|
Cationsa
|
Residual activity (%)
|
|---|
|
Control
|
100
|
|
Mg2+
|
102/99
|
|
Zn2+
|
85/33
|
|
Mn2+
|
107/117
|
|
Ba2+
|
99/187
|
|
Ca2+
|
99/96
|
|
Al3+
|
87/NDc
|
|
Cu2+
|
4/2
|
|
Co2+
|
89/ND
|
|
Ni2+
|
100/63
|
|
Chemical reagentsb
| |
|
EDTA
|
103/114
|
|
Tween 60
|
105/ND
|
|
Tris
|
107/ND
|
|
SDS
|
98/ ND
|
- a Final concentration, the former value in the table was determined at 1 mM and the latter was determined at 10 mM. b Final concentration, the values in the table were determined at 1 mM (or 10 mM, the latter values), 0.05%, 0.05% and 0.1% for EDTA, Tween 60, Tris, and SDS, respectively. c ND: not determined. Values shown were the means of duplicate experiments, and the variations about the means were below 5%.
