Reaction catalyzed by protein-arginine deiminase (3.5.3.15)

		+		H2O	=			+		NH3
	benzyloxycarbonyl-Phe-Arg-4-methylcoumarin-7-amide	+		H2O	=		benzyloxycarbonyl-Phe-citrulline-4-methylcoumarin-7-amide	+		NH3