Seroatlas · Human Serome Atlas

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 WTW

LocalizationUniProt · 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

Molecular functions

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.

Canonical record: https://seroatlas.com/gene/NKX2-2. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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