The structural basis of promiscuity in small multidrug resistance transporters.
The structural basis of promiscuity in small multidrug resistance transporters.
复制标题
小型多药耐药转运蛋白滥交的结构基础。
DOI:
10.1038/s41467-020-19820-8
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发表时间:
2020-11-27
影响因子:
16.6
通讯作者:
Stockbridge RB
中科院分区:
文献类型:
--
作者:
Kermani AA;Macdonald CB;Burata OE;Ben Koff B;Koide A;Denbaum E;Koide S;Stockbridge RB
By providing broad resistance to environmental biocides, transporters from the small multidrug resistance (SMR) family drive the spread of multidrug resistance cassettes among bacterial populations. A fundamental understanding of substrate selectivity by SMR transporters is needed to identify the types of selective pressures that contribute to this process. Using solid-supported membrane electrophysiology, we find that promiscuous transport of hydrophobic substituted cations is a general feature of SMR transporters. To understand the molecular basis for promiscuity, we solved X-ray crystal structures of a SMR transporter Gdx-Clo in complex with substrates to a maximum resolution of 2.3 Å. These structures confirm the family’s extremely rare dual topology architecture and reveal a cleft between two helices that provides accommodation in the membrane for the hydrophobic substituents of transported drug-like cations. Gdx-Clo is a bacterial transporter from the small multidrug resistance (SMR) family. Here, the authors use solid supported membrane electrophysiology to characterize Gdx-Clo functionally and report crystal structures of Gdx-Clo which confirm the dual topology architecture and offer insight into substrate binding and transport mechanism.
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影响因子:
5.6
作者:
Koide, Akiko;Wojcik, John;Gilbreth, Ryan N.;Hoey, Robert J.;Koide, Shohei
通讯作者:
Koide, Shohei
DOI:
10.1126/science.1168750
发表时间:
2009-03-27
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Aller SG;Yu J;Ward A;Weng Y;Chittaboina S;Zhuo R;Harrell PM;Trinh YT;Zhang Q;Urbatsch IL;Chang G
通讯作者:
Chang G
影响因子:
13.8
作者:
Copley SD
通讯作者:
Copley SD
影响因子:
3.7
作者:
Jeong H;Nasir A
通讯作者:
Nasir A
DOI:
10.1107/s0907444911001314
发表时间:
2011-04
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Murshudov GN;Skubák P;Lebedev AA;Pannu NS;Steiner RA;Nicholls RA;Winn MD;Long F;Vagin AA
通讯作者:
Vagin AA