title: Poly ADP-ribosylation of histones in tumor promoter phorbol-12-myristate-13-acetate treated mouse embryo fibroblasts C3H10T1/2.
abstract: The tumor promoter phorbol-12-myristate-13-acetate (PMA) increases the poly ADP-ribosylation of acid extractable (0.2N H2SO4) nuclear proteins in mouse embryo fibroblasts C3H10T1/2. Catalase suppresses the reaction by approximately 50%. Polyacrylamide gel electrophoresis reveals that the core histones H2B, A24 and H3d serve as major poly ADP-ribose acceptors. Smaller amounts of poly ADP-ribose are associated with histones H2A/H3 and H1. Poly ADP-ribosylation of histones may change the nucleosomal structure and function and play a role in PMA induced modulation of gene expression in promotion.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000032:analysis; D002478:Cells, Cultured; D002868:Chromosomal Proteins, Non-Histone / Q000378:metabolism; D004622:Embryo, Mammalian; D005347:Fibroblasts / Q000187:drug effects / Q000378:metabolism*; D006657:Histones / Q000378:metabolism*; D051379:Mice; D008809:Mice, Inbred C3H; D009702:Nucleoside Diphosphate Sugars / Q000378:metabolism*; D010704:Phorbols / Q000494:pharmacology*; D011064:Poly Adenosine Diphosphate Ribose / Q000378:metabolism*; D011499:Protein Processing, Post-Translational; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology*
chemical_list: D002868:Chromosomal Proteins, Non-Histone; D006657:Histones; D009702:Nucleoside Diphosphate Sugars; D010704:Phorbols; D011064:Poly Adenosine Diphosphate Ribose; D013755:Tetradecanoylphorbol Acetate