Predicted to enable G protein-coupled peptide receptor activity; gastric inhibitory peptide receptor activity; and glucagon family peptide binding activity. Acts upstream of or within endocrine pancreas development. Predicted to be located in membrane. Predicted to be integral component of membrane. Predicted to be active in plasma membrane. Is expressed in foregut-midgut junction; pancreas; and pancreas primordium. Human ortholog(s) of this gene implicated in cardiovascular system disease; diabetes mellitus; obesity; and type 2 diabetes mellitus. Orthologous to human GIPR (gastric inhibitory polypeptide receptor). [provided by Alliance of Genome Resources, Apr 2022]