Gene Information
Gene NameHTR3A
OrganismHomo sapiens (Human)
Gene Length478
Protein Names5-hydroxytryptamine receptor 3A (5-HT3-A) (5-HT3A) (5-hydroxytryptamine receptor 3) (5-HT-3) (5-HT3R) (Serotonin receptor 3A) (Serotonin-gated ion channel receptor)
Target Name5-hydroxytryptamine 3 receptor
Target TypeNA
Gene Age645 ( ENSG00000166736 )
Evolutionary StageVertebrata
AlphaFoldDBP46098
Gene CardHTR3A
Uniprot IDP46098
PfamPF02931; PF02932
In ASDyes
Allosteric Predictionyes (1.187803763)
Ortholog in AnimalsAlpaca_ HTR3A ( ortholog_one2one )
Dog_ HTR3A ( ortholog_one2one )
GuineaPig_ HTR3A ( ortholog_one2one )
Macaque_ HTR3A ( ortholog_one2one )
Mouse_ Htr3a ( ortholog_one2one )
Pig_ HTR3A ( ortholog_one2one )
Rat_ Htr3a ( ortholog_one2one )
Rabbit_ HTR3A ( ortholog_one2one )
OhnologsNA
ParalogsCHRNB1, GABRR2, CHRNA6, CHRNB4, CHRNA4, GABRQ, HTR3E, CHRNA1, CHRNA3, GABRA5, GLRA2, HTR3B, GLRA1, GABRG3, GABRA2, GABRB3, GABRP, HTR3C, HTR3D, GABRG1, CHRNA7, CHRFAM7A, GABRD, GABRR1, CHRNA5, GABRA6, GABRA4, GLRA3, GABRE, CHRNE, GABRG2, CHRND, CHRNA2, CHRNA10, CHRNA9, GABRA3, ZACN, CHRNB3, CHRNB2, CHRNG, GABRR3, GABRB2, GABRB1, GABRA1, GLRB
TissueNA
Tissue SpecificityExpressed in cerebral cortex, amygdala, hippocampus, and testis. Detected in monocytes of the spleen and tonsil, in small and large intestine, uterus, prostate, ovary and placenta. {ECO:0000269|PubMed:10521471}.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB NA 
DBSNP rs117793058  rs4938063  rs35815285  rs183698487 
Subcellular location [CC]Postsynaptic cell membrane;
Multi-pass membrane protein. Cell membrane;
Multi-pass membrane protein.
Mouse PG classificationNA
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