FIGURE 5.

Gene structure of the novel Tn7-Tn3 transposable element. (A) Schematic representation of the integron discovered in this study formed by the fused Tn7 and Tn3 transposons found in the American STs 79 and 113. The dashed boxes correspond to the integron flanking genes. (B) Schematic representations of the previously described Tn7 transposons (Ramirez et al., 2005) related to the one reported here. Such integrons carry four resistance genes highlighted in light blue, orange, red, and yellow. Genes responsible for the transposition/recombination process are in green. Black arrows denote the attl2 cassette integration site.