Type 9 secretion system structures reveal a new protein transport mechanism.

Type 9 secretion system structures reveal a new protein transport mechanism.
复制标题

DOI:
10.1038/s41586-018-0693-y
复制
发表时间:
2018-12
期刊:
影响因子:
64.8
通讯作者:
Berks BC
Berks BC
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Lauber F;Deme JC;Lea SM;Berks BC

文献摘要

参考文献

被引文献

相似文献

IX型分泌系统(T9 SS)是革兰氏阴性纤维杆菌-绿双杆菌-拟杆菌超门细菌的蛋白质输出途径,并且是严重牙周病中的重要致病性决定因素。T9 SS的中心元件是位于细菌外膜中的迄今为止未表征的蛋白质传导易位子。使用冷冻电子显微镜,我们现在提供的结构证据表明,易位是T9 SS蛋白SprA。SprA形成前所未有的大(36链)单多肽跨膜β-桶。桶孔在细胞外端被覆盖,但具有通向外膜表面的侧向开口。结合到不同的T9 SS组件的SprA的结构表明,伴侣蛋白控制访问的侧开口和孔的周质端。我们的研究结果揭示了一种独特的蛋白质转运蛋白的结构,操作一种新的交替访问机制,其中蛋白质传导通道的两端在不同的时间打开。
The Type IX Secretion system (T9SS) is the protein export pathway of bacteria of the Gram-negative Fibrobacteres-Chlorobi-Bacteroidetes superphylum and is an essential pathogenicity determinant in severe periodontal disease. The central element of the T9SS is a so far uncharacterized protein-conducting translocon located in the bacterial outer membrane. Using cryo-electron microscopy we now provide structural evidence that the translocon is the T9SS protein SprA. SprA forms an unprecedentedly large (36-strand) single polypeptide transmembrane β-barrel. The barrel pore is capped on the extracellular end, but has a lateral opening to the external membrane surface. Structures of SprA bound to different T9SS components demonstrate that partner proteins control access to the lateral opening and to the periplasmic end of the pore. Our results uncover a protein transporter of distinctive architecture that operates a novel alternating access mechanism in which the two ends of the protein conducting channel are open at different times.
DOI: 10.1128/jb.02085-14
发表时间: 2015-01-01
影响因子: 3.2
作者:
Kharade, Sampada S.;McBride, Mark J.
通讯作者: McBride, Mark J.
DOI: 10.1021/pr101065j
发表时间: 2011-04-01
影响因子: 4.4
作者:
Cox, Juergen;Neuhauser, Nadin;Mann, Matthias
通讯作者: Mann, Matthias
DOI: 10.1038/srep11969
发表时间: 2015-07-01
期刊: Scientific reports
影响因子: 4.6
作者:
Goulas T;Mizgalska D;Garcia-Ferrer I;Kantyka T;Guevara T;Szmigielski B;Sroka A;Millán C;Usón I;Veillard F;Potempa B;Mydel P;Solà M;Potempa J;Gomis-Rüth FX
通讯作者: Gomis-Rüth FX
DOI: 10.1107/s0907444909052925
发表时间: 2010-02
期刊: Acta crystallographica. Section D, Biological crystallography
影响因子: --
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者: Zwart PH
DOI: 10.1038/nature13768
发表时间: 2014-12-11
期刊: NATURE
影响因子: 64.8
作者:
Goyal, Parveen;Krasteva, Petya V.;Van Genven, Nani;Gubellini, Francesca;Van den Broeck, Imke;Troupiotis-Tsailaki, Anastassia;Jonckheere, Wim;Pehau-Arnaudet, Gerard;Pinkner, Jerome S.;Chapman, Matthew R.;Hultgren, Scott J.;Howorka, Stefan;Fronzes, Remi;Remaut, Han
通讯作者: Remaut, Han