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Literature summary for 3.2.1.1 extracted from

  • Kanno, M.
    A Bacillus acidocaldarius alpha-amylase that is highly stable to heat under acidic conditions (1986), Agric. Biol. Chem., 50, 23-31.
No PubMed abstract available

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
additional information 1.6 mg/ml for starch Alicyclobacillus acidocaldarius

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
66000
-
x * 66000, SDS-PAGE Alicyclobacillus acidocaldarius

Organism

Organism UniProt Comment Textmining
Alicyclobacillus acidocaldarius
-
-
-
Alicyclobacillus acidocaldarius A-2
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Alicyclobacillus acidocaldarius

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
amylopectin + H2O
-
Alicyclobacillus acidocaldarius additional information
-
?
amylopectin + H2O
-
Alicyclobacillus acidocaldarius A-2 additional information
-
?
glycogen + H2O 68% of the activity with starch Alicyclobacillus acidocaldarius additional information
-
?
glycogen + H2O 68% of the activity with starch Alicyclobacillus acidocaldarius A-2 additional information
-
?
p-nitrophenyl alpha-D-maltoside + H2O
-
Alicyclobacillus acidocaldarius p-nitrophenol + maltose
-
?
p-nitrophenyl alpha-D-maltoside + H2O
-
Alicyclobacillus acidocaldarius A-2 p-nitrophenol + maltose
-
?
starch + H2O soluble starch Alicyclobacillus acidocaldarius additional information after 24 h: 6.1% glucose, 18.0% maltose, 21.0% maltotriose, 1.3% maltotetraose, 1.3% maltopentaose and 1.1% maltohexaose ?
starch + H2O corn starch Alicyclobacillus acidocaldarius additional information after 24 h: 6.1% glucose, 18.0% maltose, 21.0% maltotriose, 1.3% maltotetraose, 1.3% maltopentaose and 1.1% maltohexaose ?
starch + H2O soluble starch Alicyclobacillus acidocaldarius A-2 additional information after 24 h: 6.1% glucose, 18.0% maltose, 21.0% maltotriose, 1.3% maltotetraose, 1.3% maltopentaose and 1.1% maltohexaose ?
starch + H2O corn starch Alicyclobacillus acidocaldarius A-2 additional information after 24 h: 6.1% glucose, 18.0% maltose, 21.0% maltotriose, 1.3% maltotetraose, 1.3% maltopentaose and 1.1% maltohexaose ?

Subunits

Subunits Comment Organism
? x * 66000, SDS-PAGE Alicyclobacillus acidocaldarius

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
70
-
at pH 4.5 Alicyclobacillus acidocaldarius

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
50 90 50°C: about 35% of maximal activity, 90°C: about 65% of maximal activity Alicyclobacillus acidocaldarius

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
70
-
pH 2.0, 30 min, in absence of substrate, 73% of the activity remains Alicyclobacillus acidocaldarius
75
-
pH 3.5, 30 min, 10% loss of activity Alicyclobacillus acidocaldarius
80
-
pH 5.0, 30 min, stable Alicyclobacillus acidocaldarius
90
-
pH 4.5, 30 min, in absence of substrate, more than 90% of the activity remains Alicyclobacillus acidocaldarius

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
3.5
-
at 60°C Alicyclobacillus acidocaldarius

pH Range

pH Minimum pH Maximum Comment Organism
2 5.8 pH 2.0: about 40% of maximal activity, pH 5.8: about 35% of maximal activity Alicyclobacillus acidocaldarius

pH Stability

pH Stability pH Stability Maximum Comment Organism
2
-
70°C, 30 min, more than 70% of the activity remains Alicyclobacillus acidocaldarius
4 5.5 80°C, 15 min, stable Alicyclobacillus acidocaldarius
4.5
-
90°C, 30 min, in absence of substrate, more than 90% of the activity remains Alicyclobacillus acidocaldarius