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The many roads to checkpoint activation

机译:激活检查点的许多方法

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The genome of eukaryotic organisms is under constant surveillance by the DNA damage checkpoint (DDC) signaling network. In budding yeast, the sensor kinase Mec1~(hATR) and the downstream kinase Rad53~(hCHK2) are the main checkpoint kinases in the DDC network. Mec1 and Rad53 play crucial roles in the preservation of genomic integrity and cell viability, as they regulate key effector proteins involved in processes such as DNA replication, repair, transcription and cell cycle control. Over the past 15 y, significant progress has been made in understanding how checkpoint kinases are activated, but are we close to a full mechanistic understanding of DDC activation and regulation? According to a recent paper in the October 15,2012 edition of Cell Cycle by Wang et al.,1 the answer is: not really.
机译:真核生物的基因组受到DNA损伤检查点(DDC)信号网络的不断监视。在发芽酵母中,传感器激酶Mec1〜(hATR)和下游激酶Rad53〜(hCHK2)是DDC网络中的主要检查点激酶。 Mec1和Rad53在基因组完整性和细胞生存力的维持中起着至关重要的作用,因为它们调节参与DNA复制,修复,转录和细胞周期控制等过程的关键效应蛋白。在过去的15年中,在了解检查点激酶如何激活方面已经取得了重大进展,但是我们是否对DDC激活和调节的机理有了充分的了解?根据Wang等人在2012年10月15日的《细胞周期》杂志上发表的一篇最新论文,答案是:并非如此。

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