Cycloalkane-modified amphiphilic polymers provide direct extraction of membrane proteins for CryoEM analysis.
Cycloalkane-modified amphiphilic polymers provide direct extraction of membrane proteins for CryoEM analysis.
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DOI:
10.1038/s42003-021-02834-3
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发表时间:
2021-11-25
影响因子:
5.9
通讯作者:
Muench SP
中科院分区:
文献类型:
--
作者:
Higgins AJ;Flynn AJ;Marconnet A;Musgrove LJ;Postis VLG;Lippiat JD;Chung CW;Ceska T;Zoonens M;Sobott F;Muench SP
Membrane proteins are essential for cellular growth, signalling and homeostasis, making up a large proportion of therapeutic targets. However, the necessity for a solubilising agent to extract them from the membrane creates challenges in their structural and functional study. Although amphipols have been very effective for single-particle electron cryo-microscopy (cryoEM) and mass spectrometry, they rely on initial detergent extraction before exchange into the amphipol environment. Therefore, circumventing this pre-requirement would be a big advantage. Here we use an alternative type of amphipol: a cycloalkane-modified amphiphile polymer (CyclAPol) to extract Escherichia coli AcrB directly from the membrane and demonstrate that the protein can be isolated in a one-step purification with the resultant cryoEM structure achieving 3.2 Å resolution. Together this work shows that cycloalkane amphipols provide a powerful approach for the study of membrane proteins, allowing native extraction and high-resolution structure determination by cryoEM. Higgins et al. present a cycloalkane-modified amphiphilic polymer that can provide direct extraction of membrane proteins for Cryo-EM analysis. They show its utility by extracting and solving the structure of AcrB to a high resolution of 3.2 Å by single particle cryo-EM.
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DOI:
10.1016/j.bbamem.2016.02.037
发表时间:
2016-10
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Hedger G;Sansom MSP
通讯作者:
Sansom MSP
影响因子:
62.1
作者:
Chipot C;Dehez F;Schnell JR;Zitzmann N;Pebay-Peyroula E;Catoire LJ;Miroux B;Kunji ERS;Veglia G;Cross TA;Schanda P
通讯作者:
Schanda P
影响因子:
5.7
作者:
Du, Dijun;Neuberger, Arthur;Luisi, Ben F.
通讯作者:
Luisi, Ben F.
影响因子:
4.5
作者:
Johnson, Rachel M.;Fais, Chiara;Bavro, Vassiliy N.
通讯作者:
Bavro, Vassiliy N.
影响因子:
4.8
作者:
Le Bon, Christel;Marconnet, Anais;Zoonens, Manuela
通讯作者:
Zoonens, Manuela