Cryo-EM structures of the ATP-bound Vps4(E233Q) hexamer and its complex with Vta1 at near-atomic resolution.
Cryo-EM structures of the ATP-bound Vps4(E233Q) hexamer and its complex with Vta1 at near-atomic resolution.
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ATP 结合的 Vps4(E233Q) 六聚体及其与 Vta1 复合物的近原子分辨率冷冻电镜结构
DOI:
10.1038/ncomms16064
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发表时间:
2017-07-17
影响因子:
16.6
通讯作者:
Sui SF
中科院分区:
文献类型:
--
作者:
Sun S;Li L;Yang F;Wang X;Fan F;Yang M;Chen C;Li X;Wang HW;Sui SF
The cellular ESCRT-III (endosomal sorting complex required for transport-III) and Vps4 (vacuolar protein sorting 4) comprise a common machinery that mediates a variety of membrane remodelling events. Vps4 is essential for the machinery function by using the energy from ATP hydrolysis to disassemble the ESCRT-III polymer into individual proteins. Here, we report the structures of the ATP-bound Vps4E233Q hexamer and its complex with the cofactor Vta1 (vps twenty associated 1) at resolutions of 3.9 and 4.2 Å, respectively, determined by electron cryo-microscopy. Six Vps4E233Q subunits in both assemblies exhibit a spiral-shaped ring-like arrangement. Locating at the periphery of the hexameric ring, Vta1 dimer bridges two adjacent Vps4 subunits by two different interaction modes to promote the formation of the active Vps4 hexamer during ESCRT-III filament disassembly. The structural findings, together with the structure-guided biochemical and single-molecule analyses, provide important insights into the process of the ESCRT-III polymer disassembly by Vps4. The ESCRT-III and Vps4 complexes mediate a variety of membrane remodelling events. Here the authors describe the structure of the Vps4 hexamer complexed to its cofactor Vta1, and show that Vta1 bridges adjacent Vps4 subunits to promote formation of the active hexamer during ESCRT-III filament disassembly.
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影响因子:
48
作者:
Li, Xueming;Mooney, Paul;Zheng, Shawn;Booth, Christopher R.;Braunfeld, Michael B.;Gubbens, Sander;Agard, David A.;Cheng, Yifan
通讯作者:
Cheng, Yifan
影响因子:
48
作者:
Barad BA;Echols N;Wang RY;Cheng Y;DiMaio F;Adams PD;Fraser JS
通讯作者:
Fraser JS
影响因子:
48
作者:
Kucukelbir, Alp;Sigworth, Fred J.;Tagare, Hemant D.
通讯作者:
Tagare, Hemant D.
DOI:
10.1083/jcb.200508166
发表时间:
2006-02-27
期刊:
The Journal of cell biology
影响因子:
--
作者:
Azmi I;Davies B;Dimaano C;Payne J;Eckert D;Babst M;Katzmann DJ
通讯作者:
Katzmann DJ
影响因子:
14.9
作者:
Zhang N;Joly N;Buck M
通讯作者:
Buck M