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Journal Article

Morphologically distinct microtubule ends in the mitotic centrosome of Caenorhabditis elegans.

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Hyman,  Anthony A
Max Planck Institute of Molecular Cell Biology and Genetics, Max Planck Society;

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Muller-Reichert,  Thomas
Max Planck Institute of Molecular Cell Biology and Genetics, Max Planck Society;

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Citation

O'Toole, E. T., McDonald, K. L., Mantler, J., McIntosh, J. R., Hyman, A. A., & Muller-Reichert, T. (2003). Morphologically distinct microtubule ends in the mitotic centrosome of Caenorhabditis elegans. Journal of Cell Biology, 163(3), 451-456.


Cite as: https://hdl.handle.net/21.11116/0000-0001-12E0-D
Abstract
During mitosis, the connections of microtubules (MTs) to centrosomes and kinetochores are dynamic. From in vitro studies, it is known that the dynamic behavior of MTs is related to the structure of their ends, but we know little about the structure of MT ends in spindles. Here, we use high-voltage electron tomography to study the centrosome- and kinetochore-associated ends of spindle MTs in embryonic cells of the nematode, Caenorhabditis elegans. Centrosome-associated MT ends are either closed or open. Closed MT ends are more numerous and are uniformly distributed around the centrosome, but open ends are found preferentially on kinetochore-attached MTs. These results have structural implications for models of MT interactions with centrosomes.