S-Fimbria-Encoding Determinant sfa I Is Located on Pathogenicity Island III 536 of Uropathogenic Escherichia coli Strain 536

Author:

Dobrindt Ulrich1,Blum-Oehler Gabriele1,Hartsch Thomas2,Gottschalk Gerhard2,Ron Eliora Z.3,Fünfstück Reinhard4,Hacker Jörg1

Affiliation:

1. Institut für Molekulare Infektionsbiologie der Universität Würzburg, 97070 Würzburg,1

2. Institut für Mikrobiologie und Genetik, Labor für Genomanalysen der Universität Göttingen, 37077 Göttingen,2 and

3. Department of Molecular Microbiology and Biotechnology, Tel-Aviv University, Ramat Tel-Aviv, 69978 Tel Aviv, Israel3

4. Klinik für Innere Medizin IV, Klinikum der Universität Jena, 07740 Jena,4 Germany, and

Abstract

ABSTRACT The sfa I determinant encoding the S-fimbrial adhesin of uropathogenic Escherichia coli strains was found to be located on a pathogenicity island of uropathogenic E. coli strain 536. This pathogenicity island, designated PAI III 536 , is located at 5.6 min of the E. 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 III 536 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 III 536 . The presence of known PAI III 536 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 an E. coli K-12-specific genomic island.

Publisher

American Society for Microbiology

Subject

Infectious Diseases,Immunology,Microbiology,Parasitology

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