General Stability | Organism |
---|---|
phosphoenolpyruvate stabilizes | Escherichia coli |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
phosphate | non-competitive with respect to both phosphoenolpyruvate and D-erythrose 4-phosphate | Escherichia coli | |
Tyr | feedback inhibition; noncompetitive with respect to D-erythrose 4-phosphate, competitive with respect to phosphoenolpyruvate; Tyr-sensitive isozyme | Escherichia coli |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
additional information | - |
additional information | kinetics | Escherichia coli | |
0.0058 | - |
phosphoenolpyruvate | pH 7.0, 37°C | Escherichia coli | |
0.0965 | - |
D-erythrose 4-phosphate | pH 7.0, 37°C | Escherichia coli |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
39000 | - |
x * 39000, either a rapid monomer-dimer equilibrium or a very asymetric shape for the native enzyme, SDS-PAGE | Escherichia coli |
66000 | - |
gel filtration | Escherichia coli |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Escherichia coli | - |
tyrosine-sensitive isozyme | - |
Purification (Comment) | Organism |
---|---|
105fold | Escherichia coli |
Reaction | Comment | Organism | Reaction ID |
---|---|---|---|
phosphoenolpyruvate + D-erythrose 4-phosphate + H2O = 3-deoxy-D-arabino-hept-2-ulosonate 7-phosphate + phosphate | mechanism | Escherichia coli | |
phosphoenolpyruvate + D-erythrose 4-phosphate + H2O = 3-deoxy-D-arabino-hept-2-ulosonate 7-phosphate + phosphate | ordered ping-pong bi-bi mechanism | Escherichia coli |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
56 | - |
purified enzyme | Escherichia coli |
Storage Stability | Organism |
---|---|
-20°C, in phosphate buffer containing phosphoenolpyruvate, stable for several months | Escherichia coli |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
phosphoenolpyruvate + D-erythrose 4-phosphate + H2O | - |
Escherichia coli | 2-dehydro-3-deoxy-D-arabino-heptonate 7-phosphate + phosphate | - |
? |
Subunits | Comment | Organism |
---|---|---|
? | x * 39000, either a rapid monomer-dimer equilibrium or a very asymetric shape for the native enzyme, SDS-PAGE | Escherichia coli |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
37 | - |
assay at | Escherichia coli |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
25 | - |
2 h, in 3(N-morpholono)propane-sulfonic acid buffer, 50% loss of activity | Escherichia coli |
25 | - |
1 h, in 1,3-bis[tris(hydroxymethyl)methylamino]propane buffer, 10% loss of activity | Escherichia coli |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
122 | - |
phosphoenolpyruvate | pH 7.0, 37°C, MW 79000 assumed | Escherichia coli | |
122 | - |
D-erythrose 4-phosphate | pH 7.0, 37°C, MW 79000 assumed | Escherichia coli |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7 | - |
- |
Escherichia coli |
pH Minimum | pH Maximum | Comment | Organism |
---|---|---|---|
5.7 | 8.5 | pH 5.7: about 25% of maximal activity, pH 8.5: about 30% of maximal activity | Escherichia coli |