Inhibitors | Comment | Organism | Structure |
---|---|---|---|
Ag2+ | 10 mM | Aspergillus niveus | |
beta-mercaptoethanol | 10 mM | Aspergillus niveus | |
Fe2+ | 10 mM | Aspergillus niveus |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
additional information | - |
glycogen | 0.04 mg/ml | Aspergillus niveus | |
additional information | - |
starch | 0.07 mg/ml | Aspergillus niveus | |
additional information | - |
amylopectin | 0.11 mg/ml | Aspergillus niveus | |
additional information | - |
maltose | 0.57 mg/ml | Aspergillus niveus | |
0.55 | - |
p-nitrophenyl alpha-D-glucopyranoside | - |
Aspergillus niveus |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
extracellular | - |
Aspergillus niveus | - |
- |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Ag2+ | inhibitor, 10 mM | Aspergillus niveus | |
Fe2+ | inhibitor, 10 mM | Aspergillus niveus |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
52000 | - |
Bio-Sil-Sec-400 gel filtration column | Aspergillus niveus |
56000 | - |
SDS-PAGE | Aspergillus niveus |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Aspergillus niveus | - |
- |
- |
Purification (Comment) | Organism |
---|---|
DEAE-Fractogel ion-exchange chromatography and Sephacryl S-200 gel filtration | Aspergillus niveus |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
additional information | - |
0.2 micromol/min/ml, substrate trehalose | Aspergillus niveus |
additional information | - |
0.3 micromol/min/ml, substrate isomaltose | Aspergillus niveus |
additional information | - |
0.4 micromol/min/ml, substrate beta-cyclodextrin | Aspergillus niveus |
additional information | - |
1.2 micromol/min/ml, substrate p-nitrophenyl alpha-D-glucopyranoside | Aspergillus niveus |
additional information | - |
2.7 micromol/min/ml, substrate maltose | Aspergillus niveus |
additional information | - |
4.2 micromol/min/ml, substrate amylopectin | Aspergillus niveus |
additional information | - |
4.2 micromol/min/ml, substrate maltooligosaccharide | Aspergillus niveus |
additional information | - |
4.2 micromol/min/ml, substrate maltotriose | Aspergillus niveus |
additional information | - |
4.3 micromol/min/ml, substrate maltotetraose | Aspergillus niveus |
additional information | - |
4.3 micromol/min/ml, substrate starch | Aspergillus niveus |
additional information | - |
4.4 micromol/min/ml, substrate amylose | Aspergillus niveus |
additional information | - |
4.5 micromol/min/ml, substrate glycogen | Aspergillus niveus |
additional information | - |
4.5 micromol/min/ml, substrate maltopentaose | Aspergillus niveus |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
4-nitrophenyl alpha-D-glucopyranoside + H2O | assay at 65°C, pH 5.0, reaction stopped with Na2CO3 | Aspergillus niveus | 4-nitrophenol + D-glucose | - |
? | |
amylopectin + H2O | assay at 65°C, pH 5.0, reaction stopped with Na2CO3 | Aspergillus niveus | ? | - |
? | |
glycogen + H2O | assay at 65°C, pH 5.0, reaction stopped with Na2CO3 | Aspergillus niveus | ? | - |
? | |
maltose + H2O | assay at 65°C, pH 5.0, reaction stopped with Na2CO3 | Aspergillus niveus | ? | - |
? | |
starch + H2O | assay at 65°C, pH 5.0, reaction stopped with Na2CO3 | Aspergillus niveus | ? | - |
? |
Synonyms | Comment | Organism |
---|---|---|
alpha-glucosidase | - |
Aspergillus niveus |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
65 | - |
- |
Aspergillus niveus |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
60 | 65 | half-life at 60°C 104 min, half-life at 65°C 78 min | Aspergillus niveus |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.53 | - |
p-nitrophenyl alpha-D-glucopyranoside | - |
Aspergillus niveus | |
13.66 | - |
maltose | - |
Aspergillus niveus | |
24.5 | - |
glycogen | - |
Aspergillus niveus | |
24.62 | - |
starch | - |
Aspergillus niveus | |
25.48 | - |
amylopectin | - |
Aspergillus niveus |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
6 | - |
- |
Aspergillus niveus |
pH Stability | pH Stability Maximum | Comment | Organism |
---|---|---|---|
4 | 8.5 | acid-alkaline tolerant, remains stable after 2 h incubation | Aspergillus niveus |
kcat/KM Value [1/mMs-1] | kcat/KM Value Maximum [1/mMs-1] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
additional information | - |
p-nitrophenyl alpha-D-glucopyranoside | 0.96 1/s*mg*ml | Aspergillus niveus | |
additional information | - |
maltose | 23.96 1/s*mg*ml | Aspergillus niveus | |
additional information | - |
amylopectin | 231.64 1/s*mg*ml | Aspergillus niveus | |
additional information | - |
starch | 351.71 1/s*mg*ml | Aspergillus niveus | |
additional information | - |
glycogen | 612.5 1/s*mg*ml | Aspergillus niveus |