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    Aurora-A mediated histone H3 phosphorylation of threonine 118 controls condensin I and cohesin occupancy in mitosis

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    16
    Author
    Wike, CL; Graves, HK; Hawkins, R; Gibson, MD; Ferdinand, MB; Zhang, T; Chen, Z; Hudson, DF; Ottesen, JJ; Pokier, MG; ...
    Date
    2016-02-16
    Source Title
    eLife
    Publisher
    ELIFE SCIENCES PUBLICATIONS LTD
    University of Melbourne Author/s
    Hudson, Damien
    Affiliation
    Paediatrics (RCH)
    Metadata
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    Document Type
    Journal Article
    Citations
    Wike, C. L., Graves, H. K., Hawkins, R., Gibson, M. D., Ferdinand, M. B., Zhang, T., Chen, Z., Hudson, D. F., Ottesen, J. J., Pokier, M. G., Schumacher, J. & Tyler, J. K. (2016). Aurora-A mediated histone H3 phosphorylation of threonine 118 controls condensin I and cohesin occupancy in mitosis. ELIFE, 5 (FEBRUARY2016), https://doi.org/10.7554/eLife.11402.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/258983
    DOI
    10.7554/eLife.11402
    Abstract
    Phosphorylation of histone H3 threonine 118 (H3 T118ph) weakens histone DNA-contacts, disrupting the nucleosome structure. We show that Aurora-A mediated H3 T118ph occurs at pericentromeres and chromosome arms during prophase and is lost upon chromosome alignment. Expression of H3 T118E or H3 T118I (a SIN mutation that bypasses the need for the ATP-dependent nucleosome remodeler SWI/SNF) leads to mitotic problems including defects in spindle attachment, delayed cytokinesis, reduced chromatin packaging, cohesion loss, cohesin and condensin I loss in human cells. In agreement, overexpression of Aurora-A leads to increased H3 T118ph levels, causing cohesion loss, and reduced levels of cohesin and condensin I on chromatin. Normal levels of H3 T118ph are important because it is required for development in fruit flies. We propose that H3 T118ph alters the chromatin structure during specific phases of mitosis to promote timely condensin I and cohesin disassociation, which is essential for effective chromosome segregation.

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