Structure of a bacterial type IV secretion core complex at subnanometre resolution.
Structure of a bacterial type IV secretion core complex at subnanometre resolution.
复制标题
DOI:
10.1038/emboj.2013.58
复制
发表时间:
2013-04-17
期刊:
影响因子:
11.4
通讯作者:
Orlova, Elena V.
中科院分区:
文献类型:
--
作者:
Rivera-Calzada, Angel;Fronzes, Remi;Savva, Christos G.;Chandran, Vidya;Lian, Pei W.;Laeremans, Toon;Pardon, Els;Steyaert, Jan;Remaut, Han;Waksman, Gabriel;Orlova, Elena V.
Type IV secretion (T4S) systems are able to transport DNAs and/or proteins through the membranes of bacteria. They form large multiprotein complexes consisting of 12 proteins termed VirB1-11 and VirD4. VirB7, 9 and 10 assemble into a 1.07 MegaDalton membrane-spanning core complex (CC), around which all other components assemble. This complex is made of two parts, the O-layer inserted in the outer membrane and the I-layer inserted in the inner membrane. While the structure of the O-layer has been solved by X-ray crystallography, there is no detailed structural information on the I-layer. Using high-resolution cryo-electron microscopy and molecular modelling combined with biochemical approaches, we determined the I-layer structure and located its various components in the electron density. Our results provide new structural insights on the CC, from which the essential features of T4S system mechanisms can be derived.
登录
查看更多内容
影响因子:
3
作者:
Birmanns, Stefan;Rusu, Mirabela;Wriggers, Willy
通讯作者:
Wriggers, Willy
DOI:
10.1073/pnas.1830264100
发表时间:
2003-09-02
影响因子:
11.1
作者:
Llosa, M;Zunzunegui, S;de la Cruz, F
通讯作者:
de la Cruz, F
影响因子:
3.6
作者:
Atmakuri, K;Cascales, E;Christie, PJ
通讯作者:
Christie, PJ
影响因子:
14.8
作者:
通讯作者:
--
影响因子:
3
作者:
Pettersen, EF;Goddard, TD;Ferrin, TE
通讯作者:
Ferrin, TE