The Ndc80 complex: integrating the kinetochore's many movements.

The Ndc80 complex: integrating the kinetochore's many movements.
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DOI:
10.1007/s10577-010-9180-5
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发表时间:
2011-04
影响因子:
2.6
通讯作者:
Stukenberg, P. Todd
Stukenberg, P. Todd
中科院分区:
生物学2区
文献类型:
--
作者:
Tooley, John;Stukenberg, P. Todd

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Ndc 80复合体位于动粒的中心,动粒是一种大型蛋白质机器,在细胞分裂期间精确分离染色体。Ndc 80复合物在组装动粒中具有结构作用,但也对大会染色体和向纺锤体检查点发出信号起作用。它直接与微管结合,目前是长期寻找的将微管解聚与染色体运动结合的蛋白质的最佳候选者。最近,结构和遗传数据的结合为这种迷人的运动活动产生了第一个模型。此外,最近的数据表明,Ndc 80在动粒中的作用越来越活跃-不仅涉及与微管的简单结合,而且还涉及复杂形状及其在整个动粒结构中的位置的变化。在这篇综述中,我们讨论了最近的进展,我们的理解Ndc 80复杂和解决未来的研究领域。
The Ndc80 complex lies at the heart of the kinetochore, a large protein machine that accurately segregates chromosomes during cell division. The Ndc80 complex has structural roles in assembling the kinetochore, but also functions to congress chromosomes and to signal the spindle checkpoint. It directly binds to microtubules and is currently the best candidate for the long-sought protein that couples microtubule depolymerization to chromosome movement. A combination of structural and genetic data have recently converged to generate the first models for this fascinating motor activity. Additionally, recent data point to an increasingly dynamic role for Ndc80 in the kinetochore – one which involves not only simple binding to microtubules but also shifts in complex shape and its location within the overall kinetochore structure. In this review we discuss recent advances in our understanding of the Ndc80 complex and address future areas of research.
动力学 - 微管附着依赖于Hec1的无序N末端尾部结构域。
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