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Shigella sonnei is responsible for the majority of shigellosis infections in the United States with over 500,000 cases reported annually. Here we present the complete genome of the clinical multidrug resistant (MDR) strain 866, which is highly susceptible to bacteriophage infections. The strain has a circular chromosome of 4.85 Mb and carries a 113 kb MDR plasmid. This IncB/O/K/Z-type plasmid, termed p866, confers resistance to five different classes of antibiotics including ß-lactamase, sulphonamide, tetracycline, aminoglycoside, and trimethoprim. Comparative analysis of the plasmid architecture and gene inventory revealed that p866 shares its plasmid backbone with previously described IncB/O/K/Z -type Shigella spp. and E. coli plasmids, but is differentiated by the insertion of antibiotic resistance (AR) cassettes, which we found associated with mobile genetic elements such as Tn3, Tn7, and Tn10. A whole genome-derived phylogenetic reconstruction showed the evolutionary relationships of S. sonnei strain 866 and the four established Shigella species, highlighting the clonal nature of S. sonnei.
This article was published in the following journal.
Name: Genome biology and evolution
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A coordinated effort of researchers to map (CHROMOSOME MAPPING) and sequence (SEQUENCE ANALYSIS, DNA) the human GENOME.
An analysis comparing the allele frequencies of all available (or a whole GENOME representative set of) polymorphic markers in unrelated patients with a specific symptom or disease condition, and those of healthy controls to identify markers associated with a specific disease or condition.
A sequence-related subfamily of ATP-BINDING CASSETTE TRANSPORTERS that actively transport organic substrates. Although considered organic anion transporters, a subset of proteins in this family have also been shown to convey drug resistance to neutral organic drugs. Their cellular function may have clinical significance for CHEMOTHERAPY in that they transport a variety of ANTINEOPLASTIC AGENTS. Overexpression of proteins in this class by NEOPLASMS is considered a possible mechanism in the development of multidrug resistance (DRUG RESISTANCE, MULTIPLE). Although similar in function to P-GLYCOPROTEINS, the proteins in this class share little sequence homology to the p-glycoprotein family of proteins.
Strains of the genus Enterococcus that are resistant to the antibiotic VANCOMYCIN. The enterococci become resistant by acquiring plasmids carrying genes for VANCOMYCIN RESISTANCE.
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MRSA (methicillin-resistant Staphylococcus aureus)
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