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Multiple pathways cooperate in the suppression of genome instability in Saccharomyces cerevisiae

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  • Kyungjae Myung

    (Ludwig Institute for Cancer Research, University of California San Diego School of Medicine)

  • Clark Chen

    (Ludwig Institute for Cancer Research, University of California San Diego School of Medicine)

  • Richard D. Kolodner

    (Ludwig Institute for Cancer Research, University of California San Diego School of Medicine)

Abstract

Gross chromosome rearrangements (GCRs), such as translocations, deletion of a chromosome arm, interstitial deletions and inversions, are often observed in cancer cells1,2,3. Spontaneous GCRs are rare in Saccharomyces cerevisiae; however, the existence of mutator mutants with increased genome instability suggests that GCRs are actively suppressed4,5. Here we show by genetic analysis that these genome rearrangements probably result from DNA replication errors and are suppressed by at least three interacting pathways or groups of proteins: S-phase checkpoint functions5, recombination proteins4 and proteins that prevent de novo addition of telomeres at double-strand breaks (DSBs). Mutations that inactivate these pathways cause high rates of GCRs and show synergistic interactions, indicating that the pathways that suppress GCRs all compete for the same DNA substrates.

Suggested Citation

  • Kyungjae Myung & Clark Chen & Richard D. Kolodner, 2001. "Multiple pathways cooperate in the suppression of genome instability in Saccharomyces cerevisiae," Nature, Nature, vol. 411(6841), pages 1073-1076, June.
    • Handle: RePEc:nat:nature:v:411:y:2001:i:6841:d:10.1038_35082608
    DOI: 10.1038/35082608
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    Cited by:

    1. Amr M. Al-Zain & Mattie R. Nester & Iffat Ahmed & Lorraine S. Symington, 2023. "Double-strand breaks induce inverted duplication chromosome rearrangements by a DNA polymerase δ-dependent mechanism," Nature Communications, Nature, vol. 14(1), pages 1-15, December.
    2. Zebin Hong & Alicia K. Byrd & Jun Gao & Poulomi Das & Vanessa Qianmin Tan & Emory G. Malone & Bertha Osei & John C. Marecki & Reine U. Protacio & Wayne P. Wahls & Kevin D. Raney & Haiwei Song, 2024. "Eukaryotic Pif1 helicase unwinds G-quadruplex and dsDNA using a conserved wedge," Nature Communications, Nature, vol. 15(1), pages 1-13, December.

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