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MRX, an evolutionally conserved DNA damage response complex composed of Mre11, Rad50 and Xrs2, is involved in DNA double strand break (DSB) repair, checkpoint activation and telomere maintenance. At DSBs, MRX plays a role in generating single stranded DNA (ssDNA) and signalling cell cycle arrest. Here we investigated whether MRX also contributes to generating ssDNA or signalling cell cycle arrest...
Cell division and the response to genotoxic stress are intimately connected in eukaryotes, for example, by checkpoint pathways that signal the presence of DNA damage or its ongoing repair to the cell cycle machinery, leading to reversible arrest or apoptosis. Recent studies reveal another connection: the cyclin-dependent kinases (CDKs) that govern both DNA synthesis (S) phase and mitosis directly...
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