Reaction catalyzed by NAD+ ADP-ribosyltransferase (2.4.2.30)

	NAD+	+		(ADP-D-ribosyl)n-(EF-2)	=			+
	NAD+	+		(ADP-D-ribosyl)n-(EF-2)	=		nicotinamide	+		(ADP-D-ribosyl)n+1-(EF-2)