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Linkage of a novel mercury resistance operon with streptomycin resistance on a conjugative plasmid in Enterococcus faecium

Davis, IJ; Roberts, AP; Ready, D; Richards, H; Wilson, M; Mullany, P; (2005) Linkage of a novel mercury resistance operon with streptomycin resistance on a conjugative plasmid in Enterococcus faecium. PLASMID , 54 (1) 26 - 38. 10.1016/j.plasmid.2004.10.004.

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Abstract

It has been shown that the mercury in dental amalgam and other environmental sources can select for mercury resistant bacteria and that this can lead to an increase in resistance to antibiotics. To understand more about this linkage we have investigated the genetic basis for mercury and antibiotic resistance in a variety of oral bacteria. In this study we have cloned and sequenced the mer operon from an Enterococcus faecium strain which was resistant to mercury, tetracycline, and streptomycin. This strain was isolated, in a previous investigation, from a cynomolgus monkey post-installation of amalgam fillings. The mer operon was contained within a putative transposon (Tnmer1) of the ISL3 family. This element was located on a streptomycin resistant plasmid, pPPM1000, which shares homology with pRE25. (c) 2004 Elsevier Inc. All rights reserved.

Type:Article
Title:Linkage of a novel mercury resistance operon with streptomycin resistance on a conjugative plasmid in Enterococcus faecium
DOI:10.1016/j.plasmid.2004.10.004
Keywords:mercury resistance, Enterococcus faecium, pRE25, ISL3, DENTAL AMALGAM FILLINGS, GRAM-POSITIVE BACTERIA, CLASS-II TRANSPOSON, ANTIBIOTIC-RESISTANCE, STREPTOCOCCUS-FAECALIS, STAPHYLOCOCCUS-AUREUS, NATURAL ENVIRONMENTS, NUCLEOTIDE-SEQUENCE, BACILLUS-SUBTILIS, ORAL BACTERIA
UCL classification:UCL > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > School of Life and Medical Sciences > Faculty of Medical Sciences > Eastman Dental Institute > Microbial Diseases

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