Structure and function of Salmonella SifA indicate that its interactions with SKIP, SseJ, and RhoA family GTPases induce endosomal tubulation.
Structure and function of Salmonella SifA indicate that its interactions with SKIP, SseJ, and RhoA family GTPases induce endosomal tubulation.
复制标题
DOI:
10.1016/j.chom.2008.08.012
复制
发表时间:
2008-11-13
影响因子:
30.3
通讯作者:
Miller SI
中科院分区:
文献类型:
--
作者:
Ohlson MB;Huang Z;Alto NM;Blanc MP;Dixon JE;Chai J;Miller SI
The Salmonella typhimurium type III secretion effector protein SifA is essential for inducing tubulation of the Salmonella phagosome and binds the mammalian kinesin-binding protein SKIP. Co-expression of SifA with the effector SseJ induced tubulation of mammalian cell endosomes, similar to that induced by Salmonella infection. Interestingly, GTP bound RhoA, RhoB, and RhoC also induced endosomal tubulation (ET) when co-expressed with SseJ, indicating that SifA likely mimics or activates a RhoA-family GTPase. The structure of SifA in complex with the PH domain of SKIP revealed that SifA has two distinct domains; the amino-terminus binds SKIP and the carboxyl-terminus has a fold similar to SopE, a Salmonella effector with Rho GTPase guanine nucleotide exchange factor activity (GEF). Similar to GEFs, SifA interacted with GDP-bound RhoA, and purifed SseJ and RhoA formed a protein complex, suggesting that SifA, SKIP, SseJ, and RhoA family GTPases cooperatively promote host membrane tubulation.
登录
查看更多内容
影响因子:
3.6
作者:
Nawabi, Parwez;Catron, Drew M.;Haldar, Kasturi
通讯作者:
Haldar, Kasturi
影响因子:
11.4
作者:
Buchwald, G;Friebel, A;Scheffzek, K
通讯作者:
Scheffzek, K
影响因子:
56.9
作者:
Boucrot, E;Henry, T;Méresse, S
通讯作者:
Méresse, S
影响因子:
5.4
作者:
Mitchell, EK;Mastroeni, P;Trowsdale, J
通讯作者:
Trowsdale, J
影响因子:
4.8
作者:
Reinicke, AT;Hutchinson, JL;Kelly, AP
通讯作者:
Kelly, AP