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DNase I footprinting assays of CcpA binding to the cid and lrg promoter regions. Solid boxes depict the regions protected from DNase I digestion upstream of cid (a) and lrg (b) by CcpA. The electropherograms represent control DNA with BSA (bovine serum albumin) in the upper panels and footprints with of CcpA in the lower panels.
