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Literature summary for 3.2.1.20 extracted from

  • Yamasaki, Y.; Konno, H.
    Purification and properties of alpha-glucosidase from suspension-cultured sugar-beet cells (1991), Phytochemistry, 30, 2861-2863.
No PubMed abstract available

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.35
-
maltohexaose
-
Beta vulgaris
0.38
-
maltoheptaose
-
Beta vulgaris
0.64
-
maltopentaose
-
Beta vulgaris
1.43
-
maltotetraose
-
Beta vulgaris
3.47
-
maltose
-
Beta vulgaris

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
53000
-
x * 53000, SDS-PAGE Beta vulgaris

Organism

Organism UniProt Comment Textmining
Beta vulgaris
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Beta vulgaris

Source Tissue

Source Tissue Comment Organism Textmining
cell suspension culture
-
Beta vulgaris
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.85
-
-
Beta vulgaris

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
amylose + H2O
-
Beta vulgaris alpha-D-glucose
-
?
maltoheptaose + H2O
-
Beta vulgaris maltohexaose + D-glucose
-
?
maltohexaose + H2O
-
Beta vulgaris maltopentaose + D-glucose
-
?
maltopentaose + H2O
-
Beta vulgaris alpha-D-glucose + ?
-
?
maltose + H2O
-
Beta vulgaris alpha-D-glucose + D-glucose
-
?
maltotetraose + H2O
-
Beta vulgaris alpha-D-glucose
-
?
starch + H2O
-
Beta vulgaris alpha-D-glucose
-
?

Subunits

Subunits Comment Organism
? x * 53000, SDS-PAGE Beta vulgaris