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. 1997 Nov 25;94(24):12914–12919. doi: 10.1073/pnas.94.24.12914

Table 2.

Effect of CRP on the lac expression in the absence of inducer

lac promoter crp Strain β-Galactosidase activity
L8UV5 + PR166 55
− KK17 37
Wild-type + PR158 26
− KK15 6

Cells were grown at 37°C in Luria–Bertani medium to OD600 = 0.6. β-Galactosidase activity was determined and expressed in Miller units (17). Each value is the average of three experiments.