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. 2016 Aug 22;60(9):5589-91.
doi: 10.1128/AAC.00935-16. Print 2016 Sep.

Full-Length Nucleotide Sequences of mcr-1-Harboring Plasmids Isolated from Extended-Spectrum-β-Lactamase-Producing Escherichia coli Isolates of Different Origins

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Full-Length Nucleotide Sequences of mcr-1-Harboring Plasmids Isolated from Extended-Spectrum-β-Lactamase-Producing Escherichia coli Isolates of Different Origins

Katrin Zurfluh et al. Antimicrob Agents Chemother. .

Abstract

Here, we present the full sequences of three mcr-1-carrying plasmids isolated from extended-spectrum-β-lactamase (ESBL)-producing Escherichia coli The plasmids belong to three different replicon types and are 34,640 bp, 209,401 bp, and 247,885 bp in size. We describe for the first time a composite transposon containing mcr-1 localized on a multidrug-resistant (MDR) IncHI2 plasmid harboring additional determinants of resistance to six different classes of antibiotics, including the ESBL gene blaCTX-M-1, and heavy metal resistance.

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Figures

FIG 1
FIG 1
Genetic structures surrounding the mcr-1 gene in plasmids of this study compared to those in plasmid pHNSHP45. The arrows indicate open reading frames (orf), with black, stippled, gray, and white arrows representing mcr-1, insertion (IS) elements, ORFs with known function, and ORFs with unknown function, respectively.

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