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Literature summary extracted from

  • Yamasaki, Y.; Konno, H.
    Three forms of alpha-glucosidase from suspension-cultured rice cells (1985), Agric. Biol. Chem., 49, 3383-3390.
No PubMed abstract available

Inhibitors

EC Number Inhibitors Comment Organism Structure
3.2.1.20 castanospermine competitive Oryza sativa
3.2.1.20 Hg2+
-
Oryza sativa

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.2.1.20 1.848
-
maltose alpha-glucosidase I and III Oryza sativa
3.2.1.20 2.523
-
maltose alpha-glucosidase II Oryza sativa

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
3.2.1.20 58000
-
alpha-glucosidase III, gel filtration Oryza sativa
3.2.1.20 84000
-
alpha-glucosidase II, gel filtration Oryza sativa
3.2.1.20 96000
-
alpha-glucosidase III, gel filtration Oryza sativa

Organism

EC Number Organism UniProt Comment Textmining
3.2.1.20 Oryza sativa
-
Norin No. 16
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.2.1.20 alpha-glucosidase I, II and III Oryza sativa

Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.2.1.20 cell suspension culture
-
Oryza sativa
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.1.20 amylose + H2O
-
Oryza sativa alpha-D-glucose
-
?
3.2.1.20 isomaltose + H2O
-
Oryza sativa 2 alpha-D-glucose
-
?
3.2.1.20 maltose
-
Oryza sativa panose + ? alpha-glucosyltransfer product ?
3.2.1.20 maltose + H2O
-
Oryza sativa alpha-D-glucose + D-glucose
-
?
3.2.1.20 maltotetraose + H2O
-
Oryza sativa alpha-D-glucose
-
?
3.2.1.20 maltotriose + H2O
-
Oryza sativa maltose + D-glucose
-
?
3.2.1.20 starch + H2O soluble Oryza sativa alpha-D-glucose
-
?

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
3.2.1.20 50 55 alpha-glucosidase II and III Oryza sativa
3.2.1.20 55
-
alpha-glucosidase I Oryza sativa

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
3.2.1.20 45
-
pH 4.5, 15 min, alpha-glucosidase I and III, stable up to Oryza sativa
3.2.1.20 55
-
pH 4.5, 15 min, alpha-glucosidase II, stable up to Oryza sativa

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.2.1.20 4
-
alpha-glucosidase II Oryza sativa
3.2.1.20 4 4.5 alpha-glucosidase I Oryza sativa

pH Stability

EC Number pH Stability pH Stability Maximum Comment Organism
3.2.1.20 4 7 30°C, 20 h, stable Oryza sativa