Kinetochore dynein: its dynamics and role in the transport of the Rough deal checkpoint protein.

Kinetochore dynein: its dynamics and role in the transport of the Rough deal checkpoint protein.
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动粒动力蛋白:其动力学和在粗糙检查点蛋白运输中的作用。

DOI:
10.1038/ncb1101-1001
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发表时间:
2001
影响因子:
21.3
通讯作者:
Hays,T
Hays,T
中科院分区:
生物学1区
文献类型:
--
作者:
Wojcik,E;Basto,R;Serr,M;Scaërou,F;Karess,R;Hays,T

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我们描述了活的果蝇胚胎中动粒动力蛋白-动力蛋白的动态变化,并检测了突变的动力蛋白对中期检查点的影响。动态素与绿色荧光蛋白的功能结合在动粒前期迅速积累,随后在动粒晚期和中期从动粒向极迁移。这种行为在几种中期检查点蛋白中都可以看到,包括Rough Deal(Rod)。在神经母细胞中,低形态的动力蛋白突变体在中期积累,并阻止杆从动点到微管的正常重新分布。通过将检查点蛋白从正确连接的动点中心转移出去,动力蛋白可能有助于关闭中期检查点,允许后期继续进行。
We describe the dynamics of kinetochore dynein–dynactin in livingDrosophilaembryos and examine the effect of mutant dynein on the metaphase checkpoint. A functional conjugate of dynamitin with green fluorescent protein accumulates rapidly at prometaphase kinetochores, and subsequently migrates off kinetochores towards the poles during late prometaphase and metaphase. This behaviour is seen for several metaphase checkpoint proteins, including Rough deal (Rod). In neuroblasts, hypomorphic dynein mutants accumulate in metaphase and block the normal redistribution of Rod from kinetochores to microtubules. By transporting checkpoint proteins away from correctly attached kinetochores, dynein might contribute to shutting off the metaphase checkpoint, allowing anaphase to ensue.
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发表时间: 2000-05-01
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