期刊
CELL CYCLE
卷 5, 期 13, 页码 1376-1381出版社
LANDES BIOSCIENCE
DOI: 10.4161/cc.5.13.2899
关键词
checkpoint; DNA double-strand breaks; DNA repair; chromatin; H2AX
类别
A key function of the conserved signaling cascade triggered by DNA damage is to promote the arrest or pause of cell cycle progression, a phenomenon commonly termed a checkpoint. This response allows time for DNA repair to proceed before entering a new phase of the cell cycle. Although much is known about the initiation and propagation of this signaling pathway, much less is understood about the mechanisms that lead to its extinction. Recent work highlights a role for H2AX phosphorylation as a checkpoint maintenance factor and of its dephosphorylation as a signal for resumption of the cell cycle.
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