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Role of catechol siderophore synthesis in Vibrio vulnificus virulence.

机译:邻苯二酚铁载体合成在创伤弧菌毒力中的作用。

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We isolated a Vibrio vulnificus TnphoA mutant that was unable to produce catechol siderophores or to acquire iron from transferrin. This mutant showed reduced virulence in an infant mouse model. The TnphoA insertion was in an open reading frame designated venB. The venB gene cloned on a plasmid restored catechol production to the mutant. The deduced amino acid sequence of venB is 41% identical to the enzyme isochorismatase of Escherichia coli (EntB), an enzyme involved in the biosynthesis of the catechol siderophore enterobactin.
机译:我们分离了一个创伤弧菌TnphoA突变体,该突变体无法产生邻苯二酚铁载体或无法从转铁蛋白中获得铁。该突变体在婴儿小鼠模型中显示出降低的毒力。 TnphoA插入位于一个名为venB的开放阅读框中。克隆在质粒上的venB基因使邻苯二酚恢复为突变体。推导的venB氨基酸序列与大肠杆菌(EntB)的等轴线酶(EntB)是一种41%相同,该酶参与了邻苯二酚铁载体肠杆菌素的生物合成。

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