FIG. 3.

(A) Location of the direct repeats flanking the genes involved in MccC51 production and immunity. The white box represents part of the DNA fragment from plasmid pC51 contained in plasmid pUM5 (Mcc⁺, Imm⁺). The white arrows indicate the direct repeats. The thin horizontal arrows indicate the direction of transcription. For abbreviations, see the legend to Fig. 2. (B) Comparison of the nucleotide sequences of the direct repeats. The upper repeated sequence is located upstream of the microcin operon promoter P _mcc, and the lower one is located downstream of mccE.