title: Poly ADP-ribosylation and DNA strand breakage in SV40 minichromosomes.
abstract: Poly ADP-ribosylation and DNA strand breakage in response to treatment with the methylating agent N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) were studied on SV40 minichromosomes in SV40-infected, permeabilized CV-1 monkey cells. After an initial sharp increase in poly ADP-ribosylation, strand breakage and poly ADPR increased proportionately with increasing dose of MNNG. This suggests a cause-effect relationship between the two reactions. The major poly ADP-ribose acceptor of minichromosomes was core histone H2B. In contrast, H2B, H2A, H1 and protein A24 were poly ADP-ribosylated in the nuclear chromatin of the same cells.
authors.forename: G G
authors.initials: GG
authors.lastname: Poirier
authors.forename: T C
authors.initials: TC
authors.lastname: Brown
authors.forename: P A
authors.initials: PA
authors.lastname: Cerutti
mesh_terms: D000818:Animals; D002522:Chlorocebus aethiops; D002875:Chromosomes / Q000378:metabolism*; D004247:DNA; D008769:Methylnitronitrosoguanidine; D009702:Nucleoside Diphosphate Sugars / Q000096:biosynthesis*; D009713:Nucleotidyltransferases / Q000032:analysis; D011064:Poly Adenosine Diphosphate Ribose / Q000096:biosynthesis*; D011065:Poly(ADP-ribose) Polymerases; D013539:Simian virus 40 / Q000235:genetics
chemical_list: D009702:Nucleoside Diphosphate Sugars; D008769:Methylnitronitrosoguanidine; D011064:Poly Adenosine Diphosphate Ribose; D004247:DNA; D011065:Poly(ADP-ribose) Polymerases; D009713:Nucleotidyltransferases