CRHR2
Corticotropin-releasing factor receptor 2
Also known as: CRF-RB, CRF2, CRFR2_HUMAN, HM-CRF
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q13324
- Gene
- CRHR2
- Ensembl
- ENSG00000106113
- Chromosome
- 7
- Canonical length
- 411 aa
- Protein class
- G-protein coupled receptors, Predicted membrane proteins, Predicted secreted proteins
- Subcellular location
- Plasma membrane
- Secretome location
- Secreted - unknown location
OverviewNCBI Gene
The protein encoded by this gene belongs to the G-protein coupled receptor 2 family, and the subfamily of corticotropin releasing hormone receptor. This receptor shows high affinity for corticotropin releasing hormone (CRH), and also binds CRH-related peptides such as urocortin. CRH is synthesized in the hypothalamus, and plays an important role in coordinating the endocrine, autonomic, and behavioral responses to stress and immune challenge. Studies in mice suggest that this receptor maybe involved in mediating cardiovascular homeostasis. Alternatively spliced transcript variants encoding different isoforms have been described for this gene.[provided by RefSeq, Jan 2011]
Canonical amino-acid sequenceUniProt
411 residues, UniProt reviewed canonical sequence.
>Q13324|CRHR2
1 MDAALLHSLL EANCSLALAE ELLLDGWGPP LDPEGPYSYC NTTLDQIGTC WPRSAAGALV
61 ERPCPEYFNG VKYNTTRNAY RECLENGTWA SKINYSQCEP ILDDKQRKYD LHYRIALVVN
121 YLGHCVSVAA LVAAFLLFLA LRSIRCLRNV IHWNLITTFI LRNVMWFLLQ LVDHEVHESN
181 EVWCRCITTI FNYFVVTNFF WMFVEGCYLH TAIVMTYSTE RLRKCLFLFI GWCIPFPIIV
241 AWAIGKLYYE NEQCWFGKEP GDLVDYIYQG PIILVLLINF VFLFNIVRIL MTKLRASTTS
301 ETIQYRKAVK ATLVLLPLLG ITYMLFFVNP GEDDLSQIMF IYFNSFLQSF QGFFVSVFYC
361 FFNGEVRSAV RKRWHRWQDH HSLRVPMARA MSIPTSPTRI SFHSIKQTAA VLocalizationUniProt · AlphaFold · HPA
Whether an antibody against CRHR2 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)
- 0.36
- Highest tissue expression
- 21 nTPM
Expression across tissuesHPA
Tissue
- choroid plexus: 21 nTPM
- pituitary gland: 3.9 nTPM
- cerebral cortex: 2.5 nTPM
- retina: 2.3 nTPM
- heart muscle: 2.1 nTPM
- tongue: 2 nTPM
Single-cell type
- choroid plexus epithelial cells: 72 nCPM
- retinal amacrine cells: 36 nCPM
- retinal horizontal cells: 26 nCPM
- epicardial cells: 23 nCPM
- thyrotrophs: 16 nCPM
- pericytes: 13 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
- choroid plexus: 48 nTPM
- cerebral cortex: 15 nTPM
- hypothalamus: 8 nTPM
- white matter: 7.3 nTPM
- hippocampal formation: 7.2 nTPM
- basal ganglia: 5.4 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)
- 1.28
- gnomAD pLI
- 0
- gnomAD missense Z
- 0.75
- DepMap mean gene effect
- 0.12
- DepMap dependency class
- none
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
- adenylate cyclase-modulating G protein-coupled receptor signaling pathway
- cell surface receptor signaling pathway
- long-term synaptic potentiation
Molecular functions
- corticotrophin-releasing factor receptor activity
- corticotropin-releasing hormone receptor activity
- G protein-coupled peptide receptor activity
- peptide hormone binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
- GPCR, family 2, secretin-like
- GPCR, family 2, extracellular hormone receptor domain
- GPCR, family 2, corticotropin releasing factor receptor
- GPCR, family 2-like, 7TM
- GPCR, family 2, secretin-like, conserved site
- GPCR family 2, extracellular hormone receptor domain superfamily
- G-protein coupled receptor 2
- 7 transmembrane receptor (Secretin family)
- Hormone receptor domain
- GPCR, family 2, corticotropin releasing factor receptor, type 2
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of CRHR2 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 CRHR2 as an antibody target. Whether an autoantibody or antibody against CRHR2 could matter depends on whether native CRHR2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
CRHR2 is annotated at the cell surface, where native CRHR2 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 CRHR2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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