GPR151
G-protein coupled receptor 151
Also known as: GALR4, GP151_HUMAN, PGR7
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q8TDV0
- Gene
- GPR151
- Ensembl
- ENSG00000173250
- Chromosome
- 5
- Canonical length
- 419 aa
- Protein class
- G-protein coupled receptors, Predicted membrane proteins
OverviewNCBI Gene
This gene encodes an orphan member of the class A rhodopsin-like family of G-protein-coupled receptors (GPCRs). Within the rhodopsin-like family, this gene is a member of the SOG subfamily that includes somatostatin, opioid, galanin, and kisspeptin receptors. The orthologous mouse gene has a restricted pattern of neuronal expression which is induced following nerve injury. All GPCRs have a transmembrane domain that includes seven transmembrane alpha-helices. A general feature of GPCR signaling is the agonist-induced conformational change in the receptor, leading to activation of the heterotrimeric G protein. The activated G protein then binds to and activates numerous downstream effector proteins, which generate second messengers that mediate a broad range of cellular and physiological processes. [provided by RefSeq, Jul 2017]
Canonical amino-acid sequenceUniProt
419 residues, UniProt reviewed canonical sequence.
>Q8TDV0|GPR151
1 MLAAAFADSN SSSMNVSFAH LHFAGGYLPS DSQDWRTIIP ALLVAVCLVG FVGNLCVIGI
61 LLHNAWKGKP SMIHSLILNL SLADLSLLLF SAPIRATAYS KSVWDLGWFV CKSSDWFIHT
121 CMAAKSLTIV VVAKVCFMYA SDPAKQVSIH NYTIWSVLVA IWTVASLLPL PEWFFSTIRH
181 HEGVEMCLVD VPAVAEEFMS MFGKLYPLLA FGLPLFFASF YFWRAYDQCK KRGTKTQNLR
241 NQIRSKQVTV MLLSIAIISA LLWLPEWVAW LWVWHLKAAG PAPPQGFIAL SQVLMFSISS
301 ANPLIFLVMS EEFREGLKGV WKWMITKKPP TVSESQETPA GNSEGLPDKV PSPESPASIP
361 EKEKPSSPSS GKGKTEKAEI PILPDVEQFW HERDTVPSVQ DNDPIPWEHE DQETGEGVKLocalizationUniProt · AlphaFold · HPA
Whether an antibody against GPR151 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
- 7
- Mean surface accessibility (rSASA)
- 0.38
- Highest tissue expression
- 0.5 nTPM
Expression across tissuesHPA
Tissue
- spinal cord: 0.5 nTPM
- cerebral cortex: 0.2 nTPM
- retina: 0.2 nTPM
- basal ganglia: 0.1 nTPM
- midbrain: 0.1 nTPM
- adipose tissue: 0 nTPM
Single-cell type
- cone photoreceptor cells: 2.1 nCPM
- thymic myoid cells: 1.4 nCPM
- late spermatids: 1.2 nCPM
- pituitary stem cells: 0.8 nCPM
- retinal amacrine cells: 0.7 nCPM
- mesothelial cells: 0.4 nCPM
Immune cell
- naive B-cell: 0.1 nTPM
- basophil: 0 nTPM
- classical monocyte: 0 nTPM
- eosinophil: 0 nTPM
- gdT-cell: 0 nTPM
- intermediate monocyte: 0 nTPM
Brain region
- midbrain: 18 nTPM
- cerebral cortex: 0.8 nTPM
- basal ganglia: 0.7 nTPM
- cerebellum: 0.7 nTPM
- white matter: 0.6 nTPM
- hypothalamus: 0.5 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)
- 1.5
- gnomAD pLI
- 0
- gnomAD missense Z
- 0.14
- DepMap mean gene effect
- -0.06
- 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
- G protein-coupled receptor signaling pathway
- positive regulation of immune response
- regulation of synaptic vesicle exocytosis
- response to acidic pH
- response to ischemia
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads GPR151 as an antibody target. Whether an autoantibody or antibody against GPR151 could matter depends on whether native GPR151 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
GPR151 is annotated at the cell surface, where native GPR151 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 GPR151 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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