Structural insights into H+-coupled multidrug extrusion by a MATE transporter.
Structural insights into H+-coupled multidrug extrusion by a MATE transporter.
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DOI:
10.1038/nsmb.2687
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发表时间:
2013-11
影响因子:
16.8
通讯作者:
Guo, Yi
中科院分区:
文献类型:
--
作者:
Lu, Min;Radchenko, Martha;Symersky, Jindrich;Nie, Rongxin;Guo, Yi
Multidrug and toxic compound extrusion (MATE) transporters contribute to multidrug resistance by coupling the efflux of drugs to the influx of Na+ or H+. Known structures of Na+-coupled, extracellular-facing MATE transporters from the NorM subfamily revealed twelve membrane-spanning segments related by a quasi-twofold rotational symmetry and a multidrug-binding cavity situated near the membrane surface. Here we report the crystal structure of an H+-coupled MATE transporter from Bacillus halodurans and the DinF subfamily at 3.2 Å-resolution, unveiling a surprisingly asymmetric arrangement of twelve transmembrane helices. We also identified a membrane-embedded substrate-binding chamber by combining crystallographic and biochemical analyses. Our studies further suggested a direct competition between H+ and substrate during DinF-mediated transport, and how a MATE transporter alternates between its extracellular- and intracellular-facing conformations to propel multidrug extrusion. Collectively, our results demonstrated hitherto unrecognized mechanistic diversity among MATE transporters.
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影响因子:
2.6
作者:
Huda, MN;Chen, J;Tsuchiya, T
通讯作者:
Tsuchiya, T
DOI:
10.1126/science.1176667
发表时间:
2009-08-28
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Fischbach MA;Walsh CT
通讯作者:
Walsh CT
影响因子:
2.9
作者:
Bas, Delphine C.;Rogers, David M.;Jensen, Jan H.
通讯作者:
Jensen, Jan H.
影响因子:
3.2
作者:
He, GX;Kuroda, T;Tsuchiya, T
通讯作者:
Tsuchiya, T
DOI:
10.1073/pnas.1219901110
发表时间:
2013-02-05
影响因子:
11.1
作者:
Lu, Min;Symersky, Jindrich;Koide, Shohei
通讯作者:
Koide, Shohei