Studies of Pathogenecity Islands in Escherichia coli O157:H7

摘要

The pathogenicity islands (PAIs) have been defined for many strains of Pathogenic bacteria. Typically, these sequences are large (.30-kb) blocks of DNA inserted within or near tRNA genes, contain direct repeats and insertion sequences, have a GC content that differs from that of the rest of the genome, and encode defined virulence determinants. It is believed that the pathogenecity islands may be responsible for the emerging pathogenic bacterial species. The most common cause of urinary tract infection (UTI) uropathogenic strains of E.