TABLE 2.
Whole cell propene, benzene, and toluene monooxygenase activities, and phenol hydroxylase and propene oxide degradation activities, of Xanthobacter strain Py2 and the Amo− mutants NZ1 and NZ2a
| Strain | Activityb on:
|
||||
|---|---|---|---|---|---|
| Benzene | Toluene | Phenol | Propene | Propene oxide | |
| Xanthobacter strain Py2 | 13.8 | 19.5 | 8.4 | 20.1 | 50.5 |
| NZ1 | 0 | 0 | 0 | 0 | 51.2 |
| NZ2 | 0 | 0 | 0 | 0 | 49.8 |
a
No activity was detected with any of the substrates with Xanthobacter strain Py2 cells grown with 0.5% (wt/vol) fructose as the sole carbon source.
b
Activities, in nanomoles per minute per milligram of protein, refer to the rate of product formation, except for the activities on phenol and propene oxide, which were measured as rates of substrate disappearance.