Saunders WS and Hoyt MA (1992) Kinesin-related proteins required for structural integrity of the mitotic spindle. Cell 70(3):451-8
Abstract: For S. cerevisiae cells, the assembly of a bipolar mitotic spindle requires the action of either Cin8p or Kip1p, gene products related to the mechanochemical enzyme kinesin. In this paper we demonstrate that the activity of either one of these proteins is also required following spindle assembly. When their function was eliminated, preanaphase bipolar spindles rapidly collapsed, with previously separated poles being drawn together. In contrast, anaphase spindles were apparently resistant to collapse. Deletion of kinesin-related KAR3 partially suppressed the phenotypes associated with loss of Cin8p/Kip1p function. Our findings suggest that the structure of the preanaphase bipolar spindle is maintained by counteracting forces produced by kinesin-related proteins.
|Status: Published||Type: Journal Article||PubMed ID: 1643659|
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