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首页> 外文期刊>Plasmid: An International Journal Devoted to Extrachromosomal Gene Systems >Bacillus subtilis EdmS (formerly PgsE) participates in the maintenance of episomes
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Bacillus subtilis EdmS (formerly PgsE) participates in the maintenance of episomes

机译:枯草芽孢杆菌EdmS(以前称为PgsE)参与附加体的维持

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摘要

Extrachromosomal DNA maintenance (EDM) is an important process in molecular breeding and for various applications in the construction of genetically engineered microbes. Here we describe a novel Bacillus subtilis gene involved in EDM function called edmS (formerly pgsE). Functional gene regions were identified using molecular genetics techniques. We found that EdmS is a membrane-associated protein that is crucial for EDM. We also determined that EdmS can change a plasmid vector with an unstable replicon and worse-than-random segregation into one with better-than-random segregation, suggesting that the protein functions in the declustering and/or partitioning of episomes. EdmS has two distinct domains: an N-terminal membrane-anchoring domain and a C-terminal assembly accelerator-like structure, and mutational analysis of edmS revealed that both domains are essential for EDM. Further studies using cells of Bacillus megaterium and its. edmS (formerly capE) gene implied that EdmS has potential as a molecular probe for exploring novel EDM systems.
机译:染色体外DNA维持(EDM)是分子育种中的重要过程,并且在基因工程微生物的构建中有多种应用。在这里,我们描述了一种新的参与EDM功能的枯草芽孢杆菌基因,称为edmS(以前为pgsE)。使用分子遗传学技术鉴定功能基因区域。我们发现EdmS是一种膜相关蛋白,对EDM至关重要。我们还确定,EdmS可以将复制子不稳定且分离度差于随机的质粒载体转变为分离度好于随机化的质粒载体,表明该蛋白在附加体的去簇和/或分配中起作用。 EdmS具有两个不同的域:一个N端膜锚定域和一个C端组装加速器样结构,对edmS的突变分析表明,这两个域对于EDM都是必不可少的。使用巨大芽孢杆菌及其细胞的进一步研究。 edmS(以前称为capE)基因暗示EdmS有潜力作为探索新型EDM系统的分子探针。

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