The 3Ms of central spindle assembly: microtubules, motors and MAPs.

The 3Ms of central spindle assembly: microtubules, motors and MAPs.
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DOI:
10.1038/nrm2609
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发表时间:
2009-01
期刊:
Nature reviews. Molecular cell biology
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其他
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在中期,姐妹染色单体位于基于微管的有丝分裂纺锤体的中点,为它们的分离做准备。后期的开始会触发关键的有丝分裂激酶、细胞周期蛋白依赖性激酶 1 (CDK1) 的失活以及姐妹染色单体的向极运动。在后期,有丝分裂纺锤体重组,为胞质分裂做准备。驱动蛋白运动蛋白和微管相关蛋白(MAP)将极间微管的正端捆绑在一起并产生中央纺锤体,其调节卵裂沟的启动和胞质分裂的完成。细胞生物学、遗传学和计算模型等补充方法为中心纺锤体组装的机制和调节提供了新的见解。
During metaphase, sister chromatids are positioned at the midpoint of the microtubule-based mitotic spindle in preparation for their segregation. The onset of anaphase triggers inactivation of the key mitotic kinase, cyclin dependent kinase 1 (CDK1), and the polewards movement of sister chromatids. During anaphase, the mitotic spindle reorganizes in preparation for cytokinesis. Kinesin motor proteins and microtubule associated proteins (MAPs) bundle the plus ends of interpolar microtubules and generate the central spindle, which regulates cleavage furrow initiation and completion of cytokinesis. Complementary approaches including cell biology, genetics, and computational modelling have provided new insights into the mechanism and regulation of central spindle assembly.
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