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 WLocalizationUniProt · 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.
- Conotruncal heart malformations (CTHM) MIM:217095
Disease | GeneticClinVar
4 pathogenic / likely-pathogenic of 131 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Conotruncal heart malformations
- Persistent truncus arteriosus
- Cerebral palsy
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
- atrial cardiac muscle cell development
- cell differentiation
- digestive tract development
- embryonic heart tube development
- epithelial cell apoptotic process
- epithelial cell differentiation
- epithelial cell proliferation
- hypothalamus development
- negative regulation of apoptotic process
- negative regulation of epithelial cell apoptotic process
- pericardium development
- pharyngeal system development
- positive regulation of cell population proliferation
- positive regulation of epithelial cell proliferation
- positive regulation of transcription by RNA polymerase II
- regulation of transcription by RNA polymerase II
- tongue development
- ventricular cardiac muscle cell development
Molecular functions
- DNA-binding transcription activator activity, RNA polymerase II-specific
- DNA-binding transcription factor activity
- 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
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.
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