Reaction catalyzed by cathepsin D (3.4.23.5)

		+		H2O	=			+
	2-aminobenzoyl-ATKFFSRQ-N-(2,4-dinitrophenyl)ethylenediamine	+		H2O	=		2-aminobenzoyl-ATKF	+		FSRQ-N-(2,4-dinitrophenyl)ethylenediamine