Reaction catalyzed by dipeptidyl-peptidase IV (3.4.14.5)

		=			+		Lys-Pro-Gln-Gln-Phe-Phe-Gly
	Arg-Pro-Lys-Pro-Gln-Gln-Phe-Phe-Gly	=		Arg-Pro	+		Lys-Pro-Gln-Gln-Phe-Phe-Gly