PP2A function toward mitotic kinases and substrates during the cell cycle.

PP2A function toward mitotic kinases and substrates during the cell cycle.
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PP2A在细胞周期中对有丝分裂激酶和底物的功能。

DOI:
10.5483/bmbrep.2013.46.6.041
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发表时间:
2013-06
期刊:
影响因子:
3.8
通讯作者:
Yang Y
Yang Y
中科院分区:
生物学3区
文献类型:
--
作者:
Jeong AL;Yang Y

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为了维持细胞内稳态对抗细胞外环境的需求,激酶和磷酸酶的精确调节是必需的。在细胞周期调控机制中,细胞周期蛋白依赖性激酶(CDK 1)和细胞周期蛋白B复合物(CDK 1:cyclin B)的激活引起蛋白磷酸化的显著变化。CDK 1:cyclin B的激活受两个自身扩增环的调节-CDK 1:cyclin B激活Cdc 25,其自身的激活磷酸酶,并抑制Wee 1,其自身的抑制激酶。最近的生物学证据表明,其抵消磷酸酶活性的抑制也发生了,它是平行于有丝分裂过程中的CDK 1:细胞周期蛋白B激活。有丝分裂激酶及其底物的磷酸酶调节对于确保细胞周期的有序进行是必不可少的。概述激酶和磷酸酶的相互控制如何控制细胞分裂的定位和时间,将使我们对细胞周期调控有一个新的认识。[BMB报告2013; 46(6):289-294]
To maintain cellular homeostasis against the demands of the extracellular environment, a precise regulation of kinases and phosphatases is essential. In cell cycle regulation mechanisms, activation of the cyclin-dependent kinase (CDK1) and cyclin B complex (CDK1:cyclin B) causes a remarkable change in protein phosphorylation. Activation of CDK1:cyclin B is regulated by two auto-amplification loops-CDK1:cyclin B activates Cdc25, its own activating phosphatase, and inhibits Wee1, its own inhibiting kinase. Recent biological evidence has revealed that the inhibition of its counteracting phosphatase activity also occurs, and it is parallel to CDK1:cyclin B activation during mitosis. Phosphatase regulation of mitotic kinases and their substrates is essential to ensure that the progression of the cell cycle is ordered. Outlining how the mutual control of kinases and phosphatases governs the localization and timing of cell division will give us a new understanding about cell cycle regulation. [BMB Reports 2013; 46(6): 289-294]
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