title: An Escherichia coli reference collection group B2- and uropathogen-associated polymorphism in the rpoS-mutS region of the E. coli chromosome.
abstract: Chromosomal DNAs of enterohemorrhagic, uropathogenic, and laboratory attenuated Escherichia coli strains differ in the rpoS-mutS region. Many uropathogens lack a deletion and an insertion characteristic of enterohemorrhagic strains. At the same chromosomal position, they harbor a 2.1-kb insertion of unknown origin with a base composition suggestive of horizontal gene transfer. Unlike virulence determinants associated with urinary tract infection and/or neonatal meningitis (pap or prs, sfa, kps, and hly), the 2.1-kb insertion is shared by all group B2 strains of the E. coli Reference Collection.
authors.affiliation: Department of Microbiology, University of Guelph, Guelph, ON N1G 2W1, Canada.
authors.forename: D E
authors.initials: DE
authors.lastname: Culham
authors.forename: J M
authors.initials: JM
authors.lastname: Wood
mesh_terms: D002875:Chromosomes / Q000235:genetics*; D004251:DNA Transposable Elements; D004926:Escherichia coli / Q000145:classification / Q000235:genetics*; D004927:Escherichia coli Infections / Q000382:microbiology*; D006801:Humans; D008969:Molecular Sequence Data; D016366:Open Reading Frames
chemical_list: D004251:DNA Transposable Elements