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Cdk2 as a master of S phase entry: fact or fake?

机译:CDK2作为S相条目的主人:事实或假货?

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摘要

It has long been believed that Cdk2 and its activator cyclin E play essential roles in the progression of the mitotic cell cycle. However, recent studies using knockout mouse models revealed that neither Cdk2 nor cyclin E are essential in vivo. The purpose of this Perspective is to compare both Cdk2 and cyclin E knockout mice models and to discuss potential mechanisms driving the cell cycle in the absence of Cdk2 or cyclin E. Particular emphasis is placed on possible non-catalytic roles of cyclin E, the expression and activity of the second cyclin binding partner of Cdk2, cyclin A, as well as on the expression and degradation of the Cdk2 inhibitor p27Kip1 in the absence of Cdk2.
机译:已经据信CDK2及其活化剂Cyclin E在有丝分裂细胞周期的进展中起主要作用。 然而,最近使用淘汰鼠标模型的研究表明,CDK2和Cyclin E都不是体内必不可少的。 这种观点的目的是比较CDK2和Cyclin E敲除小鼠模型,并讨论在没有CDK2或细胞周期蛋白E的情况下驱动细胞周期的潜在机制。特别强调是对细胞周期蛋白E的可能性的非催化作用,表达式 CDK2,细胞周期蛋白A,Cyclin A的第二细胞周期蛋白结合伴侣的活性以及CDK2抑制剂P27KIP1在不存在CDK2的情况下的表达和降解。

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