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Results are means±S.D. for three determinations.
| Vmax (nmol/min per mg) | Km (μM) | Vmax/Km | |
|---|---|---|---|
| Sulfation of nitrotyrosine | |||
| pH 5.5 | 0.9±0.2 | 144.4±30.3 | 0.006 |
| pH 7.0 | 4.2±0.5 | 130.5±15.3 | 0.032 |
| pH 9.0 | 0.3±0.1 | 164.1±31.6 | 0.002 |
| Sulfation of dopamine | |||
| pH 7.0 | 52.7±4.1 | 6.5±0.7 | 8.11 |
| pH 9.0 | 130.6±8.7 | 38.1±2.6 | 3.43 |
| pH 11.0 | 101.3±18.5 | 31.6±12.0 | 3.21 |
