Figure 2From: Effect on β-galactosidase synthesis and burden on growth of osmotic stress in Escherichia coliBurden due to unnecessary gene expression (ф U ): a. ф U at various NaCl concentrations. b. фU as a fraction of β-galactosidase activity. Note β-galactosidase activity (β) is normalized with the maximum enzyme synthesized in absence of salt under saturating IPTG concentrations.Back to article page