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Curr Opin Cell Biol. 1996 Dec;8(6):773-80.

The spindle assembly checkpoint.

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Department of Physiology, Box 0444, University of California at San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143-0444, USA.


The spindle assembly checkpoint monitors proper chromosome attachment to spindle microtubules and is conserved from yeast to humans. Checkpoint components reside on kinetochores of chromosomes and show changes in phosphorylation and localization as cells proceed through mitosis. Adaptation to prolonged checkpoint arrest can occur by inhibitory phosphorylation of Cdc2.

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