Real-time imaging of DNA loop extrusion by condensin

  • Mahipal Ganji
    Department of Bionanoscience, Kavli Institute of Nanoscience Delft, Delft University of Technology, Delft, Netherlands.
  • Indra A. Shaltiel
    Cell Biology and Biophysics Unit, Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany.
  • Shveta Bisht
    Cell Biology and Biophysics Unit, Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany.
  • Eugene Kim
    Department of Bionanoscience, Kavli Institute of Nanoscience Delft, Delft University of Technology, Delft, Netherlands.
  • Ana Kalichava
    Department of Bionanoscience, Kavli Institute of Nanoscience Delft, Delft University of Technology, Delft, Netherlands.
  • Christian H. Haering
    Cell Biology and Biophysics Unit, Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany.
  • Cees Dekker
    Department of Bionanoscience, Kavli Institute of Nanoscience Delft, Delft University of Technology, Delft, Netherlands.

書誌事項

公開日
2018-04-06
DOI
  • 10.1126/science.aar7831
公開者
American Association for the Advancement of Science (AAAS)

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説明

<jats:title>Live imaging of DNA loop extrusion</jats:title> <jats:p> To spatially organize chromosomes, ring-shaped protein complexes including condensin and cohesin have been hypothesized to extrude DNA loops. Condensin has been shown to exhibit a DNA-translocating motor function, but extrusion has not been observed directly. Using single-molecule imaging, Ganji <jats:italic>et al.</jats:italic> visualized in real time a condensin-mediated, adenosine triphosphate-dependent, fast DNA loop extrusion process. Loop extrusion occurred asymmetrically, with condensin reeling in only one end of the DNA. These data provide unambiguous evidence of a loop extrusion mechanism for chromosome organization. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6384" page="102" related-article-type="in-this-issue" vol="360" xlink:href="10.1126/science.aar7831">102</jats:related-article> </jats:p>

収録刊行物

  • Science

    Science 360 (6384), 102-105, 2018-04-06

    American Association for the Advancement of Science (AAAS)

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