{"gene":"ZC3H11A","run_date":"2026-06-11T09:02:06","timeline":{"discoveries":[{"year":2018,"finding":"ZC3H11A is a stress-induced nuclear protein with RNA-binding capacity that localizes to nuclear splicing speckles. During adenovirus infection, ZC3H11A and splicing factor SRSF2 relocalize to nuclear regions where viral DNA replication and transcription occur. CLIP-seq showed ZC3H11A binds short purine-rich ribonucleotide stretches in cellular and adenoviral transcripts. In ZC3H11A knockout HeLa cells, adenovirus fiber mRNA accumulates in the nucleus, demonstrating that RNA-binding is required for ZC3H11A's role in nuclear mRNA export. Multiple nuclear-replicating viruses (HIV, influenza, HSV, adenovirus) but not cytoplasmic-replicating viruses depend on ZC3H11A for efficient growth.","method":"CRISPR/Cas9 knockout, CLIP-seq (cross-linking immunoprecipitation sequencing), immunofluorescence/localization, RNA nuclear export assay","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple orthogonal methods (KO, CLIP-seq, localization, functional rescue) in a single focused study with clear phenotypic readout","pmids":["29610341"],"is_preprint":false},{"year":2009,"finding":"ZC3H11A interacts with the splicing factor U2AF65 (U2AF2) as identified by yeast two-hybrid screening, suggesting a role in pre-mRNA splicing or U2AF65 sub-nuclear localization.","method":"Yeast two-hybrid","journal":"Biochimica et biophysica acta","confidence":"Low","confidence_rationale":"Tier 3 / Weak — single yeast two-hybrid assay, no biochemical confirmation reported in abstract","pmids":["19540372"],"is_preprint":false},{"year":2023,"finding":"ZC3H11A protein interacts specifically with the nuclear poly(A)-binding protein PABPN1, which controls ZC3H11A localization into nuclear speckles. ZC3H11A uses the same zinc finger motifs to interact with PABPN1 and with adenovirus (HAdV-5) capsid mRNA. Loss of ZC3H11A alters polyadenylation of HAdV-5 capsid mRNA, indicating ZC3H11A acts as a novel regulator of mRNA polyadenylation.","method":"Co-immunoprecipitation (ZC3H11A interactome), RNA immunoprecipitation, mutagenesis of zinc finger motifs, polyadenylation assay in KO cells","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 2 / Moderate — reciprocal interactome, mutagenesis mapping interaction domain, functional polyadenylation assay in KO cells, multiple orthogonal methods in one study","pmids":["37356722"],"is_preprint":false},{"year":2023,"finding":"Zc3h11a is essential for mouse embryonic viability; homozygous KO embryos degenerate around implantation (E6.5). Proteomic analysis in embryonic stem cells showed ZC3H11A tightly interacts with mRNA-export proteins. CLIP-seq demonstrated ZC3H11A binds a subset of mRNAs critical for metabolic regulation. Loss of Zc3h11a dysregulates glycolysis and fatty acid metabolic pathways (transcriptomics at E4.5), impairs differentiation toward epiblast-like cells, and reduces mitochondrial membrane potential in embryonic stem cells.","method":"Conditional and constitutive CRISPR/Cas9 knockout mice, transcriptomics, proteomics (interactome), CLIP-seq, mitochondrial membrane potential assay, in vitro differentiation assay","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple orthogonal methods (KO mouse, CLIP-seq, proteomics, transcriptomics, functional cellular assays) in a single rigorous study","pmids":["37252988"],"is_preprint":false},{"year":2022,"finding":"Porcine ZC3H11A interacts with the TREX (transcription and export) complex and is required for mRNA export in pig cells. Knockout of porcine ZC3H11A via CRISPR/Cas9 significantly inhibits proliferation of pseudorabies virus (PRV) and porcine circovirus 2 (PCV2), consistent with a conserved role in mRNA export supporting nuclear-replicating virus growth.","method":"CRISPR/Cas9 knockout in PK-15 cells, Co-IP with TREX complex, viral growth assay","journal":"ACS infectious diseases","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — KO with defined viral phenotype plus TREX interaction, single lab, orthologous (porcine) system","pmids":["35559610"],"is_preprint":false},{"year":2024,"finding":"ZC3H11A is a phosphorylation substrate of both RSK1 and RSK4 serine/threonine kinases (downstream of ERK1/2 MAPK pathway), as identified by analog-sensitive kinase strategy and validated by mutagenesis and kinase inhibitors.","method":"Analog-sensitive kinase substrate identification, mutagenesis, kinase inhibitor validation","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 1 / Weak — in vitro analog-sensitive kinase assay with mutagenesis validation, single study, substrate identity confirmed but functional consequence of phosphorylation not detailed","pmids":["38342435"],"is_preprint":false},{"year":2024,"finding":"ZC3H11A is an extensively intrinsically disordered protein (810 aa) with only the N-terminal zinc finger domain (aa 1–86) being well structured. Substitution of Cys8 in the zinc finger did not abolish nucleic acid binding but stabilized the full-length protein. The protein forms monomers, dimers, tetramers and hexamers in solution.","method":"Recombinant protein expression (Sf9 insect cells, E. coli), mutagenesis (Cys8→Ala/Ser), size-exclusion chromatography, structural characterization","journal":"Protein expression and purification","confidence":"Medium","confidence_rationale":"Tier 1 / Weak — direct biochemical/structural characterization with mutagenesis, single study, limited functional follow-up","pmids":["38969281"],"is_preprint":false},{"year":2024,"finding":"Knockdown of ZC3H11A using antisense oligonucleotides (ASO) or shRNA upregulates MHC class I antigen presentation, increases IFN-β secretion, induces apoptosis (caspase activation, annexin V), and triggers immunogenic cell death (calreticulin surface exposure, ATP secretion) leading to dendritic cell phagocytosis and maturation. Constitutive shRNA knockdown in B16 melanoma cells reduces tumor growth and prolongs survival in mice.","method":"ASO knockdown, shRNA lentiviral knockdown, flow cytometry (MHC I, annexin V, calreticulin), ELISA (IFN-β, ATP), in vivo tumor model","journal":"Molecular therapy. Nucleic acids","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — loss-of-function with multiple orthogonal protein-level readouts and in vivo validation, single lab","pmids":["39582529"],"is_preprint":false},{"year":2025,"finding":"Missense mutations in ZC3H11A are associated with high myopia in humans. Zc3h11a KO mice develop myopia with upregulation of Tgfβ1, Mmp2, and Il6 in retina/sclera, bipolar cell dysfunction and loss, and ultrastructural abnormalities. Retinal transcriptomics identified 769 differentially expressed genes, and qPCR/western blotting confirmed ZC3H11A negatively regulates the PI3K-AKT and NF-κB signaling pathways.","method":"Whole exome sequencing (human cohort), Zc3h11a KO mouse model, electroretinography, immunofluorescence, transmission electron microscopy, retinal RNA-seq, qPCR, western blotting","journal":"eLife","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — KO mouse with multiple orthogonal phenotypic and molecular readouts, pathway placement by western blot, single lab","pmids":["40864167"],"is_preprint":false}],"current_model":"ZC3H11A is a stress-induced, largely intrinsically disordered nuclear RNA-binding protein that binds short purine-rich sequences via its N-terminal CCCH zinc finger domain; it associates with the TREX mRNA-export complex and with PABPN1 (which controls its localization to nuclear speckles), facilitates nuclear export and polyadenylation of a subset of mRNAs, is phosphorylated by RSK1/4 downstream of ERK1/2, and is essential for early mouse embryogenesis by maintaining metabolic gene expression—functions that multiple nuclear-replicating viruses exploit for their replication."},"narrative":{"mechanistic_narrative":"ZC3H11A is a stress-induced, intrinsically disordered nuclear RNA-binding protein that promotes nuclear export and processing of a subset of cellular mRNAs and is exploited by nuclear-replicating viruses [PMID:29610341, PMID:35559610]. It binds short purine-rich ribonucleotide stretches through its sole structured element, an N-terminal CCCH zinc finger, with the remainder of the 810-residue protein being disordered [PMID:29610341, PMID:38969281]. The protein localizes to nuclear splicing speckles and uses its zinc finger motifs both to engage target transcripts and to interact with the nuclear poly(A)-binding protein PABPN1, which controls its speckle localization; through this association ZC3H11A regulates mRNA polyadenylation [PMID:37356722]. It associates tightly with the TREX mRNA-export complex, and its loss causes nuclear accumulation of target mRNAs and impairs export, underlying the dependence of HIV, influenza, HSV, adenovirus, pseudorabies virus, and porcine circovirus 2 on ZC3H11A for efficient replication [PMID:29610341, PMID:35559610]. ZC3H11A is a phosphorylation substrate of the ERK1/2-downstream kinases RSK1 and RSK4 [PMID:38342435]. In vivo, Zc3h11a is essential for early mouse embryogenesis, where it maintains expression of glycolytic and fatty-acid metabolic genes and mitochondrial function [PMID:37252988]; its loss in tumor and tissue contexts engages immunogenic cell death and antigen-presentation pathways [PMID:39582529] and, in the eye, links to high myopia with dysregulated PI3K-AKT and NF-κB signaling [PMID:40864167].","teleology":[{"year":2009,"claim":"An initial interaction screen placed ZC3H11A in the nuclear pre-mRNA processing machinery by linking it to a core splicing factor, raising the question of whether it acts in splicing or splicing-factor localization.","evidence":"Yeast two-hybrid identifying interaction with U2AF65 (U2AF2)","pmids":["19540372"],"confidence":"Low","gaps":["Single yeast two-hybrid with no biochemical confirmation","Functional consequence of the interaction untested","No mapping of interaction surface"]},{"year":2018,"claim":"Defined ZC3H11A's core molecular activity: a stress-induced speckle-localized RNA-binding protein that binds purine-rich motifs and is required for nuclear mRNA export, explaining why nuclear- but not cytoplasmic-replicating viruses depend on it.","evidence":"CRISPR/Cas9 knockout, CLIP-seq, immunofluorescence, and nuclear export assays in HeLa cells during adenovirus infection","pmids":["29610341"],"confidence":"High","gaps":["Export machinery partners not yet identified","Cellular (non-viral) mRNA targets not defined","Mechanism coupling RNA binding to export step unresolved"]},{"year":2022,"claim":"Connected ZC3H11A's export function to a defined machinery by showing it associates with the TREX complex, and that this role is conserved and supports nuclear-replicating virus growth in a non-human system.","evidence":"CRISPR/Cas9 knockout, Co-IP with TREX complex, and viral growth assays in porcine PK-15 cells","pmids":["35559610"],"confidence":"Medium","gaps":["Direct vs indirect TREX contact not resolved","Single lab, orthologous system","Which TREX subunit ZC3H11A binds unknown"]},{"year":2023,"claim":"Identified PABPN1 as a key partner that localizes ZC3H11A to speckles and revealed a second molecular function—regulation of mRNA polyadenylation—mediated by the same zinc finger motifs used for RNA binding.","evidence":"Co-IP interactome, RNA immunoprecipitation, zinc-finger mutagenesis, and polyadenylation assays in KO cells","pmids":["37356722"],"confidence":"High","gaps":["Whether polyadenylation control extends to cellular transcripts beyond viral mRNA unclear","Mechanism by which PABPN1 directs speckle localization not detailed","Relationship between export and polyadenylation roles unresolved"]},{"year":2023,"claim":"Established the physiological essentiality of ZC3H11A, showing it is required for early embryogenesis through maintenance of metabolic gene expression and mitochondrial function, linking its mRNA-handling activity to a developmental program.","evidence":"Constitutive/conditional KO mice, CLIP-seq, proteomic interactome, transcriptomics, and mitochondrial/differentiation assays in embryonic stem cells","pmids":["37252988"],"confidence":"High","gaps":["Direct mRNA targets driving the metabolic phenotype not pinpointed","Whether lethality reflects export vs polyadenylation defect unclear","Causal link between mitochondrial defect and lethality not established"]},{"year":2024,"claim":"Placed ZC3H11A as a downstream node of the ERK1/2 MAPK pathway by identifying it as a direct RSK1/RSK4 phosphorylation substrate, introducing a potential regulatory input to its activity.","evidence":"Analog-sensitive kinase substrate identification with mutagenesis and inhibitor validation","pmids":["38342435"],"confidence":"Medium","gaps":["Functional consequence of phosphorylation not determined","Phosphosites' effect on RNA binding or localization untested","In vivo relevance of the modification unknown"]},{"year":2024,"claim":"Characterized the protein architecture, showing ZC3H11A is largely intrinsically disordered with only the N-terminal zinc finger structured, and that Cys8 contributes to protein stability rather than nucleic acid binding.","evidence":"Recombinant expression in Sf9/E. coli, Cys8 mutagenesis, and size-exclusion chromatography","pmids":["38969281"],"confidence":"Medium","gaps":["Functional role of oligomeric states untested","No high-resolution structure of the zinc finger-RNA complex","Role of disordered region in partner binding unmapped"]},{"year":2024,"claim":"Revealed a cell-fate consequence of ZC3H11A loss: depletion triggers interferon, antigen presentation, and immunogenic cell death, with antitumor effect in vivo, positioning it as a survival/immune-evasion factor.","evidence":"ASO and shRNA knockdown with flow cytometry, ELISA, and an in vivo B16 melanoma model","pmids":["39582529"],"confidence":"Medium","gaps":["Molecular link between mRNA-export role and apoptosis/IFN induction not defined","Direct effector transcripts unknown","Single-lab in vivo result"]},{"year":2025,"claim":"Linked ZC3H11A to a human Mendelian-type phenotype, high myopia, with a KO mouse recapitulating ocular pathology and implicating negative regulation of PI3K-AKT and NF-κB signaling.","evidence":"Whole exome sequencing of a human cohort plus Zc3h11a KO mouse with ERG, histology, retinal RNA-seq, qPCR, and western blotting","pmids":["40864167"],"confidence":"Medium","gaps":["Causal mechanism connecting RNA-handling to myopia unresolved","Pathway placement rests on expression/western readouts","Direct retinal mRNA targets not identified"]},{"year":null,"claim":"How ZC3H11A's RNA-export and polyadenylation activities are mechanistically integrated, and how phosphorylation, oligomerization, and partner binding tune target selection across development, immunity, and disease, remains unresolved.","evidence":"","pmids":[],"confidence":"Medium","gaps":["No unified model coupling export, polyadenylation, and metabolic gene regulation","Direct cellular mRNA target set across contexts undefined","Functional output of RSK phosphorylation unknown"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0003723","term_label":"RNA binding","supporting_discovery_ids":[0,2,3]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[0,2]}],"pathway":[{"term_id":"R-HSA-8953854","term_label":"Metabolism of RNA","supporting_discovery_ids":[0,2,3]},{"term_id":"R-HSA-9609507","term_label":"Protein localization","supporting_discovery_ids":[0,4]}],"complexes":["TREX complex"],"partners":["PABPN1","U2AF2","RPS6KA1","RPS6KA6"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"O75152","full_name":"Zinc finger CCCH domain-containing protein 11A","aliases":[],"length_aa":810,"mass_kda":89.1,"function":"Through its association with TREX complex components, may participate in the export and post-transcriptional coordination of selected mRNA transcripts, including those required to maintain the metabolic processes in embryonic cells (PubMed:22928037, PubMed:37356722). Binds RNA (PubMed:29610341, PubMed:37356722) (Microbial infection) Plays a role in efficient growth of several nuclear-replicating viruses such as HIV-1, influenza virus or herpes simplex virus 1/HHV-1. Required for efficient viral mRNA export (PubMed:29610341). May be required for proper polyadenylation of adenovirus type 5/HAdV-5 capsid mRNA (PubMed:37356722)","subcellular_location":"Nucleus; Nucleus speckle","url":"https://www.uniprot.org/uniprotkb/O75152/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/ZC3H11A","classification":"Not Classified","n_dependent_lines":13,"n_total_lines":381,"dependency_fraction":0.03412073490813648},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[{"gene":"RBM33","stoichiometry":4.0},{"gene":"CPSF6","stoichiometry":0.2},{"gene":"CTNNB1","stoichiometry":0.2},{"gene":"DDX21","stoichiometry":0.2},{"gene":"DDX39B","stoichiometry":0.2},{"gene":"DHX9","stoichiometry":0.2},{"gene":"EIF2AK2","stoichiometry":0.2},{"gene":"KPNA4","stoichiometry":0.2},{"gene":"MKI67","stoichiometry":0.2},{"gene":"PRPF4B","stoichiometry":0.2}],"url":"https://opencell.sf.czbiohub.org/search/ZC3H11A","total_profiled":1310},"omim":[{"mim_id":"613513","title":"ZINC FINGER CCCH DOMAIN-CONTAINING PROTEIN 11A; ZC3H11A","url":"https://www.omim.org/entry/613513"},{"mim_id":"613512","title":"ZINC FINGER BED DOMAIN-CONTAINING PROTEIN 6; ZBED6","url":"https://www.omim.org/entry/613512"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Approved","locations":[{"location":"Nuclear speckles","reliability":"Approved"}],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in all","driving_tissues":[],"url":"https://www.proteinatlas.org/search/ZC3H11A"},"hgnc":{"alias_symbol":["KIAA0663"],"prev_symbol":["ZC3HDC11A"]},"alphafold":{"accession":"O75152","domains":[{"cath_id":"3.30.1370","chopping":"2-59","consensus_level":"medium","plddt":87.1402,"start":2,"end":59},{"cath_id":"-","chopping":"60-100","consensus_level":"medium","plddt":87.1859,"start":60,"end":100}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/O75152","model_url":"https://alphafold.ebi.ac.uk/files/AF-O75152-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-O75152-F1-predicted_aligned_error_v6.png","plddt_mean":56.09},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=ZC3H11A","jax_strain_url":"https://www.jax.org/strain/search?query=ZC3H11A"},"sequence":{"accession":"O75152","fasta_url":"https://rest.uniprot.org/uniprotkb/O75152.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/O75152/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/O75152"}},"corpus_meta":[{"pmid":"25038754","id":"PMC_25038754","title":"Genome-wide 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During adenovirus infection, ZC3H11A and splicing factor SRSF2 relocalize to nuclear regions where viral DNA replication and transcription occur. CLIP-seq showed ZC3H11A binds short purine-rich ribonucleotide stretches in cellular and adenoviral transcripts. In ZC3H11A knockout HeLa cells, adenovirus fiber mRNA accumulates in the nucleus, demonstrating that RNA-binding is required for ZC3H11A's role in nuclear mRNA export. Multiple nuclear-replicating viruses (HIV, influenza, HSV, adenovirus) but not cytoplasmic-replicating viruses depend on ZC3H11A for efficient growth.\",\n      \"method\": \"CRISPR/Cas9 knockout, CLIP-seq (cross-linking immunoprecipitation sequencing), immunofluorescence/localization, RNA nuclear export assay\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple orthogonal methods (KO, CLIP-seq, localization, functional rescue) in a single focused study with clear phenotypic readout\",\n      \"pmids\": [\"29610341\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"ZC3H11A interacts with the splicing factor U2AF65 (U2AF2) as identified by yeast two-hybrid screening, suggesting a role in pre-mRNA splicing or U2AF65 sub-nuclear localization.\",\n      \"method\": \"Yeast two-hybrid\",\n      \"journal\": \"Biochimica et biophysica acta\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — single yeast two-hybrid assay, no biochemical confirmation reported in abstract\",\n      \"pmids\": [\"19540372\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"ZC3H11A protein interacts specifically with the nuclear poly(A)-binding protein PABPN1, which controls ZC3H11A localization into nuclear speckles. ZC3H11A uses the same zinc finger motifs to interact with PABPN1 and with adenovirus (HAdV-5) capsid mRNA. Loss of ZC3H11A alters polyadenylation of HAdV-5 capsid mRNA, indicating ZC3H11A acts as a novel regulator of mRNA polyadenylation.\",\n      \"method\": \"Co-immunoprecipitation (ZC3H11A interactome), RNA immunoprecipitation, mutagenesis of zinc finger motifs, polyadenylation assay in KO cells\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — reciprocal interactome, mutagenesis mapping interaction domain, functional polyadenylation assay in KO cells, multiple orthogonal methods in one study\",\n      \"pmids\": [\"37356722\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"Zc3h11a is essential for mouse embryonic viability; homozygous KO embryos degenerate around implantation (E6.5). Proteomic analysis in embryonic stem cells showed ZC3H11A tightly interacts with mRNA-export proteins. CLIP-seq demonstrated ZC3H11A binds a subset of mRNAs critical for metabolic regulation. Loss of Zc3h11a dysregulates glycolysis and fatty acid metabolic pathways (transcriptomics at E4.5), impairs differentiation toward epiblast-like cells, and reduces mitochondrial membrane potential in embryonic stem cells.\",\n      \"method\": \"Conditional and constitutive CRISPR/Cas9 knockout mice, transcriptomics, proteomics (interactome), CLIP-seq, mitochondrial membrane potential assay, in vitro differentiation assay\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple orthogonal methods (KO mouse, CLIP-seq, proteomics, transcriptomics, functional cellular assays) in a single rigorous study\",\n      \"pmids\": [\"37252988\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"Porcine ZC3H11A interacts with the TREX (transcription and export) complex and is required for mRNA export in pig cells. Knockout of porcine ZC3H11A via CRISPR/Cas9 significantly inhibits proliferation of pseudorabies virus (PRV) and porcine circovirus 2 (PCV2), consistent with a conserved role in mRNA export supporting nuclear-replicating virus growth.\",\n      \"method\": \"CRISPR/Cas9 knockout in PK-15 cells, Co-IP with TREX complex, viral growth assay\",\n      \"journal\": \"ACS infectious diseases\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — KO with defined viral phenotype plus TREX interaction, single lab, orthologous (porcine) system\",\n      \"pmids\": [\"35559610\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"ZC3H11A is a phosphorylation substrate of both RSK1 and RSK4 serine/threonine kinases (downstream of ERK1/2 MAPK pathway), as identified by analog-sensitive kinase strategy and validated by mutagenesis and kinase inhibitors.\",\n      \"method\": \"Analog-sensitive kinase substrate identification, mutagenesis, kinase inhibitor validation\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 1 / Weak — in vitro analog-sensitive kinase assay with mutagenesis validation, single study, substrate identity confirmed but functional consequence of phosphorylation not detailed\",\n      \"pmids\": [\"38342435\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"ZC3H11A is an extensively intrinsically disordered protein (810 aa) with only the N-terminal zinc finger domain (aa 1–86) being well structured. Substitution of Cys8 in the zinc finger did not abolish nucleic acid binding but stabilized the full-length protein. The protein forms monomers, dimers, tetramers and hexamers in solution.\",\n      \"method\": \"Recombinant protein expression (Sf9 insect cells, E. coli), mutagenesis (Cys8→Ala/Ser), size-exclusion chromatography, structural characterization\",\n      \"journal\": \"Protein expression and purification\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 1 / Weak — direct biochemical/structural characterization with mutagenesis, single study, limited functional follow-up\",\n      \"pmids\": [\"38969281\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"Knockdown of ZC3H11A using antisense oligonucleotides (ASO) or shRNA upregulates MHC class I antigen presentation, increases IFN-β secretion, induces apoptosis (caspase activation, annexin V), and triggers immunogenic cell death (calreticulin surface exposure, ATP secretion) leading to dendritic cell phagocytosis and maturation. Constitutive shRNA knockdown in B16 melanoma cells reduces tumor growth and prolongs survival in mice.\",\n      \"method\": \"ASO knockdown, shRNA lentiviral knockdown, flow cytometry (MHC I, annexin V, calreticulin), ELISA (IFN-β, ATP), in vivo tumor model\",\n      \"journal\": \"Molecular therapy. Nucleic acids\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — loss-of-function with multiple orthogonal protein-level readouts and in vivo validation, single lab\",\n      \"pmids\": [\"39582529\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"Missense mutations in ZC3H11A are associated with high myopia in humans. Zc3h11a KO mice develop myopia with upregulation of Tgfβ1, Mmp2, and Il6 in retina/sclera, bipolar cell dysfunction and loss, and ultrastructural abnormalities. Retinal transcriptomics identified 769 differentially expressed genes, and qPCR/western blotting confirmed ZC3H11A negatively regulates the PI3K-AKT and NF-κB signaling pathways.\",\n      \"method\": \"Whole exome sequencing (human cohort), Zc3h11a KO mouse model, electroretinography, immunofluorescence, transmission electron microscopy, retinal RNA-seq, qPCR, western blotting\",\n      \"journal\": \"eLife\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — KO mouse with multiple orthogonal phenotypic and molecular readouts, pathway placement by western blot, single lab\",\n      \"pmids\": [\"40864167\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"ZC3H11A is a stress-induced, largely intrinsically disordered nuclear RNA-binding protein that binds short purine-rich sequences via its N-terminal CCCH zinc finger domain; it associates with the TREX mRNA-export complex and with PABPN1 (which controls its localization to nuclear speckles), facilitates nuclear export and polyadenylation of a subset of mRNAs, is phosphorylated by RSK1/4 downstream of ERK1/2, and is essential for early mouse embryogenesis by maintaining metabolic gene expression—functions that multiple nuclear-replicating viruses exploit for their replication.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"ZC3H11A is a stress-induced, intrinsically disordered nuclear RNA-binding protein that promotes nuclear export and processing of a subset of cellular mRNAs and is exploited by nuclear-replicating viruses [#0, #4]. It binds short purine-rich ribonucleotide stretches through its sole structured element, an N-terminal CCCH zinc finger, with the remainder of the 810-residue protein being disordered [#0, #6]. The protein localizes to nuclear splicing speckles and uses its zinc finger motifs both to engage target transcripts and to interact with the nuclear poly(A)-binding protein PABPN1, which controls its speckle localization; through this association ZC3H11A regulates mRNA polyadenylation [#2]. It associates tightly with the TREX mRNA-export complex, and its loss causes nuclear accumulation of target mRNAs and impairs export, underlying the dependence of HIV, influenza, HSV, adenovirus, pseudorabies virus, and porcine circovirus 2 on ZC3H11A for efficient replication [#0, #4]. ZC3H11A is a phosphorylation substrate of the ERK1/2-downstream kinases RSK1 and RSK4 [#5]. In vivo, Zc3h11a is essential for early mouse embryogenesis, where it maintains expression of glycolytic and fatty-acid metabolic genes and mitochondrial function [#3]; its loss in tumor and tissue contexts engages immunogenic cell death and antigen-presentation pathways [#7] and, in the eye, links to high myopia with dysregulated PI3K-AKT and NF-\\u03baB signaling [#8].\",\n  \"teleology\": [\n    {\n      \"year\": 2009,\n      \"claim\": \"An initial interaction screen placed ZC3H11A in the nuclear pre-mRNA processing machinery by linking it to a core splicing factor, raising the question of whether it acts in splicing or splicing-factor localization.\",\n      \"evidence\": \"Yeast two-hybrid identifying interaction with U2AF65 (U2AF2)\",\n      \"pmids\": [\"19540372\"],\n      \"confidence\": \"Low\",\n      \"gaps\": [\"Single yeast two-hybrid with no biochemical confirmation\", \"Functional consequence of the interaction untested\", \"No mapping of interaction surface\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"Defined ZC3H11A's core molecular activity: a stress-induced speckle-localized RNA-binding protein that binds purine-rich motifs and is required for nuclear mRNA export, explaining why nuclear- but not cytoplasmic-replicating viruses depend on it.\",\n      \"evidence\": \"CRISPR/Cas9 knockout, CLIP-seq, immunofluorescence, and nuclear export assays in HeLa cells during adenovirus infection\",\n      \"pmids\": [\"29610341\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Export machinery partners not yet identified\", \"Cellular (non-viral) mRNA targets not defined\", \"Mechanism coupling RNA binding to export step unresolved\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Connected ZC3H11A's export function to a defined machinery by showing it associates with the TREX complex, and that this role is conserved and supports nuclear-replicating virus growth in a non-human system.\",\n      \"evidence\": \"CRISPR/Cas9 knockout, Co-IP with TREX complex, and viral growth assays in porcine PK-15 cells\",\n      \"pmids\": [\"35559610\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct vs indirect TREX contact not resolved\", \"Single lab, orthologous system\", \"Which TREX subunit ZC3H11A binds unknown\"]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"Identified PABPN1 as a key partner that localizes ZC3H11A to speckles and revealed a second molecular function—regulation of mRNA polyadenylation—mediated by the same zinc finger motifs used for RNA binding.\",\n      \"evidence\": \"Co-IP interactome, RNA immunoprecipitation, zinc-finger mutagenesis, and polyadenylation assays in KO cells\",\n      \"pmids\": [\"37356722\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether polyadenylation control extends to cellular transcripts beyond viral mRNA unclear\", \"Mechanism by which PABPN1 directs speckle localization not detailed\", \"Relationship between export and polyadenylation roles unresolved\"]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"Established the physiological essentiality of ZC3H11A, showing it is required for early embryogenesis through maintenance of metabolic gene expression and mitochondrial function, linking its mRNA-handling activity to a developmental program.\",\n      \"evidence\": \"Constitutive/conditional KO mice, CLIP-seq, proteomic interactome, transcriptomics, and mitochondrial/differentiation assays in embryonic stem cells\",\n      \"pmids\": [\"37252988\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct mRNA targets driving the metabolic phenotype not pinpointed\", \"Whether lethality reflects export vs polyadenylation defect unclear\", \"Causal link between mitochondrial defect and lethality not established\"]\n    },\n    {\n      \"year\": 2024,\n      \"claim\": \"Placed ZC3H11A as a downstream node of the ERK1/2 MAPK pathway by identifying it as a direct RSK1/RSK4 phosphorylation substrate, introducing a potential regulatory input to its activity.\",\n      \"evidence\": \"Analog-sensitive kinase substrate identification with mutagenesis and inhibitor validation\",\n      \"pmids\": [\"38342435\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Functional consequence of phosphorylation not determined\", \"Phosphosites' effect on RNA binding or localization untested\", \"In vivo relevance of the modification unknown\"]\n    },\n    {\n      \"year\": 2024,\n      \"claim\": \"Characterized the protein architecture, showing ZC3H11A is largely intrinsically disordered with only the N-terminal zinc finger structured, and that Cys8 contributes to protein stability rather than nucleic acid binding.\",\n      \"evidence\": \"Recombinant expression in Sf9/E. coli, Cys8 mutagenesis, and size-exclusion chromatography\",\n      \"pmids\": [\"38969281\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Functional role of oligomeric states untested\", \"No high-resolution structure of the zinc finger-RNA complex\", \"Role of disordered region in partner binding unmapped\"]\n    },\n    {\n      \"year\": 2024,\n      \"claim\": \"Revealed a cell-fate consequence of ZC3H11A loss: depletion triggers interferon, antigen presentation, and immunogenic cell death, with antitumor effect in vivo, positioning it as a survival/immune-evasion factor.\",\n      \"evidence\": \"ASO and shRNA knockdown with flow cytometry, ELISA, and an in vivo B16 melanoma model\",\n      \"pmids\": [\"39582529\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Molecular link between mRNA-export role and apoptosis/IFN induction not defined\", \"Direct effector transcripts unknown\", \"Single-lab in vivo result\"]\n    },\n    {\n      \"year\": 2025,\n      \"claim\": \"Linked ZC3H11A to a human Mendelian-type phenotype, high myopia, with a KO mouse recapitulating ocular pathology and implicating negative regulation of PI3K-AKT and NF-\\u03baB signaling.\",\n      \"evidence\": \"Whole exome sequencing of a human cohort plus Zc3h11a KO mouse with ERG, histology, retinal RNA-seq, qPCR, and western blotting\",\n      \"pmids\": [\"40864167\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Causal mechanism connecting RNA-handling to myopia unresolved\", \"Pathway placement rests on expression/western readouts\", \"Direct retinal mRNA targets not identified\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How ZC3H11A's RNA-export and polyadenylation activities are mechanistically integrated, and how phosphorylation, oligomerization, and partner binding tune target selection across development, immunity, and disease, remains unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"No unified model coupling export, polyadenylation, and metabolic gene regulation\", \"Direct cellular mRNA target set across contexts undefined\", \"Functional output of RSK phosphorylation unknown\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0003723\", \"supporting_discovery_ids\": [0, 2, 3]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0016607\", \"supporting_discovery_ids\": [0, 2]},\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [0, 2]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-8953854\", \"supporting_discovery_ids\": [0, 2, 3]},\n      {\"term_id\": \"R-HSA-9609507\", \"supporting_discovery_ids\": [0, 4]}\n    ],\n    \"complexes\": [\"TREX complex\"],\n    \"partners\": [\"PABPN1\", \"U2AF2\", \"RPS6KA1\", \"RPS6KA6\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":6,"faith_total":6,"faith_pct":100.0}}