TABLE 4.
β-Galactosidase activities in a wild-type E. coli strain carring a deletion fusion construct series or FNR binding site mutations
| Plasmid | β-Galactosidase activity (Miller units)a
|
|
|---|---|---|
| Without O2 | With O2 | |
| pHYDR1 | 41.2 ± 9.1 | 3.4 ± 0.9 |
| pHYDR2 | 32.9 ± 8.4 | 2.5 ± 0.3 |
| pHYDR3 | 40.1 ± 7.9 | 2.9 ± 0.8 |
| pHYDR4 | 38.5 ± 4.6 | 4.1 ± 0.6 |
| pHYDR9 | 45.3 ± 9.1 | 4.5 ± 0.4 |
| pHYDR5 | 1.9 ± 0.9 | 1.5 ± 0.2 |
| pHYDR6 | 0.9 ± 0.5 | 0.9 ± 0.4 |
| pHYDR7 | 1.1 ± 0.5 | 1.1 ± 0.3 |
| pHYDR8 | 0.5 ± 0.4 | 0.6 ± 0.4 |
| pHYDR18 (FNR site I mutant) | 12.2 ± 4.4 | 2.5 ± 0.9 |
| pHYDR17 (FNR site II mutant) | 26.1 ± 4.7 | 2.1 ± 0.3 |
a
The values are means ± standard deviations.