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Microsc Res Tech. 2000 Apr 15;49(2):152-60.

Cytokinesis in fission yeast: a myosin pas de deux.

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  • 1Department of Biology, University College London, London WC1E 6BT, United Kingdom.


Cytokinesis in the fission yeast, Schizosaccharomyces pombe consists of two distinct but overlapping events: the assembly and constriction of a cytokinetic actomyosin ring (CAR) and the formation of a cross wall or septum. These two processes must be spatially and temporally coordinated both with each other and with other cell cycle events, most notably spindle formation and anaphase chromosome segregation. In fission yeast, the CAR contains two unusual type II myosins, Myo2, encoded by the gene myo2(+), and Myp2, encoded by myp2(+). The relationship of these two proteins to each other and their relative contribution to CAR assembly and contraction is largely unknown. Here we review what is known about the role of each myosin in cytokinesis and present some new information concerning their regulation and possible physical interaction.

Copyright 2000 Wiley-Liss, Inc.

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