Gene Information
Gene NameHTR3B
OrganismHomo sapiens (Human)
Gene Length441
Protein Names5-hydroxytryptamine receptor 3B (5-HT3-B) (5-HT3B) (Serotonin receptor 3B)
Target Name5-ht 3b receptor
Target TypeDiscontinued target
Gene Age645 ( ENSG00000149305 )
Evolutionary StageEumetazoa
AlphaFoldDBO95264
Gene CardHTR3B
Uniprot IDO95264
PfamPF02931; PF02932
In ASDno
Allosteric Predictionyes (0.650420737)
Ortholog in AnimalsAlpaca_ HTR3B ( ortholog_one2one )
Dog_ HTR3B ( ortholog_one2one )
GuineaPig_ HTR3B ( ortholog_one2one )
Macaque_ HTR3B ( ortholog_one2one )
Mouse_ Htr3b ( ortholog_one2one )
Pig_ HTR3B ( ortholog_one2one )
Rat_ Htr3b ( ortholog_one2one )
Rabbit_ HTR3B ( ortholog_one2one )
OhnologsNA
ParalogsCHRNB1, GABRR2, CHRNA6, CHRNB4, CHRNA4, GABRQ, HTR3E, CHRNA1, CHRNA3, GABRA5, GLRA2, GLRA1, GABRG3, GABRA2, GABRB3, GABRP, HTR3C, HTR3D, GABRG1, CHRNA7, CHRFAM7A, GABRD, GABRR1, CHRNA5, GABRA6, GABRA4, GLRA3, GABRE, CHRNE, GABRG2, CHRND, CHRNA2, CHRNA10, CHRNA9, GABRA3, HTR3A, ZACN, CHRNB3, CHRNB2, CHRNG, GABRR3, GABRB2, GABRB1, GABRA1, GLRB
TissueNA
Tissue SpecificityExpressed in the brain cortex, in the caudate nucleus, the hippocampus, the thalamus and the amygdala. Detected in the kidney and testis as well as in monocytes of the spleen, small and large intestine, uterus, prostate, ovary and placenta. {ECO:0000269|PubMed:10521471, ECO:0000269|PubMed:9950429}.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB NA 
DBSNP rs1176744  rs34550504  rs72466469  rs17116138 
Subcellular location [CC]Cell membrane {ECO:0000269|PubMed:21138434};
Multi-pass membrane protein {ECO:0000269|PubMed:21138434}. Note=Presumably retained within the endoplasmic reticulum unless complexed with HTR3A.
Mouse PG classificationNA
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