Description
Gastric inhibitory peptide (GIP) is an endogenous peptide hormone analog of somatostatin that is involved in insulin signaling. GIP is secreted in response to food intake and enhances insulin secretion from pancreatic β-cells. GIP also increases plasma membrane translocation of GLUT4 in a cAMP/PKA/PI3K-dependent manner. GIP binds and activates GIP receptors.