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. 2003 Oct;185(20):5993–6004. doi: 10.1128/JB.185.20.5993-6004.2003

FIG. 2.

FIG. 2.

Transcription activation by FF(−n)FF(−41.5) and CC(−n)CC(−41.5) promoters. (a) The anaerobic β-galactosidase activities of M182 (Δlac) cells transformed with each of the FF(−n)FF(−41.5) promoters cloned in pRW50, displayed as a percentage of the activity achieved using the FF(−41.5) promoter. The relative activities are the means of three independent determinations, and error bars depict one standard deviation from the mean. The x axis indicates the location of the center of the upstream 22-bp FF binding site. (b) For comparison, the activities of M182 cells transformed with the CC(−n)CC(−41.5) promoter series reported by Belyaeva et al. (3) are also shown, relative to the activity achieved using the CC(−41.5) promoter. The x axis indicates the location of the center of the upstream 22-bp CC binding site.