The ins and outs of Mycobacterium tuberculosis protein export.

The ins and outs of Mycobacterium tuberculosis protein export.
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DOI:
10.1016/j.tube.2011.11.005
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发表时间:
2012-03
期刊:
Tuberculosis (Edinburgh, Scotland)
影响因子:
--
通讯作者:
Braunstein M
Braunstein M
中科院分区:
其他
文献类型:
--
作者:
Ligon LS;Hayden JD;Braunstein M

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结核分枝杆菌是一种重要的病原体,感染了世界上大约三分之一的人口,每年造成近200万人死亡。结核分枝杆菌生理学和发病机制的一个重要方面是其将蛋白质输出到并穿过厚的分枝杆菌细胞包膜的能力,在那里它们处于与宿主相互作用的理想位置。除了结核分枝杆菌输出的特定蛋白质外,这些蛋白质输出的系统代表了未来药物开发的潜在目标。结核分枝杆菌具有两个众所周知且保守的出口系统:内务通路Sec和Tat途径。此外,结核分枝杆菌具有专门的出口系统,包括附属SecA2途径和五个ESX途径。在这里,我们回顾了目前对这些输出系统的理解,重点是结核分枝杆菌,并讨论了每个系统对疾病和生理学的贡献。
Mycobacterium tuberculosis is an important pathogen that infects approximately one third of the world’s population and kills almost two million people annually. An important aspect of M. tuberculosis physiology and pathogenesis is its ability to export proteins into and across the thick mycobacterial cell envelope, where they are ideally positioned to interact with the host. In addition to the specific proteins that are exported by M. tuberculosis, the systems through which these proteins are exported represent potential targets for future drug development. M. tuberculosis possesses two well-known and conserved export systems: the housekeeping Sec pathway and the Tat pathway. In addition, M. tuberculosis possesses specialized export systems including the accessory SecA2 pathway and five ESX pathways. Here we review the current understanding of each of these export systems, with a focus on M. tuberculosis, and discuss the contribution of each system to disease and physiology.
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