Reaction catalyzed by NAD+-protein-arginine ADP-ribosyltransferase (2.4.2.31)

	soybean trypsin inhibitor	+		NAD+	=			+
	soybean trypsin inhibitor	+		NAD+	=		Nomega-(ADP-D-ribosyl)-L-arginine-soybean trypsin inhibitor	+		nicotinamide