TRBV9
T cell receptor beta variable 9
Also known as: TCRBV1S1A1N1, TCRBV9S1, TVB9_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- A0A0B4J1U6
- Gene
- TRBV9
- Ensembl
- ENSG00000211716
- Chromosome
- 7
- Canonical length
- 114 aa
- Protein class
- Predicted intracellular proteins, T-cell receptor genes
- Quaternary structure
- Homodimer
OverviewNCBI Gene
Predicted to be involved in cell surface receptor signaling pathway. Predicted to be part of T cell receptor complex. Predicted to be active in plasma membrane. [provided by Alliance of Genome Resources, Apr 2025]
Canonical amino-acid sequenceUniProt
114 residues, UniProt reviewed canonical sequence.
>A0A0B4J1U6|TRBV9
1 MGFRLLCCVA FCLLGAGPVD SGVTQTPKHL ITATGQRVTL RCSPRSGDLS VYWYQQSLDQ
61 GLQFLIHYYN GEERAKGNIL ERFSAQQFPD LHSELNLSSL ELGDSALYFC ASSVLocalizationUniProt · AlphaFold · HPA
Whether an antibody against TRBV9 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
- Cell surface
- Secreted
- No
- Transmembrane segments
- 0
- Highest tissue expression
- 8.5 nTPM
Expression across tissuesHPA
Tissue
- thymus: 8.5 nTPM
- spleen: 2.8 nTPM
- tonsil: 2.7 nTPM
- testis: 2.4 nTPM
- small intestine: 1.9 nTPM
- urinary bladder: 1.4 nTPM
Single-cell type
- late primary spermatocytes: 0.6 nCPM
- early spermatids: 0.3 nCPM
- t-cells: 0.2 nCPM
- goblet cells: 0.1 nCPM
- adipocytes: 0 nCPM
- adrenal cortex cells: 0 nCPM
Immune cell
- T-reg: 27 nTPM
- memory CD8 T-cell: 22 nTPM
- memory CD4 T-cell: 20 nTPM
- naive CD4 T-cell: 15 nTPM
- naive CD8 T-cell: 13 nTPM
- total PBMC: 5.6 nTPM
Brain region
- medulla oblongata: 0.3 nTPM
- cerebral cortex: 0.2 nTPM
- white matter: 0.2 nTPM
- amygdala: 0.1 nTPM
- basal ganglia: 0.1 nTPM
- hippocampal formation: 0.1 nTPM
OntologyGO
Biological processes
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads TRBV9 as an antibody target. Whether an autoantibody or antibody against TRBV9 could matter depends on whether native TRBV9 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
TRBV9 is annotated at the cell surface, where native TRBV9 is exposed to circulating antibodies and is a prime autoantibody target that could block, deplete, or overstimulate it.
Annotation status
The present source text does not explicitly label TRBV9 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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