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

Nature volume 411, pages 1073–1076 (2001)Cite this article

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.

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Figure 1: Pathways for suppression of genome instability.

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Acknowledgements

We would like to thank V. Zakian, S. Lee, J. Haber, V. Lundblad, L. Symington and M. Charbonneau for plasmids and helpful discussions; P. Lau and K. Schmidt for comments on the manuscript; and J. Weger and J. Green for DNA sequencing. This work was supported by a NIH grant to R.D.K. and a Damon Runyon-Walter Winchell Foundation Postdoctoral Fellowship to K.M.

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  1. Cancer Center and Department of Medicine, Ludwig Institute for Cancer Research, University of California San Diego School of Medicine, La Jolla, 92093, California, USA

    Kyungjae Myung, Clark Chen & Richard D. Kolodner

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  1. Kyungjae Myung
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  2. Clark Chen
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  3. Richard D. Kolodner
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Correspondence to Richard D. Kolodner.

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Myung, K., Chen, C. & Kolodner, R. Multiple pathways cooperate in the suppression of genome instability in Saccharomyces cerevisiae. Nature 411, 1073–1076 (2001). https://doi.org/10.1038/35082608

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