IUBMB Enzyme Nomenclature


Accepted name: NAD+ ADP-ribosyltransferase

Reaction: NAD+ + (ADP-D-ribosyl)n-acceptor = nicotinamide + (ADP-D-ribosyl)n+1-acceptor + H+

For diagram click here.

Other name(s): poly(ADP-ribose) synthase; ADP-ribosyltransferase (polymerizing); NAD ADP-ribosyltransferase; PARP; PARP-1; NAD+:poly(adenine-diphosphate-D-ribosyl)-acceptor ADP-D-ribosyl-transferase (incorrect); NAD+:poly(adenosine-diphosphate-D-ribosyl)-acceptor ADP-D-ribosyl-transferase

Systematic name: NAD+:poly(ADP-D-ribosyl)-acceptor ADP-D-ribosyl-transferase

Comments: The ADP-D-ribosyl group of NAD+ is transferred to an acceptor carboxy group on a histone or the enzyme itself, and further ADP-ribosyl groups are transferred to the 2'-position of the terminal adenosine moiety, building up a polymer with an average chain length of 20-30 units.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number: 58319-92-9


1. Ueda, K. and Hayaishi, O. ADP-ribosylation. Annu. Rev. Biochem. 54 (1985) 73-100. [PMID: 3927821]

2. Ueda, K., Kawaichi, M. and Hayaishi, O. Poly(ADP-ribose) synthetase. In: Hayaishi, O. and Ueda, K. (Eds.), ADP-Ribosylation Reactions: Biology and Medicine, Academic Press, London, 1982, p. 117-155.

3. Ushiro, H., Yokoyama, Y. and Shizuta, Y. Purification and characterization of poly (ADP-ribose) synthetase from human placenta. J. Biol. Chem. 262 (1987) 2352-2357. [PMID: 2434482]

[EC created 1984, modified 1990]

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