An energy transduction mechanism used in bacterial flagellar type III protein export.
An energy transduction mechanism used in bacterial flagellar type III protein export.
复制标题
细菌鞭毛III型蛋白质输出中使用的能量转导机制。
DOI:
10.1038/ncomms1488
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发表时间:
2011-09-20
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
作者:
Flagellar proteins of bacteria are exported by a specific export apparatus. FliI ATPase forms a complex with FliH and FliJ and escorts export substrates from the cytoplasm to the export gate complex, which is made up of six membrane proteins. The export gate complex utilizes proton motive force across the cytoplasmic membrane for protein translocation, but the mechanism remains unknown. Here we show that the export gate complex by itself is a proton–protein antiporter that uses the two components of proton motive force, Δψ and ΔpH, for different steps of the protein export process. However, in the presence of FliH, FliI and FliJ, a specific binding of FliJ with an export gate membrane protein, FlhA, is brought about by the FliH–FliI complex, which turns the export gate into a highly efficient, Δψ-driven protein export apparatus. A bacterial export gate complex transports flagellar proteins across the cytoplasmic membrane, but the mechanism of this process is unclear. Here, the export gate complex is revealed as a proton–protein antiporter that uses separate components of the proton motive force for different steps of the export process.
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影响因子:
3.2
作者:
Minamino, Tohru;Shimada, Masafumi;Namba, Keiichi
通讯作者:
Namba, Keiichi
DOI:
10.1016/j.bbrc.2009.08.004
发表时间:
2009-10-16
影响因子:
3.1
作者:
Kazetani, Ken-ichi;Minamino, Tohru;Namba, Keiichi
通讯作者:
Namba, Keiichi
影响因子:
3.2
作者:
Minamino, T;González-Pedrajo, B;Macnab, RM
通讯作者:
Macnab, RM
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
影响因子:
3.6
作者:
Minamino, Tohru;Yoshimura, Shinsuke D. J.;Namba, Keiichi
通讯作者:
Namba, Keiichi