TABLE 2.
Reductive half-reaction of recombinant GOX with glycolate as a substrate between pH 5.0 and 10.0
Flavin reduction was carried out in a stopped-flow spectrophotometer at 30 °C. Pre-steady-state kinetic parameters were determined by fitting the data acquired upon mixing anaerobically the enzyme with glycolate to Equation 7.
| pH | k3 | Kd(app) |
|---|---|---|
| s−1 | mm | |
| 5.0 | 26.8 ± 0.2 | 0.66 ± 0.02 |
| 6.0 | 45.9 ± 0.3 | 0.41 ± 0.01 |
| 7.0 | 52.0 ± 0.4 | 0.32 ± 0.01 |
| 8.0 | 43.8 ± 0.2 | 0.39 ± 0.01 |
| 9.0 | 39.9 ± 0.2 | 1.64 ± 0.03 |
| 10.0 | 34.6 ± 0.5 | 9.35 ± 0.38 |