Type III secretion systems shape up as they ship out.

Type III secretion systems shape up as they ship out.
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DOI:
10.1016/j.mib.2009.11.001
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发表时间:
2010-02
影响因子:
5.4
通讯作者:
Stebbins, C. Erec
Stebbins, C. Erec
中科院分区:
生物学2区
文献类型:
--
作者:
Marlovits, Thomas C.;Stebbins, C. Erec

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毒力相关蛋白III型分泌系统(T3 SS)是结构复杂的有机纳米注射器,可实现细菌蛋白从原核细胞质穿过三层膜转移到宿主细胞质中。这些系统的底物数以百计,具有显著不同的生物活性,调节宿主细胞生物学以利于病原体。尽管在T3SS底物的结构和功能上已经取得了巨大的进展,但在更高度保守的分泌装置本身上的进展相对较小。这篇综述总结了结构微生物学领域的最新进展,这些进展已经开始解决这一缺点,最终使结构生物学的力量承担革兰氏阴性细菌病原体的这种中央毒力系统。
Virulence associated protein Type III Secretion Systems (T3SS) are intricately structured organic nanosyringes that achieve the translocation of bacterial proteins from the prokaryotic cytoplasm across three membranes into the host cytosol. The substrates for these systems number in the hundreds, with remarkably diverse biological activities, modulating host cell biology for the benefit of the pathogen. Although there has been tremendous progress on the structure and function of the T3SS substrates, there has been comparatively little progress on the much more highly conserved secretion apparatus itself. This review summarizes recent advances in the field of structural microbiology that have begun to address this shortcoming, finally bringing to bear the power of structural biology to this central virulence system of Gram negative bacterial pathogens.
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