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Kinetochore dynein is sufficient to biorient chromosomes and remodel the outer kinetochore

Author

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  • Bram Prevo

    (University of Edinburgh
    Ludwig Institute for Cancer Research)

  • Dhanya K. Cheerambathur

    (University of Edinburgh)

  • William C. Earnshaw

    (University of Edinburgh)

  • Arshad Desai

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

Abstract

Multiple microtubule-directed activities concentrate on mitotic chromosomes to ensure their faithful segregation. These include couplers and dynamics regulators localized at the kinetochore, the microtubule interface built on centromeric chromatin, as well as motor proteins recruited to kinetochores and chromatin. Here, we describe an in vivo approach in the C. elegans one-cell embryo in which removal of the major microtubule-directed activities on mitotic chromosomes is compared to the selective presence of individual activities. Our approach reveals that the kinetochore dynein module, comprised of cytoplasmic dynein and its kinetochore-specific adapters, is sufficient to biorient chromosomes; by contrast, this module is unable to support congression. In coordination with orientation, the dynein module directs removal of outermost kinetochore components, including dynein itself, independently of the other microtubule-directed activities and kinetochore-localized protein phosphatase 1. These observations indicate that the kinetochore dynein module is sufficient to biorient chromosomes and to direct remodeling of the outer kinetochore in a microtubule attachment state-sensitive manner.

Suggested Citation

  • Bram Prevo & Dhanya K. Cheerambathur & William C. Earnshaw & Arshad Desai, 2024. "Kinetochore dynein is sufficient to biorient chromosomes and remodel the outer kinetochore," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-52964-5
    DOI: 10.1038/s41467-024-52964-5
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    References listed on IDEAS

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    1. Ekaterina L. Grishchuk & Maxim I. Molodtsov & Fazly I. Ataullakhanov & J. Richard McIntosh, 2005. "Force production by disassembling microtubules," Nature, Nature, vol. 438(7066), pages 384-388, November.
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