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PMID: 4605075 Published · ppublish English Journal Article

Role of ATP in excision repair of ultraviolet radiation damage in Escherichia coli.

Waldstein EA, Sharon R, Ben-Ishai R

Abstract

The effect of ATP on the first step of excision repair of ultraviolet damage in DNA has been studied using toluene-treated E. coli. During postirradiation incubation, five to six times more single-strand breaks are formed in DNA in the presence of exogenous ATP than in its absence. The ATP-dependent as well as the ATP-independent endonucleolytic activities appear to be catalyzed by the same enzyme since both activities are almost completely absent in uvrA and uvrB mutants. An ATP-dependent endonucleolytic activity has been detected in nonirradiated toluene-treated E. coli. It is concluded that ATP is required in vivo for either the incision step of repair or an enzymatic reaction preceding it.

MeSH Terms
Adenosine Triphosphate/physiology Centrifugation, Density Gradient DNA Repair/drug effects DNA, Bacterial/radiation effects DNA, Single-Stranded/radiation effects Endonucleases/metabolism Escherichia coli/drug effects,enzymology,metabolism Molecular Weight Mutation Radiation Dosage Radiation Effects Toluene/pharmacology Ultraviolet Rays
Chemicals
DNA, Bacterial DNA, Single-Stranded Toluene Adenosine Triphosphate Endonucleases
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Waldstein E A
Sharon R
Ben-Ishai R
References (22)
22 references, click to expand
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Article Info
Journal
Proceedings of the National Academy of Sciences of the United States of America
Abbr.
Proc Natl Acad Sci U S A
ISSN
0027-8424
Published
1974-07-00
Pages
2651-4
Language
English
Region
United States
NLM ID
7505876
PMCID
PMC388524
Subset
IM
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