cation channel complex serotonin receptor complex neurotransmitter receptor complex serotonin-activated cation-selective channel complex https://github.com/geneontology/go-ontology/issues/12942 5-hydroxytryptamine receptor 3 complex GO:1904602 An example of this is HTR3A in human (P46098) in PMID:16116092 (inferred from direct assay). 2015-08-26T13:19:49Z bhm 5-HT-3 receptor complex cellular_component serotonin receptor complex A protein complex which is capable of serotonin-activated cation-selective channel activity. Mainly found in pre- and postsynaptic membranes of the brain and gastrointestinal tract. Depending on its location it transports Ca2+, Mg2+, Na+ or K+. It is always a pentamer, containing at least the 5HT3A subunit forming 5HT3A homopentamers or 5HT3A/B heteropentamers. In human, 5HT3A/C, A/D and A/E heteropentamers also exist. 5-HT3 receptor complex 5HT3 receptor complex