Molecular structure of the intact bacterial flagellar basal body.
Molecular structure of the intact bacterial flagellar basal body.
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DOI:
10.1038/s41564-021-00895-y
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发表时间:
2021-06
影响因子:
28.3
通讯作者:
Lea SM
中科院分区:
文献类型:
--
作者:
Johnson S;Furlong EJ;Deme JC;Nord AL;Caesar JJE;Chevance FFV;Berry RM;Hughes KT;Lea SM
The bacterial flagellum is a macromolecular protein complex that enables motility in many species. Bacterial flagella self-assemble a strong, multi-component drive shaft which couples rotation in the inner membrane to the microns-long flagellar filament that powers bacterial swimming in viscous fluids. We here present structures of the intact Salmonella flagellar basal body, encompassing the inner membrane rotor, drive shaft, and outer membrane bushing, solved using cryo-electron microscopy to resolutions between 2.2 and 3.7 Å. The structures reveal molecular details of how 173 protein molecules of 13 different types assemble into a complex spanning two membranes and a cell wall. The helical drive shaft at one end is intricately interwoven with the rotor component with both the export gate complex and the proximal rod forming interactions with the MS-ring. At the other end, the drive shaft distal rod passes through the LP-ring bushing complex, which functions as a molecular bearing anchored in the outer membrane via interactions with the lipopolysaccharide. The in situ structure of a protein complex capping the drive shaft provides molecular insight into the assembly process of this molecular machine.
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影响因子:
9.8
作者:
Fukumura T;Makino F;Dietsche T;Kinoshita M;Kato T;Wagner S;Namba K;Imada K;Minamino T
通讯作者:
Minamino T
影响因子:
28.3
作者:
Deme JC;Johnson S;Vickery O;Aron A;Monkhouse H;Griffiths T;James RH;Berks BC;Coulton JW;Stansfeld PJ;Lea SM
通讯作者:
Lea SM
DOI:
10.1007/978-1-4939-6927-2_6
发表时间:
2017-01-01
期刊:
BACTERIAL FLAGELLUM: METHODS AND PROTOCOLS
影响因子:
--
作者:
Aizawa, Shin-Ichi
通讯作者:
Aizawa, Shin-Ichi
DOI:
10.1107/s2059798318006551
发表时间:
2018-06-01
期刊:
Acta crystallographica. Section D, Structural biology
影响因子:
--
作者:
Afonine PV;Poon BK;Read RJ;Sobolev OV;Terwilliger TC;Urzhumtsev A;Adams PD
通讯作者:
Adams PD
影响因子:
10.5
作者:
Chevance, Fabienne F. V.;Takahashi, Noriko;Hughes, Kelly T.
通讯作者:
Hughes, Kelly T.