Gene Information
Gene NameHTR1A
OrganismHomo sapiens (Human)
Gene Length422
Protein Names5-hydroxytryptamine receptor 1A (5-HT-1A) (5-HT1A) (G-21) (Serotonin receptor 1A)
Target Name5-ht 1a receptor
Target TypeSuccessful target
Gene Age950 ( ENSG00000178394 )
Evolutionary StageEumetazoa
AlphaFoldDBP08908
Gene CardHTR1A
Uniprot IDP08908
PfamPF00001
In ASDyes
Allosteric Predictionyes (1.497303511)
Ortholog in AnimalsAlpaca_ HTR1A ( ortholog_one2one )
GuineaPig_ HTR1A ( ortholog_one2one )
Macaque_ HTR1A ( ortholog_one2one )
Mouse_ Htr1a ( ortholog_one2one )
Pig_ HTR1A ( ortholog_one2one )
Rabbit_ HTR1A ( ortholog_one2one )
OhnologsHTR1B, HTR1E, ADRA1B, HTR1F
ParalogsHRH2, TAAR6, DRD4, HRH1, DRD1, GPR52, CHRM3, CHRM4, HRH3, TAAR5, HTR4, TAAR1, GPR21, CHRM1, HRH4, TAAR9, CHRM5, TAAR8, DRD3, GPR84, CHRM2, GPR161, DRD5, TAAR2, HTR1D
TissueNA
Tissue SpecificityDetected in lymph nodes, thymus and spleen. Detected in activated T-cells, but not in resting T-cells. {ECO:0000269|PubMed:3041227, ECO:0000269|PubMed:8393041}.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 7E2X  (EM  3.00A  7E2Y  (EM  3.00A  7E2Z  (EM  3.10A 
DBSNP rs1800041  rs1799920  rs1799921  rs1800043  rs1800044  rs1800042 
Subcellular location [CC]Cell membrane {ECO:0000269|PubMed:22957663, ECO:0000269|PubMed:3041227, ECO:0000269|PubMed:3138543, ECO:0000269|PubMed:8393041};
Multi-pass membrane protein {ECO:0000269|PubMed:22957663, ECO:0000269|PubMed:3041227, ECO:0000269|PubMed:3138543, ECO:0000269|PubMed:8393041}. Cell projection, dendrite {ECO:0000250|UniProtKB:P19327}.
Mouse PG classificationNA
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