Poly(ADP-ribose) synthase is the major endogenous nonhistone acceptor for poly(ADP-ribose) in alkylated rat hepatoma cells
- 1 December 1987
- journal article
- research article
- Published by Wiley in European Journal of Biochemistry
- Vol. 169 (2), 365-372
- https://doi.org/10.1111/j.1432-1033.1987.tb13621.x
Abstract
The endogenous poly(ADP‐ribosyl)‐nonhistone protein conjugates were isolated from dimethyl‐sulfate‐treated rat hepatoma AH 7974 cells using aminophenylboronic‐acid‐agarose chromatography. Seven major components could be discerned on dodecyl sulfate gels (molecular mass 43, 60, 66, 86, 100, 110 and 170 kDa) while control cells indicated only slight staining at above 200 kDa. The most abundant conjugate formed in response to alkylation damage was further purified using preparative gel electrophoresis and identified on the basis of its intrinsic enzymic activity as automodified poly(APD‐ribose) synthase. In addition, topoisomerase I activity was found associated with a 60‐kDa peptide. ADP‐ribosylated endonucleases and actin were not detectable. The purified conjugate fraction contained maximally 8.8 nmol/mg ADP‐ribose and 7.9 nmol/mg oligo(ADP‐ribose) with a mean chain length of 2.3 residues. The modifying (ADP‐ribosyl)n groups were attached to its acceptors by a hydroxylamine‐insensitive bond and had practically no effect on the DNA affinity of either poly(ADP‐ribose) synthase or topoisomerase I.This publication has 65 references indexed in Scilit:
- Covalent modification of proteins by ADP-ribosylationTrends in Biochemical Sciences, 1986
- ADP-Ribosylation as a Cellular Control MechanismProceedings in Life Sciences, 1985
- ADP-RibosylationAnnual Review of Biochemistry, 1985
- DNA strand breaks and ADP-ribosyl transferase activation during cell differentiationNature, 1982
- Effects of altered [ADP-ribose]n metabolism on expression of fetal functions by adult hepatocytesNature, 1982
- Poly(adenosine diphosphate ribose)Progress in Nucleic Acid Research and Molecular Biology, 1982
- Poly(ADP-ribose) synthesis, a marker of granulocyte differentiation.Proceedings of the National Academy of Sciences, 1980
- Association of Poly(Adenosine Diphosphoribose) Synthesis with DNA Damage and Repair in Normal Human LymphocytesJCI Insight, 1979
- Structure of poly(adenosine diphosphate ribose): identification of 2'-[1''-ribosyl-2''-(or 3''-)(1'''-ribosyl)]adenosine-5',5'',5'''-tris(phosphate) as a branch linkage.Proceedings of the National Academy of Sciences, 1979
- Interrelationship between poly (ADP-Rib) synthesis, intracellular NAD levels, and muscle or cartilage differentiation from mesodermal cells of embryonic chick limb.Proceedings of the National Academy of Sciences, 1975