5-hydroxytryptamine receptor 3A is a protein that in humans is encoded by the HTR3Agene.[5][6]
The product of this gene belongs to the ligand-gated ion channel receptor superfamily. This gene encodes subunit A of the type 3 receptor for 5-hydroxytryptamine (serotonin), a biogenic hormone that functions as a neurotransmitter, a hormone, and a mitogen. This receptor causes fast, depolarizing responses in neurons after activation. The A subunit is the only one that can be expressed alone and forms homomers with a very low single channel conductance of 0.6pS. When combined with the B subunit and expressed as a heteromer, the single channel conductance increases immensely. Alternatively spliced transcript variants encoding different isoforms have been identified.[7]
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
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Miyake A, Mochizuki S, Takemoto Y, Akuzawa S (1995). "Molecular cloning of human 5-hydroxytryptamine3 receptor: heterogeneity in distribution and function among species". Mol. Pharmacol. 48 (3): 407–416. PMID7565620.
Belelli D, Balcarek JM, Hope AG, et al. (1996). "Cloning and functional expression of a human 5-hydroxytryptamine type 3AS receptor subunit". Mol. Pharmacol. 48 (6): 1054–1062. PMID8848005.
Brüss M, Göthert M, Hayer M, Bönisch H (1999). "Molecular cloning of alternatively spliced human 5-HT3 receptor cDNAs". Ann. N. Y. Acad. Sci. 861: 234–235. doi:10.1111/j.1749-6632.1998.tb10196.x. PMID9928262.
Boyd GW, Low P, Dunlop JI, et al. (2002). "Assembly and cell surface expression of homomeric and heteromeric 5-HT3 receptors: the role of oligomerization and chaperone proteins". Mol. Cell. Neurosci. 21 (1): 38–50. doi:10.1006/mcne.2002.1160. PMID12359150. S2CID37832903.
Hapfelmeier G, Haseneder R, Lampadius K, et al. (2003). "Cloned human and murine serotonin(3A) receptors expressed in human embryonic kidney 293 cells display different single-channel kinetics". Neurosci. Lett. 335 (1): 44–48. doi:10.1016/S0304-3940(02)01156-4. PMID12457738. S2CID35192275.
Pick H, Preuss AK, Mayer M, et al. (2003). "Monitoring expression and clustering of the ionotropic 5HT3 receptor in plasma membranes of live biological cells". Biochemistry. 42 (4): 877–884. doi:10.1021/bi026576d. PMID12549905.
Maksay G, Bikádi Z, Simonyi M (2004). "Binding interactions of antagonists with 5-hydroxytryptamine3A receptor models". J. Recept. Signal Transduct. Res. 23 (2–3): 255–270. doi:10.1081/RRS-120025568. PMID14626451. S2CID26799630.
Kaiser R, Tremblay PB, Sezer O, et al. (2004). "Investigation of the association between 5-HT3A receptor gene polymorphisms and efficiency of antiemetic treatment with 5-HT3 receptor antagonists". Pharmacogenetics. 14 (5): 271–278. doi:10.1097/00008571-200405000-00001. PMID15115912.