Table 2 Effects of metal ions and chemical reagents on esterase activity
Substances | Concentration (mM) | Residual activity (% ± SD) |
|---|---|---|
Control | - | 100 |
Ca2+ | 5 | 138.9 ± 1.6 |
Zn2+ | 5 | 97.6 ± 0.8 |
Fe2+ | 5 | 92.7 ± 1.7 |
Fe3+ | 5 | 91.8 ± 0.9 |
Cu2+ | 5 | 80.8 ± 1.8 |
Mn2+ | 5 | 97.5 ± 1.6 |
Hg2+ | 5 | 18.4 ± 0.4 |
Mg2+ | 5 | 97.7 ± 1.3 |
EDTA | 1 | 8.9 ± 0.2 |
PMSF | 1 | 11.1 ± 0.2 |
DEPC | 1 | 92.1 ± 1.1 |
PAO | 1 | 8.4 ± 0.3 |
β-mercaptoethanol | 1 | 91.3 ± 1.5 |