Neuropeptide Y receptor

Neuropeptide Y receptors are a class of G-protein coupled receptors which are activated by the closely related peptide hormones neuropeptide Y, peptide YY and pancreatic polypeptide. These receptors are involved in control of a diverse set of behavioral processes including appetite, circadian rhythm, and anxiety.

Activated neuropeptide receptors release the Gi subunit from the heterotrimeric G protein complex. The Gi subunit in turn inhibits the production of the second messenger cAMP from ATP.

Types
There are five known mammalian neuropeptide Y receptors designated Y1 through Y5. Four neuropeptide Y receptors each encoded by a different gene have been identified in humans, all of which may represent therapeutic targets for obesity and other disorders.
 * Y1 -
 * Y2 -
 * Y4 -
 * Y5 -