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Literature summary extracted from

  • Matsui, H.; Yazawa, I.; Chiba, S.
    Purification and substrate specificity of sweet corn alpha-glucosidase (1981), Agric. Biol. Chem., 45, 887-894.
No PubMed abstract available

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.2.1.20 0.2
-
turanose
-
Zea mays
3.2.1.20 0.4
-
kojibiose
-
Zea mays
3.2.1.20 1.1
-
Phenyl alpha-maltoside
-
Zea mays
3.2.1.20 1.2
-
maltotriose
-
Zea mays
3.2.1.20 1.4
-
nigerose
-
Zea mays
3.2.1.20 1.5
-
maltose
-
Zea mays
3.2.1.20 1.9
-
maltotetraose
-
Zea mays
3.2.1.20 2.4
-
maltopentaose
-
Zea mays
3.2.1.20 3.4
-
maltohexaose
-
Zea mays
3.2.1.20 3.8
-
maltoheptaose
-
Zea mays
3.2.1.20 4.2
-
Phenyl alpha-maltoside
-
Zea mays
3.2.1.20 4.3
-
maltooctaose
-
Zea mays
3.2.1.20 5
-
panose
-
Zea mays
3.2.1.20 5.2
-
amylose DP = 13 Zea mays
3.2.1.20 14
-
isomaltose
-
Zea mays

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
3.2.1.20 96000
-
x * 96000, SDS-PAGE Zea mays

Organism

EC Number Organism UniProt Comment Textmining
3.2.1.20 Zea mays
-
L. var. saccharata
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.2.1.20
-
Zea mays

Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.2.1.20 seed
-
Zea mays
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.2.1.20 54.3
-
-
Zea mays

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.1.20 amylose + H2O
-
Zea mays beta-maltose + ?
-
?
3.2.1.20 isomaltose + H2O
-
Zea mays 2 alpha-D-glucose
-
?
3.2.1.20 kojibiose + H2O
-
Zea mays alpha-D-glucose + D-glucose
-
?
3.2.1.20 maltoheptaose + H2O
-
Zea mays beta-maltose + maltopentaose
-
?
3.2.1.20 maltohexaose + H2O
-
Zea mays beta-maltose + maltotetraose
-
?
3.2.1.20 maltooctaose + H2O
-
Zea mays alpha-D-glucose
-
?
3.2.1.20 maltopentaose + H2O
-
Zea mays beta-maltose + maltotriose
-
?
3.2.1.20 maltose + H2O
-
Zea mays alpha-D-glucose + D-glucose
-
?
3.2.1.20 maltotetraose + H2O
-
Zea mays ?
-
?
3.2.1.20 maltotriose + H2O
-
Zea mays D-glucose + maltose
-
?
3.2.1.20 nigerose + H2O
-
Zea mays 2 alpha-D-glucose
-
?
3.2.1.20 panose + H2O
-
Zea mays maltose + alpha-D-glucose
-
?
3.2.1.20 phenyl alpha-D-glucoside + H2O
-
Zea mays phenol + alpha-D-glucose
-
?
3.2.1.20 phenyl alpha-maltoside + H2O
-
Zea mays alpha-D-glucose + phenyl alpha-D-glucoside
-
?
3.2.1.20 starch + H2O
-
Zea mays alpha-D-glucose
-
?
3.2.1.20 turanose + H2O
-
Zea mays alpha-D-glucose + D-fructose
-
?

Subunits

EC Number Subunits Comment Organism
3.2.1.20 ? x * 96000, SDS-PAGE Zea mays

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.2.1.20 3.6
-
hydrolysis of maltose and soluble starch Zea mays

pH Range

EC Number pH Minimum pH Maximum Comment Organism
3.2.1.20 2.3 5.5 pH 2.3: about 65% of maximal maltase activity, about 20% of maximal glucoamylase activity, pH 5.5: about 35% of maximal maltase activity, about 45% of maximal glucoamylase activity Zea mays