Vasoactive intestinal peptide receptor
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There are two known receptors for the vasoactive intestinal peptide(VIP) termed VPAC1 and VPAC2. These receptors bind both VIP and pituitary adenylate cyclase-activating polypeptide to some degree. Both receptors are members of the 7 transmembrane [[g protein-coupled family of receptors.
VPAC1 is distributed widely in the CNS, liver, lung, intestine and T-lymphocytes. VPAC2 is found in the CNS, pancreas, skeletal muscle, heart, kidney, adipose tissue, testis, and stomach.
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