NKX2-2
Homeobox protein Nkx-2.2
Also known as: NKX2.2, NKX22_HUMAN, NKX2B
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- O95096
- Gene
- NKX2-2
- Ensembl
- ENSG00000125820
- Chromosome
- 20
- Canonical length
- 273 aa
- Protein class
- Predicted intracellular proteins, Transcription factors
OverviewNCBI Gene
The protein encoded by this gene contains a homeobox domain and may be involved in the morphogenesis of the central nervous system. This gene is found on chromosome 20 near NKX2-4, and these two genes appear to be duplicated on chromosome 14 in the form of TITF1 and NKX2-8. The encoded protein is likely to be a nuclear transcription factor. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
273 residues, UniProt reviewed canonical sequence.
>O95096|NKX2-2
1 MSLTNTKTGF SVKDILDLPD TNDEEGSVAE GPEEENEGPE PAKRAGPLGQ GALDAVQSLP
61 LKNPFYDSSD NPYTRWLAST EGLQYSLHGL AAGAPPQDSS SKSPEPSADE SPDNDKETPG
121 GGGDAGKKRK RRVLFSKAQT YELERRFRQQ RYLSAPEREH LASLIRLTPT QVKIWFQNHR
181 YKMKRARAEK GMEVTPLPSP RRVAVPVLVR DGKPCHALKA QDLAAATFQA GIPFSAYSAQ
241 SLQHMQYNAQ YSSASTPQYP TAHPLVQAQQ WTWLocalizationUniProt · AlphaFold · HPA
Whether an antibody against NKX2-2 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)
- 0.63
- Highest tissue expression
- 42 nTPM
Expression across tissuesHPA
Tissue
- spinal cord: 42 nTPM
- midbrain: 16 nTPM
- hippocampal formation: 11 nTPM
- hypothalamus: 11 nTPM
- amygdala: 9.4 nTPM
- basal ganglia: 8.1 nTPM
Single-cell type
- neuroendocrine cells: 122 nCPM
- bergmann glia: 114 nCPM
- oligodendrocytes: 73 nCPM
- pancreatic islet cells: 71 nCPM
- oligodendrocyte progenitor cells: 57 nCPM
- somatotrophs: 32 nCPM
Immune cell
- basophil: 0 nTPM
- classical monocyte: 0 nTPM
- eosinophil: 0 nTPM
- gdT-cell: 0 nTPM
- intermediate monocyte: 0 nTPM
- MAIT T-cell: 0 nTPM
Brain region
- white matter: 78 nTPM
- medulla oblongata: 68 nTPM
- basal ganglia: 56 nTPM
- pons: 51 nTPM
- midbrain: 49 nTPM
- cerebellum: 48 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)
- 0.67
- gnomAD pLI
- 0.41
- gnomAD missense Z
- 0
- DepMap mean gene effect
- 0.11
- DepMap dependency class
- none
OntologyGO
Biological processes
- astrocyte differentiation
- brain development
- cell differentiation
- digestive tract development
- negative regulation of neuron differentiation
- neuroendocrine cell differentiation
- neuron fate specification
- oligodendrocyte development
- optic nerve development
- pancreatic A cell fate commitment
- pancreatic PP cell fate commitment
- positive regulation of epithelial cell differentiation
- positive regulation of gene expression
- positive regulation of neuron differentiation
- positive regulation of oligodendrocyte differentiation
- regulation of transcription by RNA polymerase II
- response to glucose
- response to progesterone
- smoothened signaling pathway
- spinal cord motor neuron differentiation
- spinal cord oligodendrocyte cell fate specification
- type B pancreatic cell development
- type B pancreatic cell fate commitment
- ventral spinal cord interneuron fate determination
Molecular functions
- cis-regulatory region sequence-specific DNA binding
- DNA-binding transcription activator activity, RNA polymerase II-specific
- DNA-binding transcription factor activity, RNA polymerase II-specific
- RNA polymerase II cis-regulatory region sequence-specific DNA binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of NKX2-2 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 NKX2-2 as an antibody target. Whether an autoantibody or antibody against NKX2-2 could matter depends on whether native NKX2-2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
NKX2-2 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 NKX2-2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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