Seroatlas · Human Serome Atlas

NKX2-6

Homeobox protein Nkx-2.6

Also known as: CSX2, NKX26_HUMAN, NKX4-2

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
A6NCS4
Gene
NKX2-6
Ensembl
ENSG00000180053
Chromosome
8
Canonical length
301 aa
Protein class
Disease related genes, Human disease related genes, Predicted intracellular proteins, Transcription factors
Subcellular location
Nucleoplasm,Nuclear membrane,Cytosol

OverviewNCBI Gene

This gene encodes a homeobox-containing protein that belongs to the NK-2 homeobox family. This protein is a vertebrate homolog of Drosophila homeobox-containing protein called 'tinman', which has been shown to be essential for development of the heart-like dorsal vessel. In conjunction with related gene, NKX2-5, this gene may play a role in both pharyngeal and cardiac embryonic development. Mutations in this gene are associated with persistent truncus arteriosus.[provided by RefSeq, Aug 2011]

Canonical amino-acid sequenceUniProt

301 residues, UniProt reviewed canonical sequence.

>A6NCS4|NKX2-6
     1  MLLSPVTSTP FSVKDILRLE RERSCPAASP HPRVRKSPEN FQYLRMDAEP RGSEVHNAGG
    61  GGGDRKLDGS EPPGGPCEAV LEMDAERMGE PQPGLNAASP LGGGTRVPER GVGNSGDSVR
   121  GGRSEQPKAR QRRKPRVLFS QAQVLALERR FKQQRYLSAP EREHLASALQ LTSTQVKIWF
   181  QNRRYKCKRQ RQDKSLELAG HPLTPRRVAV PVLVRDGKPC LGPGPGAPAF PSPYSAAVSP
   241  YSCYGGYSGA PYGAGYGTCY AGAPSGPAPH TPLASAGFGH GGQNATPQGH LAATLQGVRA
   301  W

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against NKX2-6 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)
0.66
Highest tissue expression
1.5 nTPM

Expression across tissuesHPA

Tissue

  • salivary gland: 1.5 nTPM
  • heart muscle: 1 nTPM
  • adipose tissue: 0 nTPM
  • adrenal gland: 0 nTPM
  • amygdala: 0 nTPM
  • appendix: 0 nTPM

Single-cell type

  • cardiomyocytes: 3.8 nCPM
  • submucosal glandular cells: 2.2 nCPM
  • late spermatids: 0.3 nCPM
  • early spermatids: 0.2 nCPM
  • papillary tip epithelial cells: 0.2 nCPM
  • prostatic glandular cells: 0.2 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

  • cerebral cortex: 0.2 nTPM
  • amygdala: 0 nTPM
  • basal ganglia: 0 nTPM
  • cerebellum: 0 nTPM
  • choroid plexus: 0 nTPM
  • hippocampal formation: 0 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about NKX2-6.

Disease | AllUniProt

Conditions NKX2-6 is implicated in, by any mechanism.

Disease | GeneticClinVar

4 pathogenic / likely-pathogenic of 131 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

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)
1.03
gnomAD pLI
0.02
gnomAD missense Z
0.26

OntologyGO

Biological processes

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads NKX2-6 as an antibody target. Whether an autoantibody or antibody against NKX2-6 could matter depends on whether native NKX2-6 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

NKX2-6 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 NKX2-6 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/NKX2-6. 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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