TABLE 4.
Specific activities of AmpC in P. aeruginosa strains with indicated concentrations of inducer
| Strain | β-Lactamase activitya |
|||
|---|---|---|---|---|
| No inducer | Inducer (1 μg/ml) | Inducer (10 μg/ml) | Inducer (25 μg/ml) | |
| PAO1 | 4 ± 0.5 | 36 ± 10 | 165 ± 29 | 372 ± 66 |
| PAK | 6 ± 0.3 | 152 ± 12 | 747 ± 65 | 1,068 ± 83 |
| PAO1ΔDDh1Dh2 | 3,380 ± 462 | 2,981 ± 382 | 3,007 ± 415 | 3,022 ± 394 |
| PAO1ΔG | 3 ± 0.3 | 3 ± 1.1 | 10 ± 1.3 | 0 |
| PAKΔG | 2 ± 0.2 | 2 ± 0.3 | 5 ± 0.8 | 0 |
| PAO1ΔDDh1Dh2G | 3 ± 0.1 | 4 ± 1 | 8 ± 0.6 | 0 |
a
Nanomoles of nitrocefin hydrolyzed per minute per milligram of protein. The inducer used was cefoxitin.