title: Reversibility of arginine-specific mono(ADP-ribosyl)ation: identification in erythrocytes of an ADP-ribose-L-arginine cleavage enzyme.
abstract: Enzymes have been identified in animal tissues that catalyze the mono(ADP-ribosyl)ation of arginine and proteins. Since these NAD:arginine ADP-ribosyltransferases under physiological conditions do not appear to catalyze the degradation of the product ADP-ribose-arginine, the possibility was investigated that a different family of enzymes exists that cleaves the ADP-ribose-arginine linkage. An enzyme was identified in and partially purified from turkey erythrocytes that catalyzed the degradation of ADP-ribose-[14C]arginine synthesized by a salt-activated NAD:arginine ADP-ribosyl-transferase, resulting in the release of a radiolabeled compound that was characterized chromatographically and by amino acid analysis as arginine. This putative arginine product was converted in a reaction dependent on NAD and the NAD:arginine ADP-ribosyltransferase to a compound exhibiting properties characteristic of ADP-ribose-arginine. Action of cleavage enzyme on [adenine-U-14C]ADP-ribose-arginine resulted in the release of a radiolabeled compound that behaved chromatographically like [adenine-U-14C]ADP-ribose. Since degradation of ADP-ribose-arginine appears to generate an arginine moiety that is a substrate for the NAD:arginine ADP-ribosyltransferase, it appears that ADP-ribosylation may be a reversible modification of proteins.
authors.forename: J
authors.initials: J
authors.lastname: Moss
authors.forename: M K
authors.initials: MK
authors.lastname: Jacobson
authors.forename: S J
authors.initials: SJ
authors.lastname: Stanley
mesh_terms: D036002:ADP Ribose Transferases; D000246:Adenosine Diphosphate Ribose / Q000378:metabolism*; D000818:Animals; D001120:Arginine / Q000378:metabolism; D004912:Erythrocytes / Q000201:enzymology*; D006026:Glycoside Hydrolases; D008190:Lyases / Q000096:biosynthesis* / Q000302:isolation & purification; D009699:N-Glycosyl Hydrolases; D009702:Nucleoside Diphosphate Sugars / Q000378:metabolism*; D009713:Nucleotidyltransferases / Q000378:metabolism; D011065:Poly(ADP-ribose) Polymerases; D011506:Proteins / Q000378:metabolism*; D014422:Turkeys
chemical_list: D009702:Nucleoside Diphosphate Sugars; D011506:Proteins; D000246:Adenosine Diphosphate Ribose; D001120:Arginine; D036002:ADP Ribose Transferases; D011065:Poly(ADP-ribose) Polymerases; D009713:Nucleotidyltransferases; D006026:Glycoside Hydrolases; D009699:N-Glycosyl Hydrolases; C046422:ADP-ribosylarginine hydrolase; D008190:Lyases