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Literature summary for 3.2.1.60 extracted from

  • Robyt, J.F.; Ackerman, R.J.
    Isolation, purification, and characterization of a maltotetraose-producing amylase from Pseudomonas stutzeri (1971), Arch. Biochem. Biophys., 145, 105-114.
    View publication on PubMed

General Stability

General Stability Organism
dialysis, 4°C, prolonged periods, complete loss of activity Pseudomonas stutzeri

Localization

Localization Comment Organism GeneOntology No. Textmining
extracellular
-
Pseudomonas stutzeri
-
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
12500
-
x * 12500, dimers, tetramers, hexamers, octamers or decamers, concentration dependent Pseudomonas stutzeri
125000
-
gel filtration Pseudomonas stutzeri

Organism

Organism UniProt Comment Textmining
Pseudomonas stutzeri
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Pseudomonas stutzeri

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
2590
-
-
Pseudomonas stutzeri

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
amylopectin + H2O
-
Pseudomonas stutzeri maltotetraose + ?
-
?
maltoheptaose + H2O
-
Pseudomonas stutzeri maltotetraose + maltotriose
-
?
maltohexaose + H2O
-
Pseudomonas stutzeri maltotetraose + maltose
-
?

Subunits

Subunits Comment Organism
oligomer x * 12500, dimers, tetramers, hexamers, octamers or decamers, concentration dependent Pseudomonas stutzeri

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
47
-
-
Pseudomonas stutzeri

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
15 60 15°C, 20% of maximal activity, 60°C, 30% of maximal activity Pseudomonas stutzeri

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8
-
-
Pseudomonas stutzeri

pH Range

pH Minimum pH Maximum Comment Organism
4.5 10.5 95% of maximum activity at pH 7 and pH 9.5, pH 4.5, 40% of maximal activity, pH 10.5, 82% of maximal activity Pseudomonas stutzeri