NorA is a Staphylococcus aureus multidrug transporter that exports structurally distinct compounds including fluoroquinolones. In this study norA-like genes of Staphylococcus epidermidis (norASEP) and Staphylococcus haemolyticus (norASHAE) were identified and sequenced. The nucleotide identity of norASEP and norASHAE with norA was 75.3 and 74.1%, respectively, and the amino acid identity 87.7 and 86%, respectively. Inactivation of norASEP increased the ciprofloxacin susceptibility of E. coli DH5α carrying the pB SK 198 norASEP EZ cat norASEP plasmid.
Intrinsic role of coagulase negative staphylococci norA-like efflux system in fluoroquinolones resistance
Marco, Ligozzi;Liliana, Galia;Anna, Bertoncelli;Annarita, Mazzariol
2017-01-01
Abstract
NorA is a Staphylococcus aureus multidrug transporter that exports structurally distinct compounds including fluoroquinolones. In this study norA-like genes of Staphylococcus epidermidis (norASEP) and Staphylococcus haemolyticus (norASHAE) were identified and sequenced. The nucleotide identity of norASEP and norASHAE with norA was 75.3 and 74.1%, respectively, and the amino acid identity 87.7 and 86%, respectively. Inactivation of norASEP increased the ciprofloxacin susceptibility of E. coli DH5α carrying the pB SK 198 norASEP EZ cat norASEP plasmid.
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