Inhibitors | Comment | Organism | Structure |
---|---|---|---|
EDTA | 2 mM inhibits 25% of enzyme activity | Thermoascus aurantiacus | |
Hg2+ | 2 mM inhibits 100% of enzyme activity | Thermoascus aurantiacus | |
Mg2+ | 2 mM inhibits 7% of enzyme activity | Thermoascus aurantiacus | |
Mn2+ | 2 mM inhibits 75% of enzyme activity | Thermoascus aurantiacus | |
Zn2+ | 2 mM inhibits 50% of enzyme activity | Thermoascus aurantiacus |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Ag+ | slightly stimulates | Thermoascus aurantiacus | |
K+ | slightly stimulates | Thermoascus aurantiacus | |
additional information | Ca2+ has no effect | Thermoascus aurantiacus |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
30000 | - |
x * 30000, SDS-PAGE | Thermoascus aurantiacus |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Thermoascus aurantiacus | - |
- |
- |
Thermoascus aurantiacus CBMAI-756 | - |
- |
- |
Purification (Comment) | Organism |
---|---|
to apparent homogeneity, 21fold, by gel filtration and cation-exchange chromatography | Thermoascus aurantiacus |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
5000 | - |
13.7fold purified enzyme | Thermoascus aurantiacus |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | the purified enzyme is an endo/exo-enzyme, releasing mono, di- and tri-galacturonic acids within 10 min of hydrolysis | Thermoascus aurantiacus | ? | - |
? | |
additional information | the purified enzyme is an endo/exo-enzyme, releasing mono, di- and tri-galacturonic acids within 10 min of hydrolysis | Thermoascus aurantiacus CBMAI-756 | ? | - |
? | |
pectin + H2O | citrus or apple pectin, highest enzyme activity with citrus pectin | Thermoascus aurantiacus | ? | - |
? | |
pectin + H2O | citrus or apple pectin, highest enzyme activity with citrus pectin | Thermoascus aurantiacus CBMAI-756 | ? | - |
? | |
polygalacturonic acid + H2O | - |
Thermoascus aurantiacus | ? | - |
? | |
polygalacturonic acid + H2O | - |
Thermoascus aurantiacus CBMAI-756 | ? | - |
? |
Subunits | Comment | Organism |
---|---|---|
? | x * 30000, SDS-PAGE | Thermoascus aurantiacus |
Synonyms | Comment | Organism |
---|---|---|
endo-PG | - |
Thermoascus aurantiacus |
endo-polygalacturonase | - |
Thermoascus aurantiacus |
Exo-PG | - |
Thermoascus aurantiacus |
exo-polygalacturonase | - |
Thermoascus aurantiacus |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
65 | - |
- |
Thermoascus aurantiacus |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
50 | - |
the purified enzyme is 100% stable at 50°C for 1 h, half-life of 10 min at 60°C. At 60°C, enzymatic activity decreases to only 20% of original activity after 1 h | Thermoascus aurantiacus |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
5.5 | - |
- |
Thermoascus aurantiacus |
pH Stability | pH Stability Maximum | Comment | Organism |
---|---|---|---|
5 | 6.5 | in the absence of substrate, the purified enzyme is stable in a narrow pH range, with 100% stability at 5.0, although 55% of this activity is retained at pH 6.5. It maintains 33% of initial activity at pH 9.0 | Thermoascus aurantiacus |
Organism | Comment | pI Value Maximum | pI Value |
---|---|---|---|
Thermoascus aurantiacus | isoelectric focusing | - |
7.8 |