Description and evolution of a nimB gene-coding, composite mobilizable transposon, MTnBf8, of Bacteroides fragilis
Background In Bacteroides strains, metronidazole resistance is encoded mainly by the so-called nim genes, which are usually carried on plasmids; however, chromosomal presence is also known (e.g., nimB). Usually, the nim genes are activated by insertion sequence (IS) elements, conferring resistance. Molecular epidemiolo...