An embedded lipid in the multidrug transporter LmrP suggests a mechanism for polyspecificity.
An embedded lipid in the multidrug transporter LmrP suggests a mechanism for polyspecificity.
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DOI:
10.1038/s41594-020-0464-y
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发表时间:
2020-09
影响因子:
16.8
通讯作者:
Govaerts C
中科院分区:
文献类型:
--
作者:
Debruycker V;Hutchin A;Masureel M;Ficici E;Martens C;Legrand P;Stein RA;Mchaourab HS;Faraldo-Gómez JD;Remaut H;Govaerts C
Multidrug efflux pumps present a challenge to treatment of bacterial infections, making it vitally important to understand their mechanism of action. Here we investigated the nature of substrate binding within LmrP of L. lactis, a prototypical multidrug transporter of the major facilitator superfamily. We determined the crystal structure of LmrP in a ligand-bound outward-open state and observed an embedded lipid in the binding cavity of LmrP. Molecular dynamics simulations, directed mutagenesis and native mass spectrometry confirm the presence of an anionic lipid, and show its need to stabilise the observed ligand-bound structure. Mutants engineered to disrupt binding of the embedded lipid display reduced transport of some, but not all antibiotic substrates. Our results suggest that a lipid within the binding cavity could provide a malleable hydrophobic component that allows adaptation to the presence of different substrates, helping to explain the broad specificity of this protein and possibly other multidrug transporters.
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影响因子:
3.3
作者:
Klauda, Jeffery B.;Venable, Richard M.;Freites, J. Alfredo;O'Connor, Joseph W.;Tobias, Douglas J.;Mondragon-Ramirez, Carlos;Vorobyov, Igor;MacKerell, Alexander D., Jr.;Pastor, Richard W.
通讯作者:
Pastor, Richard W.
影响因子:
5.5
作者:
Best, Robert B.;Zhu, Xiao;Shim, Jihyun;Lopes, Pedro E. M.;Mittal, Jeetain;Feig, Michael;MacKerell, Alexander D., Jr.
通讯作者:
MacKerell, Alexander D., Jr.
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
DOI:
10.1107/s0907444909042073
发表时间:
2010-01
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Chen VB;Arendall WB 3rd;Headd JJ;Keedy DA;Immormino RM;Kapral GJ;Murray LW;Richardson JS;Richardson DC
通讯作者:
Richardson DC
影响因子:
1.8
作者:
Ladinig, M;Leupin, W;Zoete, V
通讯作者:
Zoete, V