Substrate Specificity Switching of the Flagellum-specific Export Apparatus during Flagellar Morphogenesis in Salmonella typhimurium

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概要

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• During flagellar morphogenesis in Salmonella typhimurium, the flagellum-specific anti-sigma factor FlgM is exproted out of the cells only after completion of hook assembly. In this study, we examined the export of the flagellar proteins, FlgD (hook capping protein), FlgE (hook protein), FlgK and FlgL (hook-filament junction proteins), FliD (filament capping protein), and FliC (flagellin), before and after completion of hook assembly. Like the FlgM protein, the FlgK, FlgL, FliD, and FliC proteins are exported efficiently only after completion of hook assembly. On the other hand, the FlgD and FlgE proteins are exported efficiently before, but poorly after, hook completion. These results indicate that the export properties are different between these two groups and that their export order exactly parallels the assembly order of the hook-filament structure. We propose that the substrate specificity switching occurs in the flagellum-specific export apparatus upon completion of hook assembly.

• 社団法人日本農芸化学会の論文
• 1999-07-23

著者

• Doi Hiroyuki

  Faculty Of Applied Biological Science Hiroshima University

• Minamino Tohru

  Faculty Of Applied Biological Science Hiroshima University

• KUTSUKAKE Kazuhiro

  Facultyo of Applied Biological Science, Hiroshima University

• Kutsukake Kazuhiro

  Faculty Of Applied Biological Science Hiroshima University

関連論文

• Two novel regulatory genes, fliT and fliZ, in the flagellar regulon of Salmonella
• Promoter analysis of the class 2 flagellar operons of Salmonella
• Substrate Specificity Switching of the Flagellum-specific Export Apparatus during Flagellar Morphogenesis in Salmonella typhimurium
• Structure and transcriptional control of the flagellar master operon of Salmonella typhimurium
• Reevaluation of the promoter structure of the class 3 flagellar operons of Escherichia coli and Salmonella

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