Structure and lipid dynamics in the A. baumannii maintenance of lipid asymmetry (MLA) inner membrane complex
Structure and lipid dynamics in the A. baumannii maintenance of lipid asymmetry (MLA) inner membrane complex
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鲍曼不动杆菌维持脂质不对称(MLA)内膜复合物的结构和脂质动力学
DOI:
10.1101/2020.05.30.125013
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Mann D
中科院分区:
文献类型:
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作者:
Mann D
Multi-resistant bacteria are a major threat in modern medicine. The gram-negative coccobacillusAcinetobacter baumanniicurrently leads the WHO list of pathogens in critical need for new therapeutic development. The maintenance of lipid asymmetry (MLA) protein complex is one of the core machineries that transport lipids from/to the outer membrane in gram-negative bacteria. It also contributes to broad-range antibiotic resistance in several pathogens, most prominently inA. baumannii. Nonetheless, the molecular details of its role in lipid transport has remained largely elusive.Here, we report the cryo-EM structures of the core MLA complex, MlaBDEF, from the pathogenA. baumannii, in the apo-, ATP- and ADB-bound states. These structures reveal multiple lipid binding sites, in the cytosolic and periplasmic side of the complex. Molecular dynamics simulations suggest their potential trajectory across the membrane. Collectively with the recently-reported structures of theE.coliorthologue, these data also allows us to propose a molecular mechanism of lipid transport by the MLA system.
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影响因子:
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作者:
R. Sánchez;Andrej Sali
通讯作者:
R. Sánchez;Andrej Sali
影响因子:
7.7
作者:
Powers MJ;Simpson BW;Trent MS
通讯作者:
Trent MS
影响因子:
5.6
作者:
Liu, Chuan;Ma, Jinying;Zhang, Li
通讯作者:
Zhang, Li
DOI:
10.1016/j.str.2013.08.005
发表时间:
2013-10-08
期刊:
Structure (London, England : 1993)
影响因子:
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作者:
Song Y;DiMaio F;Wang RY;Kim D;Miles C;Brunette T;Thompson J;Baker D
通讯作者:
Baker D
DOI:
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发表时间:
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