5-HT1D receptor

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AliasesHTR1D, 5-HT1D, HT1DA, HTR1DA, HTRL, RDC4, 5-HT1D receptor, 5-hydroxytryptamine receptor 1D
External IDsOMIM: 182133 MGI: 96276 HomoloGene: 20240 GeneCards: HTR1D
RefSeq (mRNA)



RefSeq (protein)



Location (UCSC)Chr 1: 23.19 – 23.22 MbChr 4: 136.15 – 136.17 Mb
PubMed search[3][4]
View/Edit HumanView/Edit Mouse

5-hydroxytryptamine (serotonin) receptor 1D, also known as HTR1D, is a 5-HT receptor, but also denotes the human gene encoding it.[5] 5-HT1D acts on the central nervous system, and affects locomotion and anxiety. It also induces vasoconstriction in the brain.

Tissue distribution and function[edit]

5HT1D receptors are found at low levels in the basal ganglia (globus pallidus, substantia nigra, caudate putamen), the hippocampus, and in the cortex.[6]


5HT1D receptor is a G protein linked receptor that activates an intracellular messenger cascade to produce an inhibitory response by decreasing cellular levels of cAMP.[7][8] The 5HT1D is a 7-TM receptor. A large intercellular loop between TM-5 and TM-6 is believed to be associated with coupling to a second messenger. Agonists might bind in a manner that utilizes an aspartate residue in TM-3 and residues in the TM-4, TM-5 and TM-6.[9] A human clone containing an intronless open reading frame was found to encode 377 amino acids of the 5HT1D receptor. The gene has been localized on chromosome 1, region 1p34.3-36.3 [10][11]



Molecular modelling has provided a picture of the agonistic binding site of 5HT1D. The amino acid residues within the receptor binding site region have been identified. This is a valuable guide to design potential 5HT1D receptor agonists. When sumatriptan binds there is major conformational change in both ligand and receptor in the binding pocket.[12]


See also[edit]


  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000179546 - Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000070687 - Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ "Entrez Gene: HTR1D 5-hydroxytryptamine (serotonin) receptor 1D".
  6. ^ Hoyer, D., 2019. Serotonin receptors nomenclature. The Serotonin System, pp. 63–93.
  7. ^ Millan, M.J., et al., Signaling at G-protein-coupled serotonin receptors: recent advances and future research directions. Trends in Pharmacological Sciences, 2008. 29(9): pp. 454–464.
  8. ^ Goadsby, P.J., Serotonin 5-HT1B/1D receptor agonists in migraine - Comparative pharmacology and its therapeutic implications. Cns Drugs, 1998. 10(4): p. 271-286.
  9. ^ Lippincott, W. W., Lemke, T. L., Williams, D. A., Roche, V. F., & Zito, S. W. (2013). Foye's Principles of Medicinal Chemistry: Lippincott Williams & Wilkins: 368-376.
  10. ^ Jin, H.; Oksenberg, D.; Ashkenazi, A.; Peroutka, S. J.; Duncan, A. M.; Rozmahel, R.; O'Dowd, B. F. (1992). "Characterization of the human 5-hydroxytryptamine1B receptor". J Biol Chem. 267 (9): 5735–5738. doi:10.1016/S0021-9258(18)42612-9. PMID 1348246.
  11. ^ Weinshank, R. L.; Zgombick, J. M.; Macchi, M. J.; Branchek, T. A.; Hartig, P. R. (1992). "Human Serotonin-1d Receptor Is Encoded by a Subfamily of 2 Distinct Genes – 5-Ht(1d-Alpha) and 5-Ht(1d-Beta)". Proceedings of the National Academy of Sciences of the United States of America. 89 (8): 3630–3634. Bibcode:1992PNAS...89.3630W. doi:10.1073/pnas.89.8.3630. PMC 48922. PMID 1565658.
  12. ^ Bremner, D. H.; Ringan, N. S.; Wishart, G. (1997). "Modeling of the agonist binding site of serotonin human 5-HT1A, 5-HT1Dα and 5-HT1Dβ receptors". European Journal of Medicinal Chemistry. 32 (1): 59–69. doi:10.1016/S0223-5234(97)84362-0.
  13. ^ Glennon RA, Hong SS, Dukat M, Teitler M, Davis K (Sep 1994). "5-(Nonyloxy)tryptamine: a novel high-affinity 5-HT1D beta serotonin receptor agonist". Journal of Medicinal Chemistry. 37 (18): 2828–30. doi:10.1021/jm00044a001. PMID 8071931.
  14. ^ Xu YC, Schaus JM, Walker C, Krushinski J, Adham N, Zgombick JM, Liang SX, Kohlman DT, Audia JE (Feb 1999). "N-Methyl-5-tert-butyltryptamine: A novel, highly potent 5-HT1D receptor agonist". Journal of Medicinal Chemistry. 42 (3): 526–31. doi:10.1021/jm9805945. PMID 9986723.

External links[edit]

  • "5-HT1D". IUPHAR Database of Receptors and Ion Channels. International Union of Basic and Clinical Pharmacology.
  • Human HTR1D genome location and HTR1D gene details page in the UCSC Genome Browser.

Further reading[edit]

This article incorporates text from the United States National Library of Medicine, which is in the public domain.