KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.00001 | - |
diphosphate | at pH 9.1 and 25°C | Escherichia coli | |
0.91 | - |
Triphosphate | at pH 9.1 and 25°C | Escherichia coli |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Mg2+ | dependent on | Escherichia coli |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
20000 | - |
x * 20000, calculated from amino acid sequence | Escherichia coli |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
diphosphate + H2O | Escherichia coli | - |
2 phosphate | - |
? | |
diphosphate + H2O | Escherichia coli MG1655 | - |
2 phosphate | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Escherichia coli | - |
- |
- |
Escherichia coli MG1655 | - |
- |
- |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
0.0002 | - |
with triphosphate as substrate, at pH 9.1 and 37°C | Escherichia coli |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
diphosphate + H2O | - |
Escherichia coli | 2 phosphate | - |
? | |
diphosphate + H2O | - |
Escherichia coli MG1655 | 2 phosphate | - |
? | |
triphosphate + H2O | the enzyme is less efficient for the hydrolysis of triphosphate than for diphosphate but is the main enzyme responsible for triphosphate hydrolysis in vivo | Escherichia coli | ? | - |
? | |
triphosphate + H2O | the enzyme is less efficient for the hydrolysis of triphosphate than for diphosphate but is the main enzyme responsible for triphosphate hydrolysis in vivo | Escherichia coli MG1655 | ? | - |
? |
Subunits | Comment | Organism |
---|---|---|
? | x * 20000, calculated from amino acid sequence | Escherichia coli |
Synonyms | Comment | Organism |
---|---|---|
inorganic pyrophosphatase | - |
Escherichia coli |
PPase | - |
Escherichia coli |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
80 | - |
the enzyme activity is remarkably heat-stable (up to 80°C) | Escherichia coli |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
16.7 | - |
Triphosphate | at pH 9.1 and 25°C | Escherichia coli | |
42 | - |
diphosphate | at pH 9.1 and 25°C | Escherichia coli |