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Region between φKO2 genes 22 and 23. The sequences of both strands of the region between genes 22 and 23 are shown, with a gray background marking the LexA-binding site, whose universally conserved base pairs are underlined. The −10 and −35 regions of putative promoters P22 and P23 are indicated by black and white rectangles, respectively, and arrows indicate the predicted mRNA start sites.
