This is a receptor for GIP. The activity of this receptor is mediated by G proteins which activate adenylyl cyclase. May form homodimers and heterodimers with GLP1R. Present in the pancreas as well as the gut, adipose tissue, heart, pituitary, and inner layers of the adrenal cortex, whereas it is not found in kidney, spleen, or liver. It is also expressed in several brain regions, including the cerebral cortex, hippocampus, and olfactory bulb. N-glycosylation is required for cell surface expression and lengthens receptor half-life by preventing degradation in the ER. Belongs to the G-protein coupled receptor 2 family.