Reaction catalyzed by dipeptidyl-peptidase I (3.4.14.1)

		+		H2O	=			+
	beta-(2-thienyl)Ala-beta-(7-methoxycoumarin-4-yl)Ala-Ser-Tyr(3-NO2)-NH2	+		H2O	=		beta-(2-thienyl)Ala-beta-(7-methoxycoumarin-4-yl)Ala	+		Ser-Tyr(3-NO2)-NH2