Affinage

ZNF462

Zinc finger protein 462 · UniProt Q96JM2

Length
2506 aa
Mass
284.7 kDa
Annotated
2026-06-11
18 papers in source corpus 8 papers cited in narrative 9 extracted findings
Cross-family judge vs UniProt: Affinage preferred faithfulness: 6/6 claims corpus-supported (100%)

Mechanistic narrative

Synthesis pass · prose summary of the discoveries below

ZNF462 (ZFP462) is a vertebrate nuclear zinc finger protein that functions as a locus- and lineage-specific chromatin regulator during development (PMID:36604593). Its best-defined mechanism is the recruitment of the H3K9 histone methyltransferase complex G9A/GLP (EHMT2) to transposable element-associated enhancers carrying pluripotency and meso-endodermal transcription factor binding sites, where it seeds heterochromatin, restricts transcription factor binding, and silences germ-layer genes to safeguard neural lineage specification in embryonic stem cells (PMID:36604593). Beyond enhancer silencing, ZFP462 maintains pericentromeric heterochromatin integrity and HP1alpha distribution specifically in pluripotent cells, where its loss derepresses satellite repeats and triggers cell death (PMID:20219459), and it is required to sustain pluripotency gene expression (Nanog, Oct4, Sox2) while suppressing premature neuronal differentiation (PMID:21570965). ZNF462 also acts as a positive co-regulator of transcription through a physical complex with the histone acetyltransferase MOZ and the transcription factor RUNX2, enhancing RUNX2 activity and H3 acetylation to drive osteoblast differentiation and bone formation (PMID:41992429). In the brain, ZFP462 stabilizes its binding partner PBX1 by preventing its ubiquitin-mediated degradation, supporting hippocampal neurogenesis and anxiety-related behavior, and is itself repressed by miR-377-3p targeting its 3'UTR (PMID:37817032, PMID:19111535). Consistent with these roles, ZFP462 is maternally required for proper gastrulation and faithful cell division in early vertebrate embryos (PMID:19111535).

Mechanistic history

Synthesis pass · year-by-year structured walk · 8 steps
  1. 2008 Medium

    Established the first molecular handle on ZFP462 by identifying it as a nuclear PBX1-interacting protein and showing it is maternally required for early embryonic cell division.

    Evidence Yeast two-hybrid with PBX1 bait plus morpholino knockdown and immunofluorescence in Xenopus embryos

    PMID:19111535

    Open questions at the time
    • PBX1 interaction rests on a single yeast two-hybrid without reciprocal validation
    • Molecular basis of the mitotic defect (direct chromatin role vs. indirect) not resolved
    • No mapping of which zinc fingers mediate binding
  2. 2010 Medium

    Showed ZFP462 maintains heterochromatin architecture selectively in pluripotent cells, the first link to chromatin organization rather than a single transcription factor.

    Evidence shRNA knockdown in P19 vs. 3T3 cells with HP1alpha immunofluorescence and satellite repeat RT-PCR

    PMID:20219459

    Open questions at the time
    • Mechanism of how ZFP462 protects pericentromeric heterochromatin not defined
    • No identification of recruited chromatin machinery at this stage
    • Cell-type specificity of the effect unexplained at the molecular level
  3. 2011 Medium

    Connected ZFP462 chromatin function to the pluripotency program, showing it sustains Nanog/Oct4/Sox2 expression and restrains premature neural differentiation.

    Evidence Inducible shRNA knockdown in P19 cells with marker RT-PCR/immunofluorescence and proliferation assays

    PMID:21570965

    Open questions at the time
    • Direct vs. indirect regulation of pluripotency genes not distinguished
    • No genome-wide binding data to define direct targets
    • Single cell-line model
  4. 2016 Medium

    Placed ZFP462 in an in vivo developmental and behavioral pathway upstream of Pbx1 and Hoxb8, linking the gene to anxiety-related grooming behavior.

    Evidence Zfp462 knockout mice with grooming microstructure assays, RT-PCR, and pharmacological rescue with imipramine

    PMID:27621227

    Open questions at the time
    • Pathway placement inferred from mRNA level changes, not direct epistasis
    • Homozygous lethality limits analysis to heterozygotes
    • Mechanism connecting ZFP462 to Pbx1/Hoxb8 levels not addressed
  5. 2023 High

    Defined the central enhancer-silencing mechanism: ZFP462 confers locus and lineage specificity to the G9A/GLP H3K9 methyltransferase at transposable-element enhancers to restrict meso-endodermal genes during neural specification.

    Evidence Epigenetic screen, ChIP-seq, ATAC-seq, RNA-seq, and co-IP with G9A/GLP plus loss-of-function in mouse ESCs

    PMID:36604593

    Open questions at the time
    • Structural basis of ZFP462-G9A/GLP recruitment not resolved
    • How ZFP462 reads target enhancer/TE sequence not defined
    • Relationship to its pericentromeric heterochromatin role unclear
  6. 2023 Medium

    Provided a mechanism for the ZFP462-PBX1 relationship and its upstream control, showing ZFP462 stabilizes PBX1 protein against ubiquitin-mediated degradation and is itself repressed by miR-377-3p to govern hippocampal neurogenesis.

    Evidence Immunoprecipitation, dual-luciferase 3'UTR reporter, western blotting, and in vivo miR-377-3p antagomir injection with neurogenesis assays in mouse

    PMID:37817032

    Open questions at the time
    • Whether ZFP462 directly shields PBX1 or acts via an intermediary not established
    • Identity of the responsible E3 ligase unknown
    • Single-lab study
  7. 2024 Medium

    Refined the ZFP462-EHMT2 model by showing their co-repression of germ-layer genes occurs at non-repeat enhancers, distinct from EHMT2's LINE-1-mediated repression of totipotency genes.

    Evidence Acute protein depletion, ChIP-seq, RNA-seq and genetic interaction analysis in mouse ESCs (preprint)

    PMID:bio_10.1101_2024.12.18.629181

    Open questions at the time
    • Not yet peer-reviewed
    • Reconciliation with the TE-enhancer model from earlier work incomplete
    • Determinants of repeat vs. non-repeat target choice undefined
  8. 2026 Medium

    Extended ZNF462 to a positive transcriptional co-activator role, identifying a ZNF462-MOZ-RUNX2 complex that drives osteoblast differentiation via H3 acetylation and showing age-related decline in ZNF462 expression in bone.

    Evidence Reciprocal co-IP, osteoblast-specific conditional knockout mice with bone phenotyping, ChIP for H2A.Z/H3K4me3, and RUNX2 reporter assays

    PMID:41992429

    Open questions at the time
    • How ZNF462 switches between repressive (G9A/GLP) and activating (MOZ) chromatin roles is unknown
    • Direct vs. bridging interactions within the ternary complex not dissected
    • Single-lab study

Open questions

Synthesis pass · forward-looking unresolved questions
  • It remains unknown how ZNF462 selects between opposing chromatin outcomes — repressive H3K9 methylation via G9A/GLP versus activating H3 acetylation via MOZ — and what sequence or context determines its locus targeting.
  • No structural model of ZNF462 DNA/chromatin recognition
  • No unifying account of repressive vs. activating recruitment
  • Human disease relevance not established in the available corpus

Mechanism profile

Synthesis pass · controlled-vocabulary classification · explore literature graph →
Molecular activity
GO:0098772 molecular function regulator activity 3 GO:0140110 transcription regulator activity 2 GO:0003677 DNA binding 1
Localization
GO:0000228 nuclear chromosome 2 GO:0005634 nucleus 1
Pathway
R-HSA-1266738 Developmental Biology 3 R-HSA-4839726 Chromatin organization 3 R-HSA-74160 Gene expression (Transcription) 2
Partners
EHMT1EHMT2MOZPBX1RUNX2
Complex memberships
ZNF462-MOZ-RUNX2 complex

Evidence

Reading pass · 9 per-paper findings extracted from the source corpus
Year Finding Method Journal Conf PMIDs
2023 ZFP462 (murine ZNF462) recruits the H3K9-specific histone methyltransferase complex G9A/GLP to transposable elements that act as enhancers harboring pluripotency and meso-endodermal transcription factor binding sites, seeding heterochromatin and restricting transcription factor binding. Loss of ZFP462 in mouse ESCs increases chromatin accessibility at these target sites and causes ectopic expression of meso-endodermal genes, demonstrating that ZFP462 confers lineage and locus specificity to G9A/GLP during neural lineage specification. Epigenetic screen in mouse ESCs, ChIP-seq, ATAC-seq, RNA-seq, ZFP462 loss-of-function in ESCs, co-immunoprecipitation/interaction studies with G9A/GLP complex Nature cell biology High 36604593
2024 EHMT2 (G9A) represses germ layer-associated transcripts in collaboration with ZFP462 (mouse homolog of ZNF462), with this co-repression occurring at non-repeat enhancers rather than LINE-1 elements — mechanistically distinguishing the ZFP462-dependent EHMT2 function from its LINE-1-mediated repression of totipotency genes. Acute protein depletion (multipurpose allele), ChIP-seq, RNA-seq in mouse ESCs, genetic interaction analysis bioRxivpreprint Medium bio_10.1101_2024.12.18.629181
2008 ZFPIP/Zfp462 (Xenopus ortholog of ZNF462) is maternally required for proper gastrulation; morpholino knockdown causes failure of blastopore closure and aberrant mitosis including abnormal metaphase/anaphase/telophase figures, incomplete chromosome segregation, and conjoined nuclei, placing ZFP462 as a nuclear factor required for correct cell division in early vertebrate embryogenesis. Morpholino knockdown in Xenopus laevis embryos, immunofluorescence, expression analysis Developmental biology Medium 19111535
2010 Knockdown of ZFPIP/Zfp462 in pluripotent P19 cells (but not differentiated 3T3 cells) causes cell death accompanied by complete destructuration of pericentromeric heterochromatin domains, redistribution of HP1alpha protein, and increased transcription of satellite DNA repeats, establishing a role for ZFP462 in maintaining chromatin integrity specifically in pluripotent cells. shRNA knockdown in P19 and 3T3 cells, immunofluorescence for HP1alpha, RT-PCR for satellite transcripts, cell viability assays Experimental cell research Medium 20219459
2011 Inducible knockdown of ZFPIP/Zfp462 in pluripotent P19 cells impairs mitosis and self-renewal, substantially decreases expression of pluripotency genes Nanog, Oct4, and Sox2, and transiently induces neuronal differentiation markers, establishing ZFP462 as a chromatin factor required for maintaining pluripotency and suppressing early neural differentiation. Inducible shRNA knockdown in P19 cells, RT-PCR/immunofluorescence for pluripotency and neuronal markers, cell proliferation assays Experimental cell research Medium 21570965
2016 Heterozygous knockout of Zfp462 in mice (Zfp462+/-) produces anxiety-like behaviors with excessive self-grooming, impaired grooming patterning, developmental delay, reduced brain weight, and decreased mRNA levels of Pbx1 and Hoxb8 in the brain; homozygous knockout causes prenatal lethality. These behaviors were rescued by imipramine. This places ZFP462 upstream of Pbx1 and Hoxb8 in a pathway controlling anxiety-related grooming behavior. PiggyBac transposon-generated Zfp462 KO mice, behavioral assays (grooming microstructure), RT-PCR for Pbx1/Hoxb8, pharmacological rescue with imipramine Genes, brain, and behavior Medium 27621227
2023 Zfp462 deficiency promotes ubiquitin-mediated degradation of Pbx1 protein; Zfp462 heterozygous mice show downregulation of the Pbx1-Akt-GSK3β-CREB signaling pathway and reduced hippocampal neurogenesis. miR-377-3p directly targets the 3'UTR of Zfp462 mRNA to suppress Zfp462 expression, linking upstream miRNA regulation to the ZFP462-Pbx1 axis. Immunoprecipitation, dual-luciferase reporter assay (miR-377-3p targeting Zfp462 3'UTR), western blotting, immunofluorescence, gene knockdown, miR-377-3p antagomir microinjection into hippocampal dentate gyrus, neurogenesis assays Molecular neurobiology Medium 37817032
2026 ZNF462, MOZ (a histone acetyltransferase), and RUNX2 physically interact with each other; this ZNF462-MOZ-RUNX2 axis promotes osteoblastic bone formation by increasing RUNX2 transcriptional activity and histone H3 acetylation. Osteoblast-specific Zfp462 deficiency in mice reduces bone mass and strength due to impaired osteoblast function. Aging decreases ZNF462 expression in bone cells through reduced occupancy of histone variant H2A.Z at the ZNF462 locus, leading to lower H3K4me3. Co-immunoprecipitation of ZNF462/MOZ/RUNX2 complex, osteoblast-specific Zfp462 conditional knockout mice, bone mass/strength measurements, ChIP for H2A.Z and H3K4me3, reporter assays for RUNX2 activity Aging cell Medium 41992429
2008 ZFPIP/Zfp462 was originally identified as a Pbx1-interacting protein via yeast two-hybrid screen using embryonic mouse cDNA library with PBX1 as bait; the protein contains a bipartite NLS and is localized to the nucleus. Yeast two-hybrid screen, nuclear localization by immunostaining in Xenopus embryos Developmental biology Low 19111535

Source papers

Stage 0 corpus · 18 papers · ranked by NIH iCite citations
Year Title Journal Citations PMID
2019 Phenotype delineation of ZNF462 related syndrome. American journal of medical genetics. Part A 35 31361404
2017 Haploinsufficiency of ZNF462 is associated with craniofacial anomalies, corpus callosum dysgenesis, ptosis, and developmental delay. European journal of human genetics : EJHG 35 28513610
2016 Zfp462 deficiency causes anxiety-like behaviors with excessive self-grooming in mice. Genes, brain, and behavior 35 27621227
2023 ZFP462 safeguards neural lineage specification by targeting G9A/GLP-mediated heterochromatin to silence enhancers. Nature cell biology 24 36604593
2008 ZFPIP/Zfp462 is maternally required for proper early Xenopus laevis development. Developmental biology 18 19111535
2018 ZNF462 and KLF12 are disrupted by a de novo translocation in a patient with syndromic intellectual disability and autism spectrum disorder. European journal of medical genetics 16 29427787
2011 ZFPIP/Zfp462 is involved in P19 cell pluripotency and in their neuronal fate. Experimental cell research 16 21570965
2010 Involvement of ZFPIP/Zfp462 in chromatin integrity and survival of P19 pluripotent cells. Experimental cell research 12 20219459
2020 A novel mutation in the ZNF462 gene c.3306dup; p.(Gln1103Thrfs*10) is associated to Weiss-Kruszka syndrome. A case report. Acta clinica Belgica 11 32543299
2006 Graded expression of Zfp462 in the embryonic mouse cerebral cortex. Gene expression patterns : GEP 11 17207666
2022 Further characterization of the 9q31 microdeletion phenotype; delineation of a common region of overlap containing ZNF462. Molecular genetics & genomic medicine 8 36461789
2022 Case report: A heterozygous mutation in ZNF462 leads to growth hormone deficiency. Frontiers in genetics 7 36568367
2024 Phenotypic spectrum in Weiss-Kruszka syndrome caused by ZNF462 variants: Three new patients and literature review. European journal of medical genetics 5 39069253
2023 miR-377-3p Regulates Hippocampal Neurogenesis via the Zfp462-Pbx1 Pathway and Mediates Anxiety-Like Behaviors in Prenatal Hypoxic Offspring. Molecular neurobiology 5 37817032
2022 A Nonsense Variant of ZNF462 Gene Associated With Weiss-Kruszka Syndrome-Like Manifestations: A Case Study and Literature Review. Frontiers in genetics 5 35198003
2026 Zfp462 Is a Key Mediator of Osteoblast Differentiation and Might Contribute to Age-Related Bone Loss. Aging cell 0 41992429
2025 First Report of a Novel ZNF462 Variant Linked to Weiss-Kruszka Syndrome and Congenital Diaphragmatic Hernia: Insights into Potential Additional Malformations. Molecular syndromology 0 40538467
2025 [Genetic analysis of a patient with Weiss-Kruszka syndrome due to variant of ZNF462 gene]. Zhonghua yi xue yi chuan xue za zhi = Zhonghua yixue yichuanxue zazhi = Chinese journal of medical genetics 0 40623936

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