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Literature summary for 3.2.1.20 extracted from
- Multiple forms of alpha-glucosidase from pig duodenum (1985), Agric. Biol. Chem., 49, 1573-1581.
No PubMed abstract available
KM Value [mM]
| KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 0.37 | - |
maltotriose | alpha-glucosidase IIa | Sus scrofa |  |
| 1.67 | - |
maltotriose | alpha-glucosidase IIa | Sus scrofa | |
| 1.72 | - |
amylose | alpha-glucosidase IIa | Sus scrofa | |
| 2.61 | - |
maltotriose | alpha-glucosidase IIb | Sus scrofa | |
| 3.33 | - |
maltose | alpha-glucosidase IIb | Sus scrofa | |
| 11.8 | - |
amylose | alpha-glucosidase IIb | Sus scrofa | |
Molecular Weight [Da]
| Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|
| 80000 | - |
x * 80000, alpha-glucoamylase Ib and IIb, SDS-PAGE | Sus scrofa |
| 145000 | - |
x * 145000, alpha-glucoamylase IIa, SDS-PAGE | Sus scrofa |
| 150000 | - |
x * 150000, alpha-glucosidase Ia, SDS-PAGE | Sus scrofa |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Sus scrofa | - |
- |
- |
Purification (Commentary)
| Purification (Comment) | Organism |
|---|---|
| alpha-glucosidase Ia, Ib, IIa and IIb | Sus scrofa |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|
| duodenum | - |
Sus scrofa | - |
Specific Activity [micromol/min/mg]
| Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
|---|---|---|---|
| additional information | - |
- |
Sus scrofa |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| amylose + H2O | low activity with alpha-glucosidase Ia and IIa, only traces of activity with alpha-glucosidase Ib and IIb | Sus scrofa | alpha-D-glucose | - |
? | |
| kojibiose + H2O | low activity with alpha-glucosidase Ia and IIa, only traces of activity with alpha-glucosidase Ib and IIb | Sus scrofa | alpha-D-glucose + D-glucose | - |
? | |
| maltose + H2O | - |
Sus scrofa | alpha-D-glucose + D-glucose | - |
? | |
| maltotriose + H2O | - |
Sus scrofa | maltose + D-glucose | - |
? | |
| nigerose + H2O | - |
Sus scrofa | 2 alpha-D-glucose | - |
? | |
Subunits
| Subunits | Comment | Organism |
|---|---|---|
| ? | x * 145000, alpha-glucoamylase IIa, SDS-PAGE | Sus scrofa |
| ? | x * 80000, alpha-glucoamylase Ib and IIb, SDS-PAGE | Sus scrofa |
| ? | x * 150000, alpha-glucosidase Ia, SDS-PAGE | Sus scrofa |
Temperature Stability [°C]
| Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
|---|---|---|---|
| 70 | - |
glucoamylase Ib and IIb, stable up to | Sus scrofa |
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Release 2023.1 (January 2023)
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