Journal article
Efficient and Error-Free Replication past a Minor-Groove N2-Guanine Adduct by the Sequential Action of Yeast Rev1 and DNA Polymerase ζ
Molecular and cellular biology, Vol.24(16), pp.6900-6906
08/2004
DOI: 10.1128/MCB.24.16.6900-6906.2004
PMCID: PMC479736
PMID: 15282292
Abstract
Rev1, a member of the Y family of DNA polymerases, functions in lesion bypass together with DNA polymerase ζ (Polζ). Rev1 is a highly specialized enzyme in that it incorporates only a C opposite template G. While Rev1 plays an indispensable structural role in Polζ-dependent lesion bypass, the role of its DNA synthetic activity in lesion bypass has remained unclear. Since interactions of DNA polymerases with the DNA minor groove contribute to the nearly equivalent efficiencies and fidelities of nucleotide incorporation opposite each of the four template bases, here we examine the possibility that unlike other DNA polymerases, Rev1 does not come into close contact with the minor groove of the incipient base pair, and that enables it to incorporate a C opposite the N2-adducted guanines in DNA. To test this idea, we examined whether Rev1 could incorporate a C opposite the γ-hydroxy-1,N2-propano-2′deoxyguanosine DNA minor-groove adduct, which is formed from the reaction of acrolein with the N2 of guanine. Acrolein, an α,β-unsaturated aldehyde, is generated in vivo as the end product of lipid peroxidation and from other oxidation reactions. We show here that Rev1 efficiently incorporates a C opposite this adduct from which Polζ subsequently extends, thereby completing the lesion bypass reaction. Based upon these observations, we suggest that an important role of the Rev1 DNA synthetic activity in lesion bypass is to incorporate a C opposite the various N2-guanine DNA minor-groove adducts that form in DNA.
Details
- Title: Subtitle
- Efficient and Error-Free Replication past a Minor-Groove N2-Guanine Adduct by the Sequential Action of Yeast Rev1 and DNA Polymerase ζ
- Creators
- M. Todd Washington - Sealy Center for Molecular Science, University of Texas Medical Branch at Galveston, Galveston, Texas 77555-1061Irina G Minko - Sealy Center for Molecular Science, University of Texas Medical Branch at Galveston, Galveston, Texas 77555-1061Robert E Johnson - Sealy Center for Molecular Science, University of Texas Medical Branch at Galveston, Galveston, Texas 77555-1061Lajos Haracska - Sealy Center for Molecular Science, University of Texas Medical Branch at Galveston, Galveston, Texas 77555-1061Thomas M Harris - Sealy Center for Molecular Science, University of Texas Medical Branch at Galveston, Galveston, Texas 77555-1061R. Stephen Lloyd - Sealy Center for Molecular Science, University of Texas Medical Branch at Galveston, Galveston, Texas 77555-1061Satya Prakash - Sealy Center for Molecular Science, University of Texas Medical Branch at Galveston, Galveston, Texas 77555-1061Louise Prakash - Sealy Center for Molecular Science, University of Texas Medical Branch at Galveston, Galveston, Texas 77555-1061
- Resource Type
- Journal article
- Publication Details
- Molecular and cellular biology, Vol.24(16), pp.6900-6906
- DOI
- 10.1128/MCB.24.16.6900-6906.2004
- PMID
- 15282292
- PMCID
- PMC479736
- NLM abbreviation
- Mol Cell Biol
- ISSN
- 0270-7306
- eISSN
- 1098-5549
- Publisher
- American Society for Microbiology
- Language
- English
- Date published
- 08/2004
- Academic Unit
- Radiation Oncology; Biochemistry and Molecular Biology
- Record Identifier
- 9984024405302771
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