TABLE 5.
Effect of an ompR mutation on fimB and fimE expression compared to expression in a wild-type strain
| Strain | Plasmid | pH | Added NaCl concn (mM) | β-Galactosidase activity (Miller units) |
|---|---|---|---|---|
| MC4100 | pJB5A (fimB-lacZ) | 5.5 | 0 | 119 ± 22 |
| MC4100 | pJB5A | 5.5 | 400 | 103 ± 6 |
| MC4100 | pJB5A | 7.0 | 0 | 208 ± 36 |
| MC4100 | pJB5A | 7.0 | 400 | 163 ± 30 |
| MH1160 (ompR) | pJB5A | 5.5 | 0 | 151 ± 12 |
| MH1160 | pJB5A | 5.5 | 400 | 312 ± 50 |
| MH1160 | pJB5A | 7.0 | 0 | 283 ± 53 |
| MH1160 | pJB5A | 7.0 | 400 | 252 ± 64 |
| MC4100 | pJLE4-3 (fimE-lacZ) | 5.5 | 0 | 101 ± 23 |
| MC4100 | pJLE4-3 | 5.5 | 400 | 158 ± 21 |
| MC4100 | pJLE4-3 | 7.0 | 0 | 148 ± 21 |
| MC4100 | pJLE4-3 | 7.0 | 400 | 195 ± 42 |
| MH1160 (ompR) | pJLE4-3 | 5.5 | 0 | 126 ± 18 |
| MH1160 | pJLE4-3 | 5.5 | 400 | 124 ± 30 |
| MH1160 | pJLE4-3 | 7.0 | 0 | 212 ± 30 |
| MH1160 | pJLE4-3 | 7.0 | 400 | 213 ± 57 |