Galanin, human

Galanin, a 29 or 30 (in human) amino acid neuropeptide, is found in the central and peripheral nervous systems and displays several important physiological activities. These actions are mediated through distinct G protein-coupled receptors. It is involved in regulation of food intake, metabolism and reproduction, regulation of neurotransmitter and hormone release, nociception, intestinal contraction and secretion, and more recently in nervous system development and response to injury.