Southern blot analyses of Delftia strains and cloned DNA using an intI3-specific probe. Lanes 1, 2, 5, and 6, uncut genomic DNA of D. acidovorans C17, D. tsuruhatensis A90, D. acidovorans NBRC14950T, and D. tsuruhatensis NBRC16741T, respectively. Lanes 3, 4, 7, and 8, HindIII-digested DNA of C17, A90, and cosmids CC17-15 and CA90-6, respectively. The hybridizing fragment in CA90-6 is 5.2 kb, larger than that in A90 genomic DNA (3.1 kb), because the latter is interrupted by cloning. A GeneRuler 1-kb ladder (Fermentas) in lanes m is used as a marker. Single arrowhead, 2.5 kb; double arrowhead; 5 kb.