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Type III machines of Gram-negative bacteria: delivering the goods

机译:革兰氏阴性细菌的III型机器:运送货物

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摘要

Many Gram-negative pathogens use a type III secretion machine to translocate protein toxins across the bacterial cell envelope. Pathogenic Yersinia spp. export at least 14 Yop proteins via a type III machine, which recognizes secretion substrates by signals encoded in yop mRNA or chaperones bound to unfolded Yop proteins. During infection, substrate recognition appears to be regulated in a manner that allows the Yersinia type III pathway to direct Yops to the bacterial envelope, the extracellular medium or into the cytosol of host cells.
机译:许多革兰氏阴性病原体使用III型分泌机在整个细菌细胞膜中转运蛋白毒素。致病性耶尔森氏菌通过III型机器输出至少14种Yop蛋白,该机器通过yop mRNA或与未折叠的Yop蛋白结合的分子伴侣编码的信号识别分泌底物。在感染期间,底物识别似乎以允许耶尔森氏菌III型途径将Yops引导至细菌包膜,细胞外培养基或宿主细胞胞质溶胶的方式进行调节。

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