Reaction catalyzed by tripeptide aminopeptidase (3.4.11.4), tripeptidyl-peptidase II (3.4.14.10), sedolisin (3.4.21.100)

		+		H2O	=			+
	Ala-Ala-Phe-p-nitroanilide	+		H2O	=		Ala-Ala-Phe	+		p-nitroaniline