A sixth gene cassette containing a dfrB-type gene, dfrB6, was found in a dfrB6-aadA1 cassette array in class 1 integrons. This array was isolated from several multiply antibiotic-resistant Salmonella enterica serovar Infantis strains that appear to be clonally related. The DfrB6 dihydrofolate reductase conferred resistance to trimethoprim.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1538648 | PMC |
| http://dx.doi.org/10.1128/AAC.00449-06 | DOI Listing |
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