Cited by 157DNA Repair MechanismsCancer therapeutics and mechanismsFungal and yeast genetics research

Topoisomerase 1-Mediated Removal of Ribonucleotides from Nascent Leading-Strand DNA

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Williams, Jessica S., Smith, Dana J., Marjavaara, Lisette, Lujan, Scott A., Chabes, Andrei, Kunkel, Thomas A.·2013·Molecular Cell

Abstract

RNase H2-dependent ribonucleotide excision repair (RER) removes ribonucleotides incorporated during DNA replication. When RER is defective, ribonucleotides in the nascent leading strand of the yeast genome are associated with replication stress and genome instability. Here, we provide evidence that topoisomerase 1 (Top1) initiates an independent form of repair to remove ribonucleotides from genomic DNA. This Top1-dependent process activates the S phase checkpoint. Deleting TOP1 reverses this checkpoint activation and also relieves replication stress and genome instability in RER-defective cells. The results reveal an additional removal pathway for a very common lesion in DNA, and they imply that the "dirty" DNA ends created when Top1 incises ribonucleotides in DNA are responsible for the adverse consequences of ribonucleotides in RNase H2-defective cells.

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Crossref · 10.1016/j.molcel.2012.12.021

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  • The consequences caused by RNase H2 deficiency in yeast were alleviated by concomitant deletion of Top1.

    “In fact, the consequences caused by RNase H2 deficiency in yeast were alleviated by concomitant deletion of Top1 (Williams et al. 2013).”

    From Ribonucleotide errors, RNase HII, and ribonucleotide excision repair (2026) · cites this paper as Williams et al. 2013

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  1. Williams RS Williams JS Tainer JA Mre11-Rad50-Nbs1 is a keystone complex connecting DNA repair machinery, double-strand break signaling, and the chromatin template Biochem Cell Biol 2007 85 509 520 17713585

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Authors
Williams, J. S., Smith, D. J., Marjavaara, L., Lujan, S. A., Chabes, A., & Kunkel, T. A.
Affiliations
  • National Institutes of Health (US)
  • Umeå University (SE)
Corresponding author
Kunkel, Thomas A.
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2013-03
Volume
49
Issue
5
Pages
1010-1015
ISSN
1097-2765 (ISSN-L)
OpenAlex
W1997865561
Cited by
157
References
36
Citations by year
2026: 6 · 2025: 6 · 2024: 12 · 2023: 9 · 2022: 11 · 2021: 10 · 2020: 7 · 2019: 16 · 2018: 4 · 2017: 18 · 2016: 14 · 2015: 21 · 2014: 18 · 2013: 5
FWCI
8.67
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute of Environmental Health Sciences (Z01ES065070)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cancer therapeutics and mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
topoisomerase I, ribonucleotide excision repair, RNase H2, ribonucleotides, replication stress, genomic instability, S-phase checkpoint, DNA repair pathways, Saccharomyces cerevisiae
MeSH terms
DNA Repair, DNA Topoisomerases, Type I, DNA, Fungal, Ribonucleotides, Saccharomyces cerevisiae, Ribonuclease H, Genomic Instability

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