Characterization of the plasmid-borne quinolone resistance gene qnrB19 in Salmonella enterica serovar Typhimurium

Antimicrob Agents Chemother. 2009 Sep;53(9):4019-21. doi: 10.1128/AAC.00294-09. Epub 2009 Jun 15.

Abstract

A qnrB19 gene variant, carried by an IncL/M-like plasmid, was detected in a multidrug Salmonella enterica serovar Typhimurium human strain with reduced susceptibility to ciprofloxacin. The genetic environment around the gene was fully sequenced (20 kb). A large gene cluster, containing the aph, qnrB19, and blaSHV-12-like resistance genes, is inserted inside a Tn3 transposon.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / pharmacology*
  • Bacterial Proteins / genetics
  • Bacterial Proteins / physiology
  • DNA Transposable Elements / genetics
  • Drug Resistance, Multiple, Bacterial / genetics*
  • Evolution, Molecular
  • Microbial Sensitivity Tests
  • Multigene Family / genetics
  • Plasmids / genetics*
  • Quinolones / pharmacology*
  • Salmonella typhimurium / drug effects*
  • Salmonella typhimurium / genetics*

Substances

  • Anti-Bacterial Agents
  • Bacterial Proteins
  • DNA Transposable Elements
  • Quinolones