Gene Information
Gene NameHTR4
OrganismHomo sapiens (Human)
Gene Length388
Protein Names5-hydroxytryptamine receptor 4 (5-HT-4) (5-HT4) (Serotonin receptor 4)
Target Name5-ht 4 receptor
Target TypeSuccessful target
Gene Age645 ( ENSG00000164270 )
Evolutionary StageEumetazoa
AlphaFoldDBQ13639
Gene CardHTR4
Uniprot IDQ13639
PfamPF00001
In ASDyes
Allosteric Predictionyes (1.26604802)
Ortholog in AnimalsAlpaca_ HTR4 ( ortholog_one2one )
Dog_ HTR4 ( ortholog_one2one )
GuineaPig_ HTR4 ( ortholog_one2one )
Macaque_ HTR4 ( ortholog_one2one )
Mouse_ Htr4 ( ortholog_one2one )
Pig_ HTR4 ( ortholog_one2one )
Rat_ Htr4 ( ortholog_one2one )
Rabbit_ HTR4 ( ortholog_one2one )
OhnologsADRA1A, HTR7, ADRA1D, DRD5
ParalogsHRH2, TAAR6, DRD4, HRH1, DRD1, GPR52, HTR1A, HTR1D, CHRM3, CHRM4, HRH3, TAAR5, TAAR1, GPR21, CHRM1, HRH4, TAAR9, CHRM5, TAAR8, DRD3, GPR84, CHRM2, GPR161, DRD5, TAAR2
TissueNA
Tissue SpecificityIsoform 5-HT4(A) is expressed in ileum, brain, and atrium, but not in the ventricle. {ECO:0000269|PubMed:15118808}.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 5EM9  (X-ray  1.60A  7XT8  (EM  3.10A  7XT9  (EM  3.20A  7XTA  (EM  3.20A 
DBSNP rs199508638  rs34826744 
Subcellular location [CC]Cell membrane;
Multi-pass membrane protein. Endosome. Note=Interaction with SNX27 mediates recruitment to early endosomes, while interaction with SLC9A3R1 and EZR might target the protein to specialized subcellular regions, such as microvilli. {ECO:0000250}.
Mouse PG classificationNA
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