title: Transcription factor Yin Yang 1 stimulates poly(ADP-ribosyl)ation and DNA repair.
abstract: Poly(ADP-ribose) polymerase 1 (PARP-1) is a nuclear enzyme that catalyzes the synthesis of ADP-ribose polymers from NAD(+). The function of PARP-1 is related to important nuclear processes including DNA repair and transcription. Previous studies demonstrated a specific physical interaction between PARP-1 and the transcription factor Yin Yang 1 (YY1) in vitro. In this study, a functional relationship between both proteins in response to genotoxic treatment of cells is presented. The interaction of YY1 with PARP-1 greatly stimulates the enzymatic activity of PARP-1. Consistent with this, the overexpression of YY1 in HeLa cells resulted in an enhanced synthesis of poly(ADP-ribose) and an acceleration of DNA repair in response to a treatment with methyl-N'-nitro-N'-nitrosoguanidine.
authors.affiliation: Institut für Biochemie, Freie Universität Berlin, Thielallee 63, Berlin, 14195, Federal Republic of Germany. Lity@chemie.fu-berlin.de
authors.forename: S L
authors.initials: SL
authors.lastname: Oei
authors.forename: Y
authors.initials: Y
authors.lastname: Shi
mesh_terms: D002453:Cell Cycle / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D004247:DNA / Q000378:metabolism*; D004249:DNA Damage; D004260:DNA Repair / Q000187:drug effects / Q000502:physiology*; D004268:DNA-Binding Proteins / Q000235:genetics / Q000378:metabolism* / Q000494:pharmacology; D050981:Erythroid-Specific DNA-Binding Factors; D015870:Gene Expression / Q000187:drug effects; D006367:HeLa Cells / Q000187:drug effects / Q000378:metabolism; D006801:Humans; D008769:Methylnitronitrosoguanidine / Q000494:pharmacology; D011064:Poly Adenosine Diphosphate Ribose / Q000378:metabolism*; D011065:Poly(ADP-ribose) Polymerases / Q000378:metabolism*; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism* / Q000494:pharmacology; D014162:Transfection; D050986:YY1 Transcription Factor
chemical_list: D004268:DNA-Binding Proteins; D050981:Erythroid-Specific DNA-Binding Factors; D014157:Transcription Factors; D050986:YY1 Transcription Factor; C494698:YY1 protein, human; D008769:Methylnitronitrosoguanidine; D011064:Poly Adenosine Diphosphate Ribose; D004247:DNA; D011065:Poly(ADP-ribose) Polymerases