Distinct conformational spectrum of homologous multidrug ABC transporters.
Distinct conformational spectrum of homologous multidrug ABC transporters.
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DOI:
10.1016/j.str.2014.12.013
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发表时间:
2015-03-03
期刊:
影响因子:
5.7
通讯作者:
Zhang, Qinghai
中科院分区:
文献类型:
--
作者:
Moeller, Arne;Lee, Sung Chang;Tao, Houchao;Speir, Jeffrey A.;Chang, Geoffrey;Urbatsch, Ina L.;Potter, Clinton S.;Carragher, Bridget;Zhang, Qinghai
ATP-binding cassette (ABC) exporters are ubiquitously found in all kingdoms of life and their members play significant roles in mediating drug pharmacokinetics and multidrug resistance in the clinic. Significant questions and controversies remain regarding the relevance of their conformations observed in X-ray structures, their structural dynamics, and mechanism of transport. Here we used single particle electron microscopy (EM) to delineate the entire conformational spectrum of two homologous ABC exporters (bacterial MsbA and mammalian P-glycoprotein) and the influence of nucleotide and substrate binding. Newly developed amphiphiles in complex with lipids that support high protein stability and activity enabled EM visualization of individual complexes in a membrane-mimicking environment. The data provide a comprehensive view of the conformational flexibility of these ABC exporters under various states and demonstrate not only similarities but striking differences between their mechanistic and energetic regulation of conformational changes.
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DOI:
10.1126/science.1246489
发表时间:
2014-03-07
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Lee JY;Yang JG;Zhitnitsky D;Lewinson O;Rees DC
通讯作者:
Rees DC
影响因子:
3
作者:
Hohn, Michael;Tang, Grant;Ludtke, Steven J.
通讯作者:
Ludtke, Steven J.
DOI:
10.1165/rcmb.2003-0184oc
发表时间:
2004-03-01
影响因子:
6.4
作者:
Ito, Y;Son, M;Kume, H
通讯作者:
Kume, H
影响因子:
4.8
作者:
Eckford, Paul D. W.;Sharom, Frances J.
通讯作者:
Sharom, Frances J.
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