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Literature summary extracted from

  • Arai, T.; Kawabata, A.; Taniguchi, H.
    Purification and some properties of Ichoimo beta-amylase (1991), Agric. Biol. Chem., 55, 399-405.
No PubMed abstract available

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
3.2.1.2 60000
-
 x * 60000, SDS-PAGE Dioscorea batatus

Organism

EC Number Organism UniProt Comment Textmining
3.2.1.2 Dioscorea batatus
-
 cultivar ichoimo
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.2.1.2
-
 Dioscorea batatus

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.2.1.2 161
-
-
 Dioscorea batatus

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.1.2 additional information no activity with cyclodextrins Dioscorea batatus ?
-
 ?
3.2.1.2 starch + H2O soluble Dioscorea batatus maltose + ? beta-maltose ?

Subunits

EC Number Subunits Comment Organism
3.2.1.2 ? x * 60000, SDS-PAGE Dioscorea batatus

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
3.2.1.2 55
-
-
 Dioscorea batatus

Temperature Range [°C]

EC Number Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
3.2.1.2 40 60 40°C: about 30% of maximal activity, 60°C: about 50% of maximal activity Dioscorea batatus

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.2.1.2 6
-
-
 Dioscorea batatus

pH Range

EC Number pH Minimum pH Maximum Comment Organism
3.2.1.2 3 7.5 no activity below pH 3.0 and above pH 7.5 Dioscorea batatus
3.2.1.2 4 7 pH 4.0: about 25% of maximal activity, pH 7.0: about 50% of maximal activity Dioscorea batatus

pH Stability

EC Number pH Stability pH Stability Maximum Comment Organism
3.2.1.2 4.3 8.5 30°C, 60 min, stable Dioscorea batatus