FIG. 5.

IbrAB homology in the ECOR strains. BamHI digests were fractionated by agarose gel electrophoresis and were transferred for Southern analysis as indicated in Materials and Methods. The probe used was a 1.1-kb segment from the ibrAB locus (Fig. 1A). ECOR strain numbers are shown above each lane. The phylogenetic group (20) of each strain is shown above its number. Kilodaltons are given on the left.