Document Detail

Activation of poly(adenosine diphosphate ribose) polymerase by SV 40 minichromosomes: effects of deoxyribonucleic acid damage and histone H1.
MedLine Citation:
PMID:  6291594     Owner:  NLM     Status:  MEDLINE    
Poly(ADP-ribose) polymerase is a chromosomal enzyme that is completely dependent on added DNA for activity. The ability of DNA molecules to activate the polymerase appears to be enhanced by the presence of DNA damage. In the present study, we used SV 40 DNA and SV 40 minichromosomes to determine whether different types of DNA damage and different chromosomal components affect stimulation of polymerase activity. Treatment of SV 40 minichromosomes with agents or conditions that induced single-strand breaks increased their ability to stimulate poly(ADP-ribose) synthesis. This stimulation was enhanced by addition of histone H1 at a ratio of 1 microgram of histone H1 to 1 microgram of DNA. Higher ratios of histone H1 to DNA suppressed the ability of SV 40 minichromosomes containing single-strand breaks to stimulate enzyme activity. Treatment of SV 40 minichromosomes or SV 40 DNA with HaeIII restriction endonuclease to produce double-strand breaks markedly stimulated poly(ADP-ribose) polymerase activity. The stimulation of poly(ADP-ribose) polymerase by double-strand breaks occurred in the absence of histone H1 and was further enhanced by adding histone H1 up to ratios of 2 to 1 relative to DNA. At higher ratios of histone H1 to DNA, the presence of the histone continued to enhance the poly(ADP-ribose) synthesis stimulated by double-strand breaks.
J J Cohen; D M Catino; S J Petzold; N A Berger
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Biochemistry     Volume:  21     ISSN:  0006-2960     ISO Abbreviation:  Biochemistry     Publication Date:  1982 Sep 
Date Detail:
Created Date:  1983-01-07     Completed Date:  1983-01-07     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0370623     Medline TA:  Biochemistry     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  4931-40     Citation Subset:  IM    
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MeSH Terms
Chromosomes / metabolism*
DNA / pharmacology
DNA Restriction Enzymes
DNA, Viral / pharmacology*
Enzyme Activation / drug effects
Histones / pharmacology*
NAD+ Nucleosidase / metabolism*
Poly(ADP-ribose) Polymerases / biosynthesis,  metabolism*
Simian virus 40* / genetics
Virus Cultivation
Grant Support
Reg. No./Substance:
0/DNA, Viral; 0/Histones; 9007-49-2/DNA; EC Polymerases; EC 3.1.21.-/DNA Restriction Enzymes; EC Nucleosidase

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