Simultaneous Presence of Insertion Sequence Excision Enhancer and Insertion Sequence IS629 Correlates with Increased Diversity and Virulence in Shiga Toxin-Producing Escherichia coli.

Abstract excerpt

Although new serotypes of enterohemorrhagic Escherichia coli (EHEC) emerge constantly, the mechanisms by which these new pathogens arise and the reasons emerging serotypes tend to carry more virulence genes than other E. coli are not understood. An insertion sequence (IS) excision enhancer (IEE) was discovered in EHEC O157:H7 that promoted the excision of IS3 family members and generating various genomic...

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