Alignment of open reading frames in the three variant pDCA plasmids obtained from isolates EL1, EL4, and EL8. The color scheme is the same as in Fig. 2. Note that the functional categories assigned to each region of the plasmid are generalizations based on the function of the majority of genes in each region, but there are exceptions (e.g., dhlB2 is within the mobilization region). The locations of a few key features (repA, dhlB2, traA, dhlA, IS66) are shown to assist comparisons with Fig. 2.