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Kinetic constants of the FOX-3 β-lactamase produced by EC1731
| Substrate | Relative Vmax (%) | Km (μM) | Vmax (μmol/min/μg of protein) |
|---|---|---|---|
| Cephaloridine | 100 | 363 | 1.11 |
| Cephalothin | 320 | 187 | 3.53 |
| Benzylpenicillin | 1.2 | 36 | 0.013 |
| Cefoxitin | <1 | <0.01 | |
| Cefotaxime | <1 | <0.01 | |
| Ceftazidime | <1 | <0.01 | |
| Aztreonam | <1 | <0.01 |
