EC Number   |
Metals/Ions |
Reference |
|---|
   2.7.1.3 | Mg2+ |
- |
641283, 641284, 641285 |
| 2.7.1.3 | Mg2+ |
absolute requirement for both monovalent and divalent cations, for optimal activity the concentration of Mg2+ must equal or exceed the concentration of ATP |
641277 |
| 2.7.1.3 | Mg2+ |
inactive in absence of Mg2+ or Mn2+ |
641276 |
| 2.7.1.3 | Mg2+ |
most active at a Mg2+ concentration of 1 mM. Mg2+ can not be replaced by Mn2+. ATP/Mg2+ in the ratio of 1:2 forms the actual substrate for ketohexokinase activity |
727726 |
| 2.7.1.3 | Mn2+ |
inactive in absence of Mg2+ or Mn2+ |
641276 |
| 2.7.1.3 | Na+ |
absolute requirement for both monovalent and divalent cations, when Mg2+ fills the requirement for divalent cation, K+ and Rb+ are the most active monovalent cations, NH4+, Na+, Cs+ and Li+ are decreasingly active |
641277 |
| 2.7.1.3 | Na+ |
activates |
641279 |
| 2.7.1.3 | NaCl |
stimulates, yields 50% of the activity observed in equimolar KCl |
727726 |
| 2.7.1.3 | NH4+ |
absolute requirement for both monovalent and divalent cations, when Mg2+ fills the requirement for divalent cation, K+ and Rb+ are the most active monovalent cations, NH4+, Na+, Cs+ and Li+ are decreasingly active |
641277 |
| 2.7.1.3 | NH4+ |
activates |
641279 |
