Function
The gene described in this record is a member of 5-hydroxytryptamine receptor family and encodes a multi-pass membrane protein that functions as a receptor for 5-hydroxytryptamine and couples to G proteins, negatively influencing cAMP levels via Gi and Go. This protein has been shown to function in part through the regulation of intracellular Ca2+ mobilization.
Rodents have been shown to possess two functional 5-HT5 receptor subtypes, 5-HT5A and 5-HT5B, however while humans possess a gene coding for the 5-HT5B subtype, its coding sequence is interrupted by stop codons making the gene non-functional, and so only the 5-HT5A subtype is expressed in human brain.
It also appears to serve as an presynaptic serotonin autoreceptor.
Read more about this topic: 5-HT5A Receptor
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