H-Pro-Leu-Ser-Arg-Thr-Leu-Ser-Val-Ala-Ala-Lys-Lys-OH

[Ala9,10, Lys11,12] Glycogen Synthase (1-12) is a selective substrate for phosphorylation by protein kinase C (PKC) . [Ala9,10, Lys11,12] Glycogen Synthase (1-12) can be used to determine the activity of protein kinase C.