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STEADY-STATE β-GALACTOSIDASE ACTIVITY IN STRAINS CARRYING A LOW-COPY ACTI-lacZ GENE (pSB20)
| Strain | Experiment | |||
|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |
| DC35-15D (wild-type) | 0.6 ± 0.1 | 0.8 ± 0.01 | 0.7 ± 0.05 | 0.3 ± 0.03 |
| RR9 (Δfir1) | 2.9 ± 0.4 | 1.8 ± 0.3 | 1.2 ± 0.1 | 0.66 ± 0.05 |
| (4.8 ×) | (2.25 ×) | (1.8 ×) | (2.2 ×) | |
| RR4 (Δref2) | 5.0 ± 0.5 | 3.6 ± 0.3 | 2.5 ± 0.5w | 1.8 ± 0.4 |
| (8.3 ×) | (4.5 ×) | (3.8 ×) | (6.0 ×) | |
