. In cancer cells ZNF282 instead promotes proliferation by supporting the E2F1 transcriptional program: it acts as an E2F1 co-activator whose loss impairs E2F1-mediated gene expression, cell cycle progression, migration, invasion, and tumorigenicity [#1], and its knockout blocks the G1/S transition while downregulating E2F1 and its targets CCNE1 and CCND1 [#3]. Beyond DNA binding, transcriptional regulation, and these cell cycle/oncogenic phenotypes, no additional mechanistic detail of ZNF282 has been characterized in the available corpus.\",\n  \"teleology\": [\n    {\n      \"year\": 1997,\n      \"claim\": \"Establishing whether ZNF282 is a sequence-specific DNA-binding factor defined its identity as a transcriptional repressor with a dedicated repression domain.\",\n      \"evidence\": \"Southwestern blotting, reporter transcription assays, and deletion mapping on the HTLV-I LTR U5RE\",\n      \"pmids\": [\"9396811\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"No structural basis for HUR-domain-mediated repression\",\n        \"Corepressor partners recruited by the HUR domain not identified\",\n        \"Endogenous (non-viral) target genes bound via the TCCACCCC motif not defined\"\n      ]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Linking ZNF282 to E2F1 co-activation reframed it from a repressor to a positive regulator of proliferation in a cancer context.\",\n      \"evidence\": \"siRNA knockdown with co-activator/reporter assays, cell cycle, migration, and xenograft readouts in esophageal squamous cell carcinoma\",\n      \"pmids\": [\"25373738\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Whether ZNF282 contacts E2F1 directly or acts through DNA binding not resolved\",\n        \"Mechanism reconciling repressive (HUR) and co-activating roles unexplained\"\n      ]\n    },\n    {\n      \"year\": 2025,\n      \"claim\": \"CRISPR knockout with rescue placed ZNF282 upstream of E2F1 expression itself, connecting it causally to the G1/S transition and E2F1 target genes.\",\n      \"evidence\": \"CRISPR/Cas9 knockout and rescue with cell cycle analysis, target profiling (CCNE1, CCND1), and computational motif scanning in colorectal cancer cells\",\n      \"pmids\": [\"41125417\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Predicted upstream E2F1 binding site is computational only, not confirmed by ChIP\",\n        \"Direct occupancy of the E2F1 regulatory region not demonstrated\"\n      ]\n    },\n    {\n      \"year\": 2025,\n      \"claim\": \"A lncRNA-coupled axis proposed ZNF282 as an activator of proline biosynthesis, extending its transcriptional reach to metabolic targets.\",\n      \"evidence\": \"RNA pulldown for LINC02878-ZNF282 binding, LINC02878 knockdown, expression/reporter assays, and xenograft model in colorectal cancer\",\n      \"pmids\": [\"41331125\"],\n      \"confidence\": \"Low\",\n      \"gaps\": [\n        \"Direct transcriptional activation of PYCR2 by ZNF282 not fully reconstituted\",\n        \"Single-study axis without independent confirmation\",\n        \"Whether LINC02878 binding alters ZNF282 DNA-binding or recruits cofactors unknown\"\n      ]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How ZNF282 switches between HUR-domain-dependent repression and E2F1/metabolic gene activation, and what cofactors dictate this context dependence, remains unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Low\",\n      \"gaps\": [\n        \"No molecular explanation for repressor-to-activator switching\",\n        \"No genome-wide map of direct ZNF282 binding sites\",\n        \"Corepressor/coactivator complexes not characterized\"\n      ]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0003677\", \"supporting_discovery_ids\": [0]},\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [0, 1, 3]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [0]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-74160\", \"supporting_discovery_ids\": [0, 1, 3]},\n      {\"term_id\": \"R-HSA-1640170\", \"supporting_discovery_ids\": [3]}\n    ],\n    \"complexes\": [],\n    \"partners\": [\"E2F1\", \"LINC02878\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":3,"faith_total":3,"faith_pct":100.0}}