TABLE 4.
Levels of LacZ expression of oxyR::Ω(Spec) and dam-13::Tn9 oxyR::Ω(Spec) isolates containing an agn′-lacZ fusion with point mutations in the GATC sequences
| Strain | agn′-lacZ mutation(s) | Specific host strain mutation(s) | Mean ± SD β-galactosidase activity (MU) | Ratio of dam oxyR to oxyR |
|---|---|---|---|---|
| MV369 | GATC-I, -II, -III | oxyR | 298 ± 26 | 0.98 |
| MV391 | GATC-I, -II, -III | dam oxyR | 291 ± 22 | |
| MV343 | GATC-I | oxyR | 1311 ± 60 | 0.23 |
| MV354 | GATC-I | dam oxyR | 308 ± 34 | |
| MV316 | GATC-II | oxyR | 605 ± 27 | 0.21 |
| MV351 | GATC-II | dam oxyR | 125 ± 5 | |
| MV308 | GATC-III | oxyR | 1210 ± 13 | 0.21 |
| MV350 | GATC-III | dam oxyR | 258 ± 14 | |
| MV201 | Wild type | oxyR | 1027 ± 102 | 0.08 |
| MV230 | Wild type | dam oxyR | 81 ± 1 |