Dynamic changes in CCAN organization through CENP-C during cell-cycle progression

Harsh Nagpal, Tetsuya Hori, Ayako Furukawa, Kenji Sugase, Akihisa Osakabe, Hitoshi Kurumizaka, Tatsuo Fukagawa

    Research output: Contribution to journalArticle

    26 Citations (Scopus)

    Abstract

    The kinetochore is a crucial structure for faithful chromosome segregation during mitosis and is formed in the centromeric region of each chromosome. The 16-subunit protein complex known as the constitutive centromere-associated network (CCAN) forms the foundation for kinetochore assembly on the centromeric chromatin. Although the CCAN can be divided into several subcomplexes, it remains unclear how CCAN proteins are organized to form the functional kinetochore. In particular, this organization may vary as the cell cycle progresses. To address this, we analyzed the relationship of centromeric protein (CENP)-C with the CENP-H complex during progression of the cell cycle. We find that the middle portion of chicken CENP-C (CENP-C166-324) is sufficient for centromere localization during interphase, potentially through association with the CENP-L-N complex. The C-terminus of CENPC (CENP-C601-864) is essential for centromere localization during mitosis, through binding to CENP-A nucleosomes, independent of the CENP-H complex. On the basis of these results, we propose that CCAN organization changes dynamically during progression of the cell cycle.

    Original languageEnglish
    Pages (from-to)3768-3776
    Number of pages9
    JournalMolecular Biology of the Cell
    Volume26
    Issue number21
    DOIs
    Publication statusPublished - 2015 Nov 1

    ASJC Scopus subject areas

    • Molecular Biology
    • Cell Biology

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  • Cite this

    Nagpal, H., Hori, T., Furukawa, A., Sugase, K., Osakabe, A., Kurumizaka, H., & Fukagawa, T. (2015). Dynamic changes in CCAN organization through CENP-C during cell-cycle progression. Molecular Biology of the Cell, 26(21), 3768-3776. https://doi.org/10.1091/mbc.E15-07-0531