GP6
Platelet glycoprotein VI
Also known as: GPVI, GPVI_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q9HCN6
- Gene
- GP6
- Ensembl
- ENSG00000088053
- Chromosome
- 19
- Canonical length
- 339 aa
- Protein class
- Disease related genes, Human disease related genes, Plasma proteins, Predicted intracellular proteins, Predicted membrane proteins
- Subcellular location
- Plasma membrane
- Secretome location
- Intracellular and membrane
OverviewNCBI Gene
This gene encodes a platelet membrane glycoprotein of the immunoglobulin superfamily. The encoded protein is a receptor for collagen and plays a critical role in collagen-induced platelet aggregation and thrombus formation. The encoded protein forms a complex with the Fc receptor gamma-chain that initiates the platelet activation signaling cascade upon collagen binding. Mutations in this gene are a cause of platelet-type bleeding disorder-11 (BDPLT11). Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2011]
Canonical amino-acid sequenceUniProt
339 residues, UniProt reviewed canonical sequence.
>Q9HCN6|GP6
1 MSPSPTALFC LGLCLGRVPA QSGPLPKPSL QALPSSLVPL EKPVTLRCQG PPGVDLYRLE
61 KLSSSRYQDQ AVLFIPAMKR SLAGRYRCSY QNGSLWSLPS DQLELVATGV FAKPSLSAQP
121 GPAVSSGGDV TLQCQTRYGF DQFALYKEGD PAPYKNPERW YRASFPIITV TAAHSGTYRC
181 YSFSSRDPYL WSAPSDPLEL VVTGTSVTPS RLPTEPPSPV AEFSEATAEL TVSFTNEVFT
241 TETSRSITAS PKESDSPAGP ARQYYTKGNL VRICLGAVIL IILAGFLAED WHSRRKRLRH
301 RGRAVQRPLP PLPPLPLTRK SNGGQDGGRQ DVHSRGLCSLocalizationUniProt · AlphaFold · HPA
Whether an antibody against GP6 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
- 1
- Mean surface accessibility (rSASA)
- 0.48
- Highest tissue expression
- 2.5 nTPM
Expression across tissuesHPA
Tissue
- testis: 2.5 nTPM
- cerebellum: 2.3 nTPM
- esophagus: 1.3 nTPM
- skin: 1.1 nTPM
- vagina: 1.1 nTPM
- cerebral cortex: 1 nTPM
Single-cell type
- platelets: 16 nCPM
- papillary tip epithelial cells: 13 nCPM
- renal connecting tubule cells: 9.7 nCPM
- brain excitatory neurons: 8.7 nCPM
- brain inhibitory neurons: 8.6 nCPM
- renal collecting duct principal cells: 8.4 nCPM
Immune cell
- total PBMC: 1.2 nTPM
- neutrophil: 0.3 nTPM
- basophil: 0 nTPM
- classical monocyte: 0 nTPM
- eosinophil: 0 nTPM
- gdT-cell: 0 nTPM
Brain region
- cerebellum: 3.7 nTPM
- cerebral cortex: 3.4 nTPM
- amygdala: 2.4 nTPM
- hypothalamus: 2.3 nTPM
- basal ganglia: 2.1 nTPM
- hippocampal formation: 2.1 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about GP6.
Disease | AllUniProt
Conditions GP6 is implicated in, by any mechanism.
- Bleeding disorder, platelet-type, 11 (BDPLT11) MIM:614201
Disease | GeneticClinVar
19 pathogenic / likely-pathogenic of 349 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Platelet-type bleeding disorder 11
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)
- 1.61
- gnomAD pLI
- 0
- gnomAD missense Z
- -0.42
- DepMap mean gene effect
- 0
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- collagen-activated signaling pathway
- collagen-activated tyrosine kinase receptor signaling pathway
- enzyme-linked receptor protein signaling pathway
- immune response-regulating signaling pathway
- platelet activation
- platelet aggregation
- positive regulation of platelet aggregation
Molecular functions
- collagen binding
- collagen receptor activity
- protein tyrosine kinase binding
- signaling receptor activity
- transmembrane signaling receptor activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of GP6 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 GP6 as an antibody target. Whether an autoantibody or antibody against GP6 could matter depends on whether native GP6 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
GP6 is annotated at the cell surface, where native GP6 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 GP6 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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