Structure of the mycobacterial ESX-5 type VII secretion system pore complex.
Structure of the mycobacterial ESX-5 type VII secretion system pore complex.
复制标题
分枝杆菌ESX-5 VII型分泌系统孔复合物的结构。
DOI:
10.1126/sciadv.abg9923
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发表时间:
2021-06
期刊:
影响因子:
13.6
通讯作者:
Wilmanns M
中科院分区:
文献类型:
--
作者:
Beckham KSH;Ritter C;Chojnowski G;Ziemianowicz DS;Mullapudi E;Rettel M;Savitski MM;Mortensen SA;Kosinski J;Wilmanns M
The structure of the mycobacterial ESX-5 secretion system reveals a central transmembrane pore. The ESX-5 type VII secretion system is a membrane-spanning protein complex key to the virulence of mycobacterial pathogens. However, the overall architecture of the fully assembled translocation machinery and the composition of the central secretion pore have remained unknown. Here, we present the high-resolution structure of the 2.1-megadalton ESX-5 core complex. Our structure captured a dynamic, secretion-competent conformation of the pore within a well-defined transmembrane section, sandwiched between two flexible protein layers at the cytosolic entrance and the periplasmic exit. We propose that this flexibility endows the ESX-5 machinery with large conformational plasticity required to accommodate targeted protein secretion. Compared to known secretion systems, a highly dynamic state of the pore may represent a fundamental principle of bacterial secretion machineries.
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影响因子:
7.4
作者:
Bird, Susan S.;Marur, Vasant R.;Sniatynski, Matthew J.;Greenberg, Heather K.;Kristal, Bruce S.
通讯作者:
Kristal, Bruce S.
影响因子:
48
作者:
Frenz B;Walls AC;Egelman EH;Veesler D;DiMaio F
通讯作者:
DiMaio F
DOI:
10.1107/s0907444905036693
发表时间:
2006-01-01
影响因子:
2.2
作者:
Evans, P
通讯作者:
Evans, P
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
28.3
作者:
Beckham, Katherine S. H.;Ciccarelli, Luciano;Houben, Edith N. G.
通讯作者:
Houben, Edith N. G.