Destroying the ring: Freeing DNA from Ku with ubiquitin.
Destroying the ring: Freeing DNA from Ku with ubiquitin.
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DOI:
10.1016/j.febslet.2011.05.046
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发表时间:
2011-09-16
期刊:
影响因子:
3.5
通讯作者:
Postow L
中科院分区:
文献类型:
--
作者:
Postow L
The Ku heterodimer, consisting of the proteins Ku70 and Ku80, is the central component of the nonhomologous end joining (NHEJ) pathway of double strand break (DSB) repair. Ku is able to recognize and bind a DSB by virtue of its ring-like structure. Both pre-repair and topologically trapped post-repair Ku heterodimers are thought to be inhibitory to multiple cellular processes. Thus, a regulated mechanism for the removal of Ku from chromatin was predicted to exist. Recent evidence shows that Ku80 is removed from DNA through a ubiquitin-mediated process. Similar processes have been shown to be involved in the regulated dissociation of a host of other proteins from chromatin, and this appears to be a general and conserved mechanism for the regulation of chromatin-associated factors. A potential mechanism for this pathway is discussed.
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DOI:
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发表时间:
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期刊:
Trends in genetics : TIG
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