General Stability | Organism |
---|---|
bovine serum albumin stabilizes the purified enzyme | Aplysia fasciata |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.26 | - |
4-nitrophenyl alpha-D-glucopyranoside | pH 5.8, 34°C | Aplysia fasciata | |
2.06 | - |
4-nitrophenyl alpha-D-glucopyranosyl-1,4-alpha-D-glucopyranoside | pH 5.8, 34°C | Aplysia fasciata | |
5.7 | - |
maltose | pH 5.8, 34°C | Aplysia fasciata |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
69000 | - |
4 * 69000, SDS-PAGE | Aplysia fasciata |
255000 | - |
gel filtration | Aplysia fasciata |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Aplysia fasciata | - |
- |
- |
Purification (Comment) | Organism |
---|---|
native enzyme 25fold by anion exchange and hydrophobic interaction chromatography, ammonium sulfate fractionation, again ion exchange chromatography, and ultrafiltration | Aplysia fasciata |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
38.4 | - |
purified enzyme | Aplysia fasciata |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
4-nitrophenyl alpha-D-glucopyranoside + H2O | - |
Aplysia fasciata | 4-nitrophenol + alpha-D-glucose | - |
? | |
4-nitrophenyl alpha-D-glucopyranosyl-1,4-alpha-D-glucopyranoside + H2O | alpha-1,4-glycosidic bond | Aplysia fasciata | 4-nitrophenol + alpha-D-glucose | - |
? | |
isomaltose + H2O | very low activity | Aplysia fasciata | 2 alpha-D-glucose | - |
? | |
maltose + H2O | - |
Aplysia fasciata | alpha-D-glucose + D-glucose | - |
? | |
additional information | no activity in hydrolysis with starch, panose, pullulan, amylopectin, amylose, isomaltose, and saccharose, the enzyme also performs transglycosylation reactions with different donors and a variety of acceptors, product determinations, the activity with alpha-1,4-glycosidic linkages is higher compared to alpha-1,6-glycosidic likanges, substrate specificity, overview | Aplysia fasciata | ? | - |
? |
Subunits | Comment | Organism |
---|---|---|
tetramer | 4 * 69000, SDS-PAGE | Aplysia fasciata |
Synonyms | Comment | Organism |
---|---|---|
alpha-D-glucosidase | - |
Aplysia fasciata |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
36 | 44 | - |
Aplysia fasciata |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
75.9 | - |
4-nitrophenyl alpha-D-glucopyranosyl-1,4-alpha-D-glucopyranoside | pH 5.8, 34°C | Aplysia fasciata | |
163 | - |
4-nitrophenyl alpha-D-glucopyranoside | pH 5.8, 34°C | Aplysia fasciata | |
489 | - |
maltose | pH 5.8, 34°C | Aplysia fasciata |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
5.8 | - |
- |
Aplysia fasciata |
pH Stability | pH Stability Maximum | Comment | Organism |
---|---|---|---|
5.5 | - |
34°C, 0.009 mg/ml bovine serum albumin, 19 h, 67% remaining activity, the half-life is about 30 h | Aplysia fasciata |
5.8 | - |
34°C, 0.009 mg/ml bovine serum albumin, 19 h, 64% remaining activity, the half-life is about 30 h | Aplysia fasciata |
6.5 | - |
34°C, 0.009 mg/ml bovine serum albumin, 19 h, 69% remaining activity, the half-life is about 30 h | Aplysia fasciata |