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S-Fimbria-Encoding Determinant sfa I Is Located on Pathogenicity Island III536 of UropathogenicEscherichia coli Strain 536

机译:编码S-菌落的决定因子sfa I位于致病性大肠杆菌菌株536的致病性岛III536上

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The sfa I determinant encoding the S-fimbrial adhesin of uropathogenic Escherichia colistrains was found to be located on a pathogenicity island of uropathogenic E. coli strain 536. This pathogenicity island, designated PAI III536, is located at 5.6 min of theE. coli chromosome and covers a region of at least 37 kb between the tRNA locus thrW and yagU. As far as it has been determined, PAI III536 also contains genes which code for components of a putative enterochelin siderophore system of E. coli and Salmonella spp. as well as for colicin V immunity. Several intact or nonfunctional mobility genes of bacteriophages and insertion sequence elements such as transposases and integrases are present on PAI III536. The presence of known PAI III536 sequences has been investigated in several wild-type E. coli isolates. The results demonstrate that the determinants of the members of the S-family of fimbrial adhesins may be located on a common pathogenicity island which, in E. coli strain 536, replaces a 40-kb DNA region which represents anE. coli K-12-specific genomic island.
机译:发现编码尿路致病性大肠杆菌菌株S纤维粘附素的 sfa I 决定簇位于尿路致病性的致病岛上E.大肠杆菌536菌株。该致病岛称为PAI III 536 ,位于E E的5.6分钟处。大肠埃希菌染色体,并在tRNA基因座 thrW yagU 之间至少覆盖了37 kb的区域。据确定,PAI III 536 还包含编码假定的Eem肠螯合铁载体系统组分的基因。大肠杆菌沙门氏菌 spp。以及针对大肠菌素V的免疫力。 PAI III 536 上存在几个完整的或非功能性的噬菌体迁移基因和转座酶和整合酶等插入序列元件。已经在几种野生型 E中研究了已知的PAI III 536 序列的存在。大肠杆菌分离株。结果表明,纤维黏附素S家族成员的决定因素可能位于 E中的共同致病岛上。大肠杆菌536菌株替换了代表 E的40 kb DNA区域。大肠杆菌K-12特异的基因岛。

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