Reaction catalyzed by dipeptidyl-peptidase III (3.4.14.4), cathepsin B-like protease (3.4.22.B6)

		+		H2O	=			+
	Arg-Arg-7-amido-4-methylcoumarin	+		H2O	=		Arg-Arg	+		7-amino-4-methylcoumarin