Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9440141 | Research in Microbiology | 2005 | 6 Pages |
Abstract
We have characterized a natural isolate of Staphylococcus epidermidis resistant to heavy metals that carries a small 2391-bp plasmid, pSepCH, encoding the qacC gene. The S. epidermidis qacC gene confers resistance to a number of β-lactam antibiotics and to ethidium bromide in its natural host and in Escherichia coli K12 and Salmonella enterica sv. Typhimurium. This is the first communication of a small multidrug resistance (SMR) pump involved in resistance to β-lactam antibiotics. Experiments using tolC, ompW and ompD mutant strains of S. Typhimurium demonstrated that the β-lactam antibiotic resistance conferred by this pump does not depend on these outer membrane proteins.
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Authors
Derie E. Fuentes, Claudio A. Navarro, Juan C. Tantaleán, Manuel A. Araya, Claudia P. Saavedra, José M. Pérez, Iván L. Calderón, Phil A. Youderian, Guido C. Mora, Claudio C. Vásquez,