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The multilayer regulation of the metaphase-to-anaphase transition.

机译:中期到后期过渡的多层调节。

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摘要

The fluctuating activity of the cyclin-dependent kinases (Cdks) is critical for the periodic phosphorylation of a given Cdk substrate. Previous studies have been focus on the positive role of Cdk-dependent protein phosphorylation in cell cycle progression. Recent studies indicate that, in budding yeast, highly active S-phase cyclin-associated Cdk not only promotes DNA synthesis but also inhibits the initiation of chromosome segregation. The FEAR (Cdc14 early anaphase release) pathway alleviates the negative effect of the S-phase cyclin on anaphase by promoting the dephosphorylation of S-phase cyclin-specific substrates, revealing a new layer of regulation in the metaphase-to-anaphase transition.
机译:细胞周期蛋白依赖性激酶(Cdks)的波动活性对于给定Cdk底物的周期性磷酸化至关重要。以前的研究一直集中在Cdk依赖性蛋白磷酸化在细胞周期进程中的积极作用。最近的研究表明,在发芽酵母中,高活性S期细胞周期蛋白相关的Cdk不仅促进DNA合成,而且抑制染色体分离的启动。 FEAR(Cdc14早期后期释放)途径通过促进S期细胞周期蛋白特异性底物的去磷酸化,减轻了S期细胞周期蛋白对后期的负面影响,从而揭示了从中期到后期过渡的新调控层。

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