Skip to main content
. Author manuscript; available in PMC: 2010 Oct 1.
Published in final edited form as: FEMS Immunol Med Microbiol. 2009 Jul 1;57(1):69–79. doi: 10.1111/j.1574-695X.2009.00580.x

Figure 2.

Figure 2

In vitro regulation of promoters. Strains were grown in LB to mid-log phase and then resuspended in permissive or non-permissive medium. A and B) show the relief of repression of the argC promoter by the removal of exogenous arginine in the 5- (A) or 60-copy (B) plasmids. C) shows repression of the fhuC promoter by the addition of FeSO4. Each value is the mean of triplicate cultures, error bars show standard deviation. Each graph is representative of at least three experiments.