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Literature summary extracted from
- Interactions among sites responsible for trehalose 6-phosphate and trehalose-activated glucose 6-phosphate hydrolysis on trehalose phosphatase isolated from Phormia regina (1971), J. Biol. Chem., 246, 4122-4130.
Activating Compound
| EC Number | Activating Compound | Comment | Organism | Structure |
|---|---|---|---|---|
| 3.1.3.12 | trehalose | activates hydrolysis of glucose 6-phosphate, no activation of trehalose 6-phosphate | Phormia regina |  |
Inhibitors
| EC Number | Inhibitors | Comment | Organism | Structure |
|---|---|---|---|---|
| 3.1.3.12 | glucose | competitive inhibition of hydrolysis of glucose 6-phosphate, ineffective against hydrolysis of trehalose 6-phosphate | Phormia regina | |
| 3.1.3.12 | phosphate | - |
Phormia regina | |
KM Value [mM]
| EC Number | KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|---|
| 3.1.3.12 | 0.25 | 0.5 | glucose 6-phosphate | - |
Phormia regina | |
| 3.1.3.12 | 0.4 | 0.7 | trehalose 6-phosphate | - |
Phormia regina | |
Metals/Ions
| EC Number | Metals/Ions | Comment | Organism | Structure |
|---|---|---|---|---|
| 3.1.3.12 | Mg2+ | required, optimal concentration: 4 mM | Phormia regina | |
Molecular Weight [Da]
| EC Number | Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|---|
| 3.1.3.12 | 25000 | 26000 | gel filtration, sucrose density gradient centrifugation | Phormia regina |
Organism
| EC Number | Organism | UniProt | Comment | Textmining |
|---|---|---|---|---|
| 3.1.3.12 | Phormia regina | - |
- |
- |
Purification (Commentary)
| EC Number | Purification (Comment) | Organism |
|---|---|---|
| 3.1.3.12 | - |
Phormia regina |
Specific Activity [micromol/min/mg]
| EC Number | Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
|---|---|---|---|---|
| 3.1.3.12 | 0.631 | - |
trehalose activated hydrolysis of glucose 6-phosphate | Phormia regina |
Substrates and Products (Substrate)
| EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|---|
| 3.1.3.12 | 2-Deoxy-D-glucose 6-phosphate + H2O | - |
Phormia regina | 2-Deoxy-D-glucose + phosphate | - |
? | |
| 3.1.3.12 | D-fructose 6-phosphate + H2O | - |
Phormia regina | D-fructose + phosphate | - |
? | |
| 3.1.3.12 | glucose 6-phosphate + H2O | activated by trehalose | Phormia regina | ? | - |
? | |
| 3.1.3.12 | trehalose-6-phosphate + H2O | - |
Phormia regina | trehalose + phosphate | - |
? | |
Temperature Stability [°C]
| EC Number | Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
|---|---|---|---|---|
| 3.1.3.12 | 53 | - |
5 min, 25% loss of activity | Phormia regina |
| 3.1.3.12 | 60 | - |
5 min, 75-90% loss of activity | Phormia regina |
pH Optimum
| EC Number | pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|---|
| 3.1.3.12 | 6 | 6.5 | hydrolysis of trehalose 6-phosphate | Phormia regina |
| 3.1.3.12 | 6 | - |
hydrolysis of glucose 6-phosphate in presence of trehalose | Phormia regina |
| 3.1.3.12 | 7 | - |
hydrolysis of glucose 6-phosphate in absence of trehalose | Phormia regina |
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