Table 1 Kinetic parameters of Bxy_22780
Vmax (U/mg) | Km (mM) | Vmax/Km (U/mg/mM) | |
|---|---|---|---|
Wild type | |||
pNP-Gal | 21.2 ± 1.4 | 3.49 ± 0.53 | 6.08 ± 0.58 |
pNP-d-Fuc | 14.0 ± 0.45 | 7.95 ± 0.46 | 1.76 ± 0.05 |
β-1,2-Gal2 | 14.6 ± 0.3 | 1.40 ± 0.05 | 10.4 ± 0.3 |
β-1,2-Gal3 | 24.1 ± 0.9 | 1.65 ± 0.14 | 14.6 ± 0.8 |
W288A mutant | |||
β-1,2-Gal2 | 1.18 ± 0.05 | 3.22 ± 0.25 | 0.367 ± 0.015 |
β-1,2-Gal3 | 2.08 ± 0.49 | 54.9 ± 13.7 | 0.0378 ± 0.0007 |