KLF12
Krueppel-like factor 12
Also known as: AP-2rep, AP2REP, HSPC122, KLF12_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q9Y4X4
- Gene
- KLF12
- Ensembl
- ENSG00000118922
- Chromosome
- 13
- Canonical length
- 402 aa
- Protein class
- Predicted intracellular proteins, Transcription factors
- Subcellular location
- Nucleoplasm,Cytosol
OverviewNCBI Gene
Activator protein-2 alpha (AP-2 alpha) is a developmentally-regulated transcription factor and important regulator of gene expression during vertebrate development and carcinogenesis. The protein encoded by this gene is a member of the Kruppel-like zinc finger protein family and can repress expression of the AP-2 alpha gene by binding to a specific site in the AP-2 alpha gene promoter. Repression by the encoded protein requires binding with a corepressor, CtBP1. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
402 residues, UniProt reviewed canonical sequence.
>Q9Y4X4|KLF12
1 MNIHMKRKTI KNINTFENRM LMLDGMPAVR VKTELLESEQ GSPNVHNYPD MEAVPLLLNN
61 VKGEPPEDSL SVDHFQTQTE PVDLSINKAR TSPTAVSSSP VSMTASASSP SSTSTSSSSS
121 SRLASSPTVI TSVSSASSSS TVLTPGPLVA SASGVGGQQF LHIIHPVPPS SPMNLQSNKL
181 SHVHRIPVVV QSVPVVYTAV RSPGNVNNTI VVPLLEDGRG HGKAQMDPRG LSPRQSKSDS
241 DDDDLPNVTL DSVNETGSTA LSIARAVQEV HPSPVSRVRG NRMNNQKFPC SISPFSIEST
301 RRQRRSESPD SRKRRIHRCD FEGCNKVYTK SSHLKAHRRT HTGEKPYKCT WEGCTWKFAR
361 SDELTRHYRK HTGVKPFKCA DCDRSFSRSD HLALHRRRHM LVLocalizationUniProt · AlphaFold · HPA
Whether an antibody against KLF12 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Intracellular
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.65
- Highest tissue expression
- 11 nTPM
Expression across tissuesHPA
Tissue
- lymph node: 11 nTPM
- epididymis: 11 nTPM
- thymus: 9.6 nTPM
- tonsil: 9.3 nTPM
- liver: 9.2 nTPM
- retina: 8.2 nTPM
Single-cell type
- myonuclei: 816 nCPM
- t-cells: 703 nCPM
- nk-cells: 691 nCPM
- corticotrophs: 620 nCPM
- thyrotrophs: 617 nCPM
- oligodendrocyte progenitor cells: 607 nCPM
Immune cell
- MAIT T-cell: 2.7 nTPM
- memory CD8 T-cell: 2.5 nTPM
- gdT-cell: 2.2 nTPM
- naive CD8 T-cell: 2.1 nTPM
- memory CD4 T-cell: 2 nTPM
- NK-cell: 1.5 nTPM
Brain region
- hippocampal formation: 18 nTPM
- cerebellum: 18 nTPM
- thalamus: 17 nTPM
- cerebral cortex: 17 nTPM
- midbrain: 16 nTPM
- hypothalamus: 15 nTPM
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 0.29
- gnomAD pLI
- 0.98
- gnomAD missense Z
- 1.79
- DepMap mean gene effect
- 0.07
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- negative regulation of transcription by RNA polymerase II
- positive regulation of transcription by RNA polymerase II
- regulation of transcription by RNA polymerase II
Molecular functions
- DNA binding
- DNA-binding transcription factor activity
- DNA-binding transcription factor activity, RNA polymerase II-specific
- DNA-binding transcription repressor activity, RNA polymerase II-specific
- RNA polymerase II cis-regulatory region sequence-specific DNA binding
- sequence-specific double-stranded DNA binding
- zinc ion binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of KLF12 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads KLF12 as an antibody target. Whether an autoantibody or antibody against KLF12 could matter depends on whether native KLF12 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
KLF12 is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label KLF12 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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