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Literature summary extracted from

  • Nirmala, M.; Muralikrishna, G.
    Three alpha-amylases from malted finger millet (Ragi, Eleusine coracana, Indaf-15) - purification and partial characterization (2003), Phytochemistry, 62, 21-30.
    View publication on PubMed

Activating Compound

EC Number Activating Compound Comment Organism Structure
3.2.1.1 CaCl2 5 mm, 15% increase in activity Eleusine coracana
3.2.1.1 CaCl2 5 mm, 25% increase in activity Eleusine coracana
3.2.1.1 CaCl2 5 mm, 8% increase in activity Eleusine coracana

Inhibitors

EC Number Inhibitors Comment Organism Structure
3.2.1.1 AlCl3 5 mM, complete inhibition Eleusine coracana
3.2.1.1 CdCl2 5 mM, 14% inhibition; 5 mM, 38% inhibition; 5 mM, 43% inhibition Eleusine coracana
3.2.1.1 CuCl2 5 mM, 88% inhibition; 5 mM, 89% inhibition; 5 mM, 94% inhibition Eleusine coracana
3.2.1.1 FeCl2 5 mM, complete inhibition Eleusine coracana
3.2.1.1 HgCl2 5 mM, complete inhibition Eleusine coracana
3.2.1.1 ZnCl2 5 mM, 70% inhibition; 5 mM, 74% inhibition; 5 mM, 80% inhibition Eleusine coracana

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.2.1.1 additional information
-
starch 0.53%, ragi starch, 45°C, pH 5.0 Eleusine coracana
3.2.1.1 additional information
-
starch 0.59%, ragi starch, 45°C, pH 5.0 Eleusine coracana
3.2.1.1 additional information
-
starch 1.1%, ragi starch, 45°C, pH 5.0 Eleusine coracana

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
3.2.1.1 22000
-
gel filtration Eleusine coracana
3.2.1.1 26000
-
gel filtration Eleusine coracana
3.2.1.1 47000
-
x * 47000, SDS-PAGE Eleusine coracana

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
3.2.1.1 starch + H2O Eleusine coracana
-
fragments of starch
-
?

Organism

EC Number Organism UniProt Comment Textmining
3.2.1.1 Eleusine coracana
-
finger millet or ragi
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.2.1.1 acetone, DEAE-Sephacel, Sephacryl S-200 Eleusine coracana

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.2.1.1 975
-
-
Eleusine coracana
3.2.1.1 1500
-
-
Eleusine coracana
3.2.1.1 1773
-
-
Eleusine coracana

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.1.1 starch + H2O
-
Eleusine coracana fragments of starch
-
?

Subunits

EC Number Subunits Comment Organism
3.2.1.1 ? x * 47000, SDS-PAGE Eleusine coracana

Synonyms

EC Number Synonyms Comment Organism
3.2.1.1 alpha-amylase 1
-
Eleusine coracana
3.2.1.1 alpha-amylase 2
-
Eleusine coracana
3.2.1.1 alpha-amylase 3
-
Eleusine coracana

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
3.2.1.1 45
-
-
Eleusine coracana
3.2.1.1 50
-
-
Eleusine coracana

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.2.1.1 5
-
-
Eleusine coracana
3.2.1.1 5
-
drastic decrease in activity at pH 4.0 Eleusine coracana
3.2.1.1 5.5
-
drastic decrease in activity at pH 4.0 Eleusine coracana

pH Range

EC Number pH Minimum pH Maximum Comment Organism
3.2.1.1 4 5 drastic decrease in activity at pH 4.0 Eleusine coracana