Characterization of a mobilizable IncQ plasmid encoding cephalosporinase CMY-4 in Escherichia coli.

The CMY-type enzymes are the most frequent acquired class C β-lactamases ([1][1]). Spread of the respective genes is mediated mostly by IncI and IncA/C plasmids ([2][2][–][3][4][4]). bla CMY-carrying ColE1 replicons have also been reported ([5][5]). Here, we describe a CMY-4-encoding IncQ plasmid