Gene Information
Gene NameHCAR3
OrganismHomo sapiens (Human)
Gene Length387
Protein NamesHydroxycarboxylic acid receptor 3 (G-protein coupled receptor 109B) (G-protein coupled receptor HM74) (G-protein coupled receptor HM74B) (Niacin receptor 2) (Nicotinic acid receptor 2)
Target Namehydroxycarboxylic acid receptor 3
Target TypeNA
Gene Age645 ( ENSG00000255398 )
Evolutionary StageEumetazoa
AlphaFoldDBP49019
Gene CardHCAR3
Uniprot IDP49019
PfamPF00001
In ASDno
Allosteric Predictionyes (1.216025944)
Ortholog in AnimalsAlpaca_ HCAR3 ( ortholog_one2one )
Dog_ HCAR2 ( ortholog_one2many )
Mouse_ Hcar2 ( ortholog_one2many )
Rat_ Hcar2 ( ortholog_one2many )
OhnologsNA
ParalogsP2RY2, P2RY4, OXGR1, P2RY1, SUCNR1, P2RY6, FFAR3, GPR42, FFAR2, HCAR2, HCAR1, OXER1, GPR31, FFAR1, GPR82
Tissuespleen, tongue, whole.blood
Tissue SpecificityExpression largely restricted to adipose tissue and spleen. {ECO:0000269|PubMed:12522134}.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB NA 
DBSNP rs1798192  rs17884481  rs118091133  rs116821988  rs1696351  rs201835480 
Subcellular location [CC]Cell membrane;
Multi-pass membrane protein.
Mouse PG classificationNA
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