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Mechanism of histone dimethylation regulating DNA damage response

Mechanism of histone dimethylation regulating DNA damage response
组蛋白二甲基化调节DNA损伤反应的机制
批准号:
23310038
负责人:
SUZUKI Keiji
金额:
$12.15万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (B)
财政年份:
2011
资助国家:
日本
项目状态:
已结题
起止时间:
2011-04-01 至 2014-03-31

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英文摘要
To secure genome integrity of the cells DNA damage signals are amplified and persists, if DNA double strand breaks are remained. This study demonstrated that , G9a, a histone H3 dimethylase, is involved in persisted DNA damage signal amplification. G9a was found to be relocated to the chromatin regions harboring DNA damage, and it executed dimethylation of histone H3 at Lysine 9. Dimethylated histone H3 at Lysine 9 was recognized by 53BP1 through its so-called Tudor domain, thereby amplified 53BP1 foci formation was maintained. The study indicated that dimethylation of histone H3 at Lysine 9 by recruted G9a to DNA damage sites is essential for the persistence of amplified DNA damage signals.
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