Inhibitors | Comment | Organism | Structure |
---|---|---|---|
D-fructose | isoenzyme FK-I: substrate inhibition at 4-8 mM, FK-II: substrate inhibition above 1 mM, FK-III: no substrate inhibition | Solanum tuberosum | |
MgADP- | - |
Solanum tuberosum |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.041 | - |
D-fructose | isoenzyme FK-I, 25°C, pH 8.5 | Solanum tuberosum | |
0.062 | - |
ATP | isoenzyme FK-I, 25°C, pH 8.5 | Solanum tuberosum | |
0.087 | - |
ATP | isoenzyme FK-II, 25°C, pH 8.5 | Solanum tuberosum | |
0.116 | - |
D-fructose | isoenzyme FK-II, 25°C, pH 8.5 | Solanum tuberosum | |
0.128 | - |
D-fructose | isoenzyme FK-III, 25°C, pH 8.5 | Solanum tuberosum | |
0.132 | - |
GTP | isoenzyme FK-I, 25°C, pH 8.5 | Solanum tuberosum | |
0.156 | - |
CTP | isoenzyme FK-I, 25°C, pH 8.5 | Solanum tuberosum | |
0.158 | - |
CTP | isoenzyme FK-III, 25°C, pH 8.5 | Solanum tuberosum | |
0.172 | - |
GTP | isoenzyme FK-III, 25°C, pH 8.5 | Solanum tuberosum | |
0.228 | - |
UTP | isoenzyme FK-III, 25°C, pH 8.5 | Solanum tuberosum | |
0.243 | - |
UTP | isoenzyme FK-I, 25°C, pH 8.5 | Solanum tuberosum | |
0.251 | - |
GTP | isoenzyme FK-II, 25°C, pH 8.5 | Solanum tuberosum | |
0.268 | - |
CTP | isoenzyme FK-II, 25°C, pH 8.5 | Solanum tuberosum | |
0.279 | - |
ATP | isoenzyme FK-III, 25°C, pH 8.5 | Solanum tuberosum | |
0.321 | - |
UTP | isoenzyme FK-II, 25°C, pH 8.5 | Solanum tuberosum |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Cs+ | no activation | Solanum tuberosum | |
K+ | strong activation of isozyme FK-III, lower activation of FK-I and FK-II | Solanum tuberosum | |
Li+ | weak activation of FK-I, no activation of FK-II and FK-III | Solanum tuberosum |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
36000 | - |
2 * 36000, SDS-PAGE | Solanum tuberosum |
70000 | - |
gel filtration | Solanum tuberosum |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + D-fructose | Solanum tuberosum | - |
ADP + D-fructose 6-phosphate | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Solanum tuberosum | - |
- |
- |
Purification (Comment) | Organism |
---|---|
3 forms: FK-I, FK-II and FK-III | Solanum tuberosum |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
tuber | - |
Solanum tuberosum | - |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
12.7 | - |
- |
Solanum tuberosum |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + D-fructose | - |
Solanum tuberosum | ADP + D-fructose 6-phosphate | - |
? | |
ATP + D-fructose | best phosphate donor for isozymes FK-II and FK-III | Solanum tuberosum | ADP + D-fructose 6-phosphate | - |
? | |
ATP + D-glucose | isoenzyme FK-I and FK-II less than 5% of the activity with fructose | Solanum tuberosum | ADP + D-glucose 6-phosphate | - |
? | |
ATP + D-glucose | FK-III no activity | Solanum tuberosum | ADP + D-glucose 6-phosphate | - |
? | |
ATP + D-mannose | isoenzyme FK-I and FK-II low activity, less than 5% of D-fructose, FK-III no activity | Solanum tuberosum | ADP + D-mannose 6-phosphate | - |
? | |
CTP + D-fructose | - |
Solanum tuberosum | CDP + D-fructose 6-phosphate | - |
? | |
GTP + D-fructose | best phosphate donor for isozyme FK-I | Solanum tuberosum | GDP + D-fructose 6-phosphate | - |
? | |
UTP + D-fructose | - |
Solanum tuberosum | UDP + D-fructose 6-phosphate | - |
? |
Subunits | Comment | Organism |
---|---|---|
dimer | 2 * 36000, SDS-PAGE | Solanum tuberosum |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
25 | - |
assay at | Solanum tuberosum |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
8.5 | - |
- |
Solanum tuberosum |
Organism | Comment | pI Value Maximum | pI Value |
---|---|---|---|
Solanum tuberosum | three polypeptides, one-dimensional isoelectric focusing | - |
4.8 |