Substrate | Specific activity (μmoles min−1 (mg protein)−1) | |
---|---|---|
Crude extract | 50 to 80% NH4(SO4)2 fraction | |
β-ONP-galactose | 1.11 + 0.07 | 2.27 + 0.03 |
(o-nitrophenyl-β-d-galactopyranoside) | ||
(2-nitrophenyl-β-d-galactopyranoside) | ||
β-PNP-galactose | 0.71 + 0.02 | 1.30 + 0.04 |
(p-nitrophenyl-β-d-galactopyranoside) | ||
(4-nitrophenyl-β-d-galactopyranoside) | ||
α-ONP-galactose | 2.85 + 0.21 | 4.55 + 0.10 |
(o-nitrophenyl-α-d-galactopyranoside) | ||
(2-nitrophenyl-α-d-galactopyranoside) | ||
α-PNP-galactose | 1.54 + 0.01 | 2.78 + 0.04 |
(p-nitrophenyl-α-d-galactopyranoside) | ||
(4-nitrophenyl-α-d-galactopyranoside) | ||
β-PNP-glucose | 0.026 + 0 | 0.049 + 0.008 |
(p-nitrophenyl-β-d-glucopyranoside) | ||
(4-nitrophenyl-β-d-glucopyranoside) | ||
α-ONP-glucose | 0.015 + 0.001 | 0.029 + 0.001 |
(o-nitrophenyl-α-d-glucopyranoside) | ||
(2-nitrophenyl-α-d-glucopyranoside) | ||
α-PNP-arabinose | 0.160 + 0.003 | 0.285 + 0.001 |
(p-nitrophenyl-α-l-arabinopyranoside) | ||
(4-nitrophenyl-α-l-arabinopyranoside) |