Reaction catalyzed by beta-peptidyl aminopeptidase (3.4.11.25), beta-Ala-His dipeptidase (3.4.13.20)

		+		H2O	=			+
	beta-Ala-Ile-beta-homoTyr	+		H2O	=		beta-Ala	+		Ile-beta-homoTyr