Snf5 and Swi3 subcomplex formation is required for SWI/SNF complex function in yeast.

Snf5 and Swi3 subcomplex formation is required for SWI/SNF complex function in yeast.
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Snf5 和 Swi3 亚复合体的形成是酵母中 SWI/SNF 复合体功能所必需的。

DOI:
10.1016/j.bbrc.2020.03.169
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发表时间:
2020-04
期刊:
Biochem Biophys Res Commun
影响因子:
--
通讯作者:
Long Jiafu
Long Jiafu
中科院分区:
其他
文献类型:
--
作者:
Zhou Hao;Chen Guidong;Dong Chunming;Zhao Xiaozhou;Shen Zhongtian;Chen Feilong;Liu Beibei;Long Jiafu

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SWI/SNF染色质重塑复合物通过驱逐组蛋白或在DNA上滑动核小体来改变核小体位置,从酵母到人类高度保守,并且20%的人类癌症在SWI/SNF复合物的各种亚基中具有突变。在这里,我们报道了酵母Snf 5-Swi 3亚复合物的晶体结构,分辨率为2.65 nm。我们的研究结果表明,Snf 5-Swi 3亚复合物组装成异源三聚体,其中一个Snf 5分子结合到两个不同的Swi 3分子。此外,我们证明了Snf 5-Swi 3亚复合物的形成是酵母中SWI/SNF功能所必需的。这些发现揭示了Snf 5-Swi 3亚复合物在SWI/SNF复合物的组装和功能完整性中的重要作用。
The SWI/SNF chromatin remodeling complex, which alters nucleosome positions by either evicting histones or sliding nucleosomes on DNA, is highly conserved from yeast to humans, and 20% of all human cancers have mutations in various subunits of the SWI/SNF complex. Here, we reported the crystal structure of the yeast Snf5-Swi3 subcomplex at a resolution of 2.65 Å. Our results showed that the Snf5-Swi3 subcomplex assembles into a heterotrimer with one Snf5 molecule bound to two distinct Swi3 molecules. In addition, we demonstrated that Snf5-Swi3 subcomplex formation is required for SWI/SNF function in yeast. These findings shed light on the important role of the Snf5-Swi3 subcomplex in the assembly and functional integrity of the SWI/SNF complex.
哺乳动物SWI/SNF复合物的蛋白质组学和生物信息学分析确定了在人类恶性肿瘤中的广泛作用。
DOI: 10.1038/ng.2628
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