Regulation of bacterial Type III Secretion System export gate opening
Regulation of bacterial Type III Secretion System export gate opening
复制标题
细菌III型分泌系统出口门开放的调节
DOI:
10.1101/2021.01.17.426956
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Bryant O
中科院分区:
文献类型:
--
作者:
Bryant O
Type III Secretion Systems (T3SS) transport proteins from the bacterial cytosol for assembly into cell surface nanomachines or for direct delivery into target eukaryotic cells. At the core of the flagellar T3SS, the FlhAB-FliPQR export gate regulates protein entry into the export channel whilst maintaining the integrity of the cell membrane. Here, we identify critical residues in the export gate FliR plug that stabilise the closed conformation, preserving the membrane permeability barrier, and we show that the gate opens and closes in response to export substrate availability. Our data indicate that FlhAB-FliPQR gate opening, which is triggered by substrate export signals, is energised by FlhA in a proton motive force-dependent manner. We present evidence that the export substrate and the FliJ stalk of the flagellar ATPase provide mechanistically distinct, non-redundant gate-activating signals that are critical for efficient export.
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影响因子:
16.6
作者:
Miletic S;Fahrenkamp D;Goessweiner-Mohr N;Wald J;Pantel M;Vesper O;Kotov V;Marlovits TC
通讯作者:
Marlovits TC
DOI:
10.1073/pnas.120163297
发表时间:
2000-06-06
影响因子:
11.1
作者:
Datsenko, KA;Wanner, BL
通讯作者:
Wanner, BL
DOI:
10.15698/mic2014.01.128
发表时间:
2014-02-01
期刊:
Microbial cell (Graz, Austria)
影响因子:
--
作者:
Evans LD;Hughes C;Fraser GM
通讯作者:
Fraser GM
影响因子:
15.9
作者:
Evans, Lewis D. B.;Hughes, Colin;Fraser, Gillian M.
通讯作者:
Fraser, Gillian M.
DOI:
10.1101/2020.01.10.902387
发表时间:
2020
期刊:
--
影响因子:
--
作者:
Bryant O
通讯作者:
Bryant O