Table 1 Steady state kinetic parameters of wild type ADS and selected variants with FPP as the substrate.
Enzyme | kcat (s−1) | Km (μM) | kcat/Km (s−1.M−1) |
|---|---|---|---|
ADSWT | 0.20 ± 0.007 | 5.47 ± 0.558 | 3.6 × 104 |
ADSH448A | 0.68 ± 0.03 | 5.04 ± 0.753 | 13.5 × 104 |
ADST399S | 0.39 ± 0.06 | 5.89 ± 1.278 | 6.6 × 104 |
ADST399S/H448A | 1.00 ± 0.14 | 8.50 ± 1.605 | 11.8 × 104 |