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Nature 432, 563-564 (2 December 2004) | doi:10.1038/432563a; Published online 1 December 2004

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Cytoskeleton:  Spindle saga

Eric Karsenti1

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It's generally been thought that, during cell division, only proteins are necessary to assemble the machine that segregates chromosomes. But a new molecular requirement has been discovered.

Arguably the most striking structure a cell can produce is the spindle — a fine meshwork of filaments that carries out a fundamental task in cell division. Before one cell can make two, it must duplicate its DNA; the replicated chromosomes must then be separated and pulled to opposite poles of the cell, which splits into two.

  1. Eric Karsenti is at the European Molecular Biology Laboratory, Cell Biology and Biophysics Programme, Meyerhofstrasse 1, Heidelberg 69117, Germany.
    Email: karsenti@embl-heidelberg.de