Figure 6.

Activator-mediated RNAP binding to weak promoter. Absence (–) or presence (+) of C protein (C) or rifampicin (Rif) are indicated. C footprint is shown as an open rectangle in the sequence of the mom regulatory region below the figure. The –10 and –35 hexamers are underlined and overlined, respectively. The transcription start site is indicated with an arrow. The bracket indicates the extended footprint obtained due to binding of both C protein and RNAP. G, A, T and C are sequencing lanes.