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Details on Person UniProt:Q9Y2T6 GPR55

Class:IdReferenceGeneProduct:231010
_chainChangeLogchain:1-319 added on Sat February 7 2015
_displayNameUniProt:Q9Y2T6 GPR55
_timestamp2026-02-20 23:05:58
chainchain:1-319
checksumD6E5C6CA8426E7D5
commentFUNCTION G-protein coupled receptor that binds to several ligands including 2-arachidonoyl lysophosphatidylinositol or lysophosphatidylglucoside with high affinity, leading to rapid and transient activation of numerous intracellular signaling pathways (PubMed:36142844, PubMed:36523570, PubMed:37544935). Induces the Ca(2+) release from intracellular stores via ERK, the heterotrimeric G protein GNA13 and RHOA leading to morphological changes including cell rounding and stress fiber formation (PubMed:36142844). In macrophages, acts downstream of lysophosphatidylglucoside to inhibit the translocation of the phospholipid-transporting ABCA1 to plasma membrane and subsequent cholesterol efflux leading to lipid accumulation and foam cell formation (PubMed:37544935).SUBCELLULAR LOCATION Expressed in the caudate nucleus and putamen, but not detected in the hippocampus, thalamus, pons cerebellum, frontal cortex of the brain or in the liver. Expressed in osteoclasts and osteoblasts. Highly expressed in macrophages and B-cells (PubMed:36523570, PubMed:37544935).MISCELLANEOUS The classification of this protein as a cannabinoid receptor remains a contentious issue due to conflicting pharmacological results.SIMILARITY Belongs to the G-protein coupled receptor 1 family.
created[InstanceEdit:217385] Schmidt, EE, 2008-03-27 06:23:53
descriptionrecommendedName: G-protein coupled receptor 55
geneNameGPR55
identifierQ9Y2T6
isSequenceChangedFALSE
keyword3D-structure
Cell membrane
G-protein coupled receptor
Glycoprotein
Membrane
Proteomics identification
Receptor
Reference proteome
Transducer
Transmembrane
Transmembrane helix
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9862192] Weiser, Joel, 2024-02-26
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
[InstanceEdit:9948485] Weiser, Joel, 2025-05-21
[InstanceEdit:9983091] Weiser, Joel, 2026-02-20
nameGPR55
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:8996601] ENSEMBL:ENSG00000135898 GPR55 [Homo sapiens]
secondaryIdentifierGPR55_HUMAN
Q8N580
sequenceLength319
species[Species:48887] Homo sapiens
(referenceEntity)[EntityWithAccessionedSequence:444504] GPR55 [plasma membrane] [Homo sapiens]
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No pathways have been reviewed or authored by UniProt:Q9Y2T6 GPR55 (231010)