Immunogen sequence: LVQWKKELRD AYREAQQLVQ RVPKMKNKPR SPVVELSKVP LVQRGSANGL Antigen sequence identity: Mouse 98%; Rat 98%. ADRBK1 (GRK2) is a serine/threonine kinase. Many of the G protein-coupled receptors are known to be phosphorylated by G protein-depe