EC Number   |
Metals/Ions |
Reference |
|---|
   3.2.2.21 | Ca2+ |
2 mM CaCl2, enzyme activity 103% |
646888 |
| 3.2.2.21 | Cd2+ |
inhibitory above 0.05 mM. Reduced catalytic activity in presence of Zn2+ is not due to altered binding of substrate |
682910 |
| 3.2.2.21 | K+ |
optimal activity at pH 7.5 and 100 mM KCl |
701054 |
| 3.2.2.21 | Mg2+ |
- |
646888 |
| 3.2.2.21 | Mg2+ |
2 mM MgSO4, enzyme activity 112% |
646888 |
| 3.2.2.21 | Mg2+ |
at low concentration, Mg2+ stimulates enzyme activity with substrate hypoxanthine, but not with ethenoadenine. At high concentrations, inhibitory |
680691 |
| 3.2.2.21 | Mg2+ |
no obligatory requirement, but addition of 1.5 mM MgCl2 causes stimulation in the catalytic activity 2fold |
646851 |
| 3.2.2.21 | Mg2+ |
stimulated by 1 mM |
646847 |
| 3.2.2.21 | Mg2+ |
stimulated by 1.5 mM MgCl2 |
646851 |
| 3.2.2.21 | Mn2+ |
2 mM MnCl2, enzyme activity 102% |
646888 |
