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Model illustrating regulation of the bgl promoter and regulatory interactions of the transcriptional regulators LeuO and BglJ-RcsB (for details, see Discussion). Pointed arrowheads indicate activation, and blunt arrowheads indicate repression. Promoters (P) are indicated by pointed flags. In addition to being controlled by H-NS, StpA, LeuO, and BglJ-RcsB, the bgl promoter is CRP dependent and is repressed by FIS (4, 48, 52).
