Cited by 170DNA Repair MechanismsBacterial Genetics and BiotechnologyDNA and Nucleic Acid Chemistry

Gaps and forks in DNA replication: rediscovering old models

Open access
Lehmann, Alan R., Fuchs, Robert P.·2006·DNA Repair

Abstract

Most current models for replication past damaged lesions envisage that translesion synthesis occurs at the replication fork. However older models suggested that gaps were left opposite lesions to allow the replication fork to proceed, and these gaps were subsequently sealed behind the replication fork. Two recent articles lend support to the idea that bypass of the damage occurs behind the fork. In the first paper, electron micrographs of DNA replicated in UV-irradiated yeast cells show regions of single-stranded DNA both at the replication forks and behind the fork, the latter being consistent with the presence of gaps in the daughter-strands opposite lesions. The second paper describes an in vitro DNA replication system reconstituted from purified bacterial proteins. Repriming of synthesis downstream from a blocked fork occurred not only on the lagging strand as expected, but also on the leading strand, demonstrating that contrary to widely accepted beliefs, leading strand synthesis does not need to be continuous.

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Crossref · 10.1016/j.dnarep.2006.07.002

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Authors
Lehmann, A. R., & Fuchs, R. P.
Affiliations
  • University of Sussex (GB)
  • Centre National de la Recherche Scientifique (FR)
Corresponding author
Lehmann, Alan R.
Venue
DNA Repair
Publisher
Elsevier BV
Published
2006-12
Volume
5
Issue
12
Pages
1495-1498
ISSN
  • 1568-7856 (ISSN-L)
  • 1568-7864
OpenAlex
W2169534711
Cited by
170
References
17
Citations by year
2026: 3 · 2025: 3 · 2024: 1 · 2023: 5 · 2022: 1 · 2021: 10 · 2020: 4 · 2019: 4 · 2018: 7 · 2017: 12 · 2016: 11 · 2015: 16 · 2014: 9 · 2013: 12 · 2012: 8
FWCI
5.16
Type
journal article
Language
en
Open access
Locations
  • DNA repair (publishedVersion)
  • PubMed (publishedVersion)
  • Sussex Research Online (University of Sussex) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA and Nucleic Acid Chemistry
Keywords
DNA replication, translesion synthesis, replication fork, DNA damage bypass, UV-induced DNA damage, single-stranded DNA, leading strand synthesis, lagging strand
MeSH terms
DNA Repair, DNA Replication, Escherichia coli, Models, Biological, Saccharomyces cerevisiae, Saccharomyces cerevisiae Proteins, Escherichia coli Proteins

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