A histone code for the DNA damage response in mammalian cells?
A histone code for the DNA damage response in mammalian cells?
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DOI:
10.1038/emboj.2009.180
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发表时间:
2009-07-08
期刊:
影响因子:
11.4
通讯作者:
Almouzni, Genevieve
中科院分区:
文献类型:
--
作者:
Corpet, Armelle;Almouzni, Genevieve
DNA repair in the context of chromatin represents a challenge both in terms of accessibility to the lesion and maintenance of genome stability. Histones, the main protein component of chromatin, can be subjected to a variety of post-translational modifications (PTMs) that impact on genome function by either directly affecting nucleosome stability or providing a docking site for distinct regulatory proteins. In this issue of EMBO Journal, Tjeertes et al investigate histone PTMs with a specific involvement in the DNA damage response (DDR).After DNA damage, a prominent change at the chromatin level is the increase in H2A. X phosphorylation (YH2A. X) known to elicit recruitment and activation of many effector proteins (Figure 1)(van Attikum and Gasser, 2009). Interestingly, early work showed that after UV damage in human fibroblasts, a wave of hyperacetylation followed by subsequent deacetylation occurred on histones at a global level (Ramanathan and Smerdon, 1986). Such connection with histone acetylation has been further substantiated in the context of DSB with the Tip60 HAT complex leading to the
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