1. Cell Biology
  2. Chromosomes and Gene Expression
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E3 ubiquitin ligase Bre1 couples sister chromatid cohesion establishment to DNA replication in Saccharomyces cerevisiae

  1. Wei Zhang
  2. Clarence Hue Lok Yeung
  3. Liwen Wu
  4. Karen Wing Yee Yuen  Is a corresponding author
  1. The University of Hong Kong, Hong Kong
Research Article
  • Cited 3
  • Views 1,522
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Cite this article as: eLife 2017;6:e28231 doi: 10.7554/eLife.28231

Abstract

Bre1, a conserved E3 ubiquitin ligase in Saccharomyces cerevisiae, together with its interacting partner Lge1, are responsible for histone H2B monoubiquitination, which regulates transcription, DNA replication, DNA damage response and repair, ensuring the structural integrity of the genome. Deletion of BRE1 or LGE1 also results in whole chromosome instability. We discovered a novel role for Bre1, Lge1 and H2Bub1 in chromosome segregation and sister chromatid cohesion. Bre1's function in G1 and S phases contributes to cohesion establishment, but it is not required for cohesion maintenance in G2 phase. Bre1 is dispensable for the loading of cohesin complex to chromatin in G1, but regulates the localization of replication factor Mcm10 and cohesion establishment factors Ctf4, Ctf18 and Eco1 to early replication origins in G1 and S phase, and promotes cohesin subunit Smc3 acetylation for cohesion stabilization. H2Bub1 epigenetically marks the origins, potentially signaling the coupling of DNA replication and cohesion establishment.

Article and author information

Author details

  1. Wei Zhang

    School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong
    Competing interests
    The authors declare that no competing interests exist.
  2. Clarence Hue Lok Yeung

    School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong
    Competing interests
    The authors declare that no competing interests exist.
  3. Liwen Wu

    School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong
    Competing interests
    The authors declare that no competing interests exist.
  4. Karen Wing Yee Yuen

    School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong
    For correspondence
    kwyyuen@hku.hk
    Competing interests
    The authors declare that no competing interests exist.
    ORCID icon "This ORCID iD identifies the author of this article:" 0000-0002-2139-5465

Funding

Hong Kong Research Grant Council (General Research Fund 17126714)

  • Karen Wing Yee Yuen

The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.

Reviewing Editor

  1. Ali Shilatifard, Northwestern University, United States

Publication history

  1. Received: May 1, 2017
  2. Accepted: October 22, 2017
  3. Accepted Manuscript published: October 23, 2017 (version 1)
  4. Version of Record published: November 22, 2017 (version 2)

Copyright

© 2017, Zhang et al.

This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.

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