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The p R-p M regions of phage λ and Shiga toxin-converting phage 933W. Structural elements of each promoter are indicated, and o R1, o R2, and o R3 operator sequences are marked. The OxyR binding to the λp R-p M region (demonstrated experimentally [26]) is shown as a solid oval, and a putative (not verified experimentally) OxyR binding to the 933W p R-p M region is suggested by a dashed oval.
