Table 3 The effect of metal ions and selected reagents on Paracoccus sp. 32d β-D-galactosidase activity
Ions/Reagents (10 mM) | Residual activity (%) |
|---|---|
None | 100 |
K+ | 106 |
Mg2+ | 97 |
Ca2+ | 70 |
Mn2+ | 75 |
Ni2+ | 61 |
Co2+ | 81 |
EDTA | 100 |
DTT | 93 |
Glutathione oxidised | 30 |
2-mercaptoethanol | 107 |
Urea | 98 |