Reaction catalyzed by NAD+ ADP-ribosyltransferase (2.4.2.30)

	NAD+	+		(ADP-D-ribosyl)n-Ras protein	=			+
	NAD+	+		(ADP-D-ribosyl)n-Ras protein	=		nicotinamide	+		(ADP-D-ribosyl)n+1-Ras protein