Reaction catalyzed by tripeptidyl-peptidase I (3.4.14.9), tripeptidyl-peptidase II (3.4.14.10)

		+		H2O	=			+
	Phe-Pro-Ala 2-naphthylamide	+		H2O	=		Phe-Pro-Ala	+		2-naphthylamine