Aliases for HTR3B Gene
External Ids for HTR3B Gene
Previous GeneCards Identifiers for HTR3B Gene
The product of this gene belongs to the ligand-gated ion channel receptor superfamily. This gene encodes subunit B 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. It is not functional as a homomeric complex, but a pentaheteromeric complex with subunit A (HTR3A) displays the full functional features of this receptor. [provided by RefSeq, Aug 2011]
GeneCards Summary for HTR3B Gene
HTR3B (5-Hydroxytryptamine Receptor 3B) is a Protein Coding gene. Diseases associated with HTR3B include Myasthenic Syndrome, Congenital, 15 and Fibromyalgia. Among its related pathways are Transport of glucose and other sugars, bile salts and organic acids, metal ions and amine compounds and Taste transduction. Gene Ontology (GO) annotations related to this gene include ion channel activity and G protein-coupled serotonin receptor activity. An important paralog of this gene is HTR3A.
UniProtKB/Swiss-Prot Summary for HTR3B Gene
This is one of the several different receptors for 5-hydroxytryptamine (serotonin), a biogenic hormone that functions as a neurotransmitter, a hormone, and a mitogen. This receptor is a ligand-gated ion channel, which when activated causes fast, depolarizing responses. It is a cation-specific, but otherwise relatively nonselective, ion channel.
Serotonin 5-HT3 receptors, are ligand-gated ion channels of the Cys-loop family. The receptor consists of four transmembrane domains that form an intrinsic cation-selective channel. So far five human 5-HT3 receptor subtypes have been identified (5-HT3A-E).