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Query author contributions in Reactome

Reactome depends on collaboration between our curation team and outside experts to assemble and peer-review its pathway modules. The integration of ORCID within Reactome enables us to meet a key challenge with authoring, curating and reviewing biological information by incentivizing and crediting the external experts that contribute their expertise and time to the Reactome curation process. More information is available at ORCID and Reactome.

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Details on Person UniProt:P49019 HCAR3

Class:IdReferenceGeneProduct:56572
_chainChangeLogchain:1-387 added on Sat February 7 2015
_displayNameUniProt:P49019 HCAR3
_timestamp2026-02-20 22:55:16
chainchain:1-387
checksum887BA427B6134A3F
commentFUNCTION G-protein coupled receptor for 3-hydroxyoctanoate, a fatty acid beta-oxidation intermediate. Signals through the inhibitory G(i)/o family of G-proteins (PubMed:19561068, PubMed:37736747, PubMed:39427321). Acts as a negative feedback regulator of adipocyte lipolysis, helping to counterbalance prolipolytic signals during physiological or pathological elevations in beta-oxidation (PubMed:19561068). Acts as a low affinity receptor for nicotinic acid. This pharmacological effect requires nicotinic acid doses that are much higher than those provided by a normal diet (PubMed:12522134).SUBCELLULAR LOCATION Expression largely restricted to adipose tissue and spleen.MISCELLANEOUS Exists only in humans and higher primates.SIMILARITY Belongs to the G-protein coupled receptor 1 family.
descriptionrecommendedName: Hydroxycarboxylic acid receptor 3 alternativeName: G-protein coupled receptor 109B alternativeName: fullName evidence="13"G-protein coupled receptor HM74 alternativeName: G-protein coupled receptor HM74B alternativeName: Niacin receptor 2 alternativeName: Nicotinic acid receptor 2
geneNameHCAR3
GPR109B
HCA3
HM74B
NIACR2
identifierP49019
isSequenceChangedFALSE
keyword3D-structure
Cell membrane
Disulfide bond
G-protein coupled receptor
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:9983091] Weiser, Joel, 2026-02-20
nameHCAR3
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:8993661] ENSEMBL:ENSG00000255398 HCAR3 [Homo sapiens]
secondaryIdentifierHCAR3_HUMAN
A8K4G5
B2R830
E9PI97
Q8NGE4
sequenceLength387
species[Species:48887] Homo sapiens
(referenceEntity)[EntityWithAccessionedSequence:444718] HCAR3 [plasma membrane] [Homo sapiens]
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No pathways have been reviewed or authored by UniProt:P49019 HCAR3 (56572)