The central role of EED in the orchestration of polycomb group complexes.

The central role of EED in the orchestration of polycomb group complexes.
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DOI:
10.1038/ncomms4127
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发表时间:
2014
影响因子:
16.6
通讯作者:
Chinnaiyan, Arul M.
Chinnaiyan, Arul M.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Cao, Qi;Wang, Xiaoju;Zhao, Meng;Yang, Rendong;Malik, Rohit;Qiao, Yuanyuan;Poliakov, Anton;Yocum, Anastasia K.;Li, Yong;Chen, Wei;Cao, Xuhong;Jiang, Xia;Dahiya, Arun;Harris, Clair;Feng, Felix Y.;Kalantry, Sundeep;Qin, Zhaohui S.;Dhanasekaran, Saravana M.;Chinnaiyan, Arul M.

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多梳抑制复合体1和2(PRC1和2)在细胞分化、干细胞多能性和肿瘤进展过程中对转录的表观遗传调控起着关键作用。在这里,我们证明了多梳基团蛋白EED,PRC2的核心成分,在物理上与PRC1相互作用,并作为PRC1的一部分发挥功能。PRC1和PRC2的组件竞争EED结合。EED的功能是招募PRC1到H3K27me3位点,并增强PRC1介导的H_2A泛素E3连接酶的活性。综上所述,我们建议EED作为一个表观遗传交换因子来协调PRC1和2的活动,这是一个不可或缺的作用。
Polycomb Repressive Complexes 1 and 2 (PRC1 and 2) play a critical role in the epigenetic regulation of transcription during cellular differentiation, stem cell pluripotency, and neoplastic progression. Here we show that the Polycomb Group protein EED, a core component of PRC2, physically interacts with and functions as part of PRC1. Components of PRC1 and PRC2 compete for EED binding. EED functions to recruit PRC1 to H3K27me3 loci and enhances PRC1 mediated H2A ubiquitin E3 ligase activity. Taken together, we suggest an integral role for EED as an epigenetic exchange factor coordinating the activities of PRC1 and 2.
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