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    TINA interacts with the NIMA kinase in Aspergillus nidulans and negatively regulates astral microtubules during metaphase arrest

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    Oakley_MBC_14(8)3169.pdf (482.7Kb)
    Issue Date
    2003-08-01
    Author
    Osmani, Aysha H.
    Davies, Jonathan
    Oakley, C. Elizabeth
    Oakley, Berl R.
    Osmani, Stephen A.
    Publisher
    American Society for Cell Biology
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    The tinA gene of Aspergillus nidulans encodes a protein that interacts with the NIMA mitotic protein kinase in a cell cycle-specific manner. Highly similar proteins are encoded in Neurospora crassa and Aspergillus fumigatus. TINA and NIMA preferentially interact in interphase and larger forms of TINA are generated during mitosis. Localization studies indicate that TINA is specifically localized to the spindle pole bodies only during mitosis in a microtubule-dependent manner. Deletion of tinA alone is not lethal but displays synthetic lethality in combination with the anaphase-promoting complex/cyclosome mutation bimE7. At the bimE7 metaphase arrest point, lack of TINA enhanced the nucleation of bundles of cytoplasmic microtubules from the spindle pole bodies. These microtubules interacted to form spindles joined in series via astral microtubules as revealed by live cell imaging. Because TINA is modified and localizes to the spindle pole bodies at mitosis, and lack of TINA causes enhanced production of cytoplasmic microtubules at metaphase arrest, we suggest TINA is involved in negative regulation of the astral microtubule organizing capacity of the spindle pole bodies during metaphase.
    Description
    This is the publisher's version, also available electronically from "www.molbiolcell.org".
    URI
    http://hdl.handle.net/1808/17509
    DOI
    https://doi.org/10.1091/mbc.E02-11-0715
    Collections
    • Molecular Biosciences Scholarly Works [458]
    Citation
    Osmani, A.H., Davies, J., Oakley, C., Oakley, B. & Osmani, S.A. (2003). TINA interacts with the NIMA kinase in Aspergillus nidulans and negatively regulates astral microtubules during metaphase arrest. Molecular Biology of the Cell, 14(8), 3169-3179. http://www.dx.doi.org/10.1091/mbc.E02-11-0715

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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