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Literature summary for 3.2.1.1 extracted from

  • Uchino, F.
    A thermostable and unusually acidophilic amylase produced by a thermophilic acidophilic Bacillus sp. (1982), Agric. Biol. Chem., 46, 7-13.
No PubMed abstract available

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
additional information 1.64 mg/ml for soluble starch Bacillus sp. (in: Bacteria)

Localization

Localization Comment Organism GeneOntology No. Textmining
extracellular
-
Bacillus sp. (in: Bacteria)
-
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
54000
-
x * 54000, SDS-PAGE Bacillus sp. (in: Bacteria)

Organism

Organism UniProt Comment Textmining
Bacillus sp. (in: Bacteria)
-
-
-
Bacillus sp. (in: Bacteria) 11-1S
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Bacillus sp. (in: Bacteria)

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
17.9
-
-
Bacillus sp. (in: Bacteria)

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
starch + H2O soluble starch Bacillus sp. (in: Bacteria) additional information major products are maltotriose and maltose ?
starch + H2O soluble starch Bacillus sp. (in: Bacteria) 11-1S additional information major products are maltotriose and maltose ?

Subunits

Subunits Comment Organism
? x * 54000, SDS-PAGE Bacillus sp. (in: Bacteria)

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
70
-
-
Bacillus sp. (in: Bacteria)

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
50 75 at 50°C and at 75°C: about 40% of maximal activity Bacillus sp. (in: Bacteria)

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
65
-
15 min, 0.1 M sodium acetate-HCl buffer Bacillus sp. (in: Bacteria)
70
-
pH 2, 10 min, 40% loss of activity, 94% loss of activity after 30 min Bacillus sp. (in: Bacteria)

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
2
-
-
Bacillus sp. (in: Bacteria)

pH Range

pH Minimum pH Maximum Comment Organism
1 6 pH 1.0: about 70% of maximal activity, pH 6.0: about 30% of maximal activity Bacillus sp. (in: Bacteria)

pH Stability

pH Stability pH Stability Maximum Comment Organism
1 2 65°C, 15 min, stable Bacillus sp. (in: Bacteria)
4
-
65°C, 15 min, about 20% loss of activity Bacillus sp. (in: Bacteria)