Table 2.

Rates of change in lacS expression during induction and repression

ConditionLevel (r2)
β-Glycosidase activity (μmol of PNP/mg/h)β-Glycosidase protein (μg/mg of total protein/h)lacS mRNA (pg/mg/h)
Induction (down shift)130 (0.89)0.23 (0.89)0.29 (0.92)
Repression (up shift)3 (0.96)NDa 0.0034 (0.87)
  • a ND, not determined.