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Literature summary extracted from

  • De Palma-Fernandez, E.R.; Gomes, E.; Da Silva, R.
    Purification and characterization of two beta-glucosidases from the thermophilic fungus Thermoascus aurantiacus (2002), Folia Microbiol. (Praha), 47, 685-690.
    View publication on PubMed

Inhibitors

EC Number Inhibitors Comment Organism Structure
3.2.1.21 AgNO3 100 mM, 69% inhibition; 100 mM, 90% inhibition Thermoascus aurantiacus
3.2.1.21 CoCl2 100 mM, 54% inhibition Thermoascus aurantiacus
3.2.1.21 CuSO4 100 mM, 48% inhibition; 100 mM, 66% inhibition Thermoascus aurantiacus
3.2.1.21 FeCl3 100 mM, 59% inhibition Thermoascus aurantiacus
3.2.1.21 HgCl2 100 mM, 53% inhibition; 100 mM, 64% inhibition Thermoascus aurantiacus
3.2.1.21 KCl 100 mM, 54% inhibition Thermoascus aurantiacus
3.2.1.21 MgSO4 100 mM, 44% inhibition Thermoascus aurantiacus

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.2.1.21 1.17
-
p-nitrophenyl-beta-D-glucopyranoside 80°C, pH 4.5 Thermoascus aurantiacus
3.2.1.21 1.38
-
p-nitrophenyl-beta-D-glucopyranoside 75°C, pH 4.0 Thermoascus aurantiacus

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
3.2.1.21 Ca2+ slight stimulation Thermoascus aurantiacus

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
3.2.1.21 157000
-
x * 157000, SDS-PAGE Thermoascus aurantiacus
3.2.1.21 175000
-
x * 175000, SDS-PAGE Thermoascus aurantiacus

Organism

EC Number Organism UniProt Comment Textmining
3.2.1.21 Thermoascus aurantiacus
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.2.1.21 ethanol precipitation, Sephadex G-100, Q-Sepharose Thermoascus aurantiacus

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.2.1.21 458.9
-
-
Thermoascus aurantiacus
3.2.1.21 771
-
-
Thermoascus aurantiacus

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.1.21 p-nitrophenyl-beta-D-glucopyranoside + H2O
-
Thermoascus aurantiacus p-nitrophenol + beta-D-glucose
-
?

Subunits

EC Number Subunits Comment Organism
3.2.1.21 ? x * 175000, SDS-PAGE Thermoascus aurantiacus
3.2.1.21 ? x * 157000, SDS-PAGE Thermoascus aurantiacus

Synonyms

EC Number Synonyms Comment Organism
3.2.1.21 Gl-2
-
Thermoascus aurantiacus
3.2.1.21 Gl-3
-
Thermoascus aurantiacus

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
3.2.1.21 75
-
-
Thermoascus aurantiacus
3.2.1.21 80
-
-
Thermoascus aurantiacus

Temperature Range [°C]

EC Number Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
3.2.1.21 50 90 approx. 25% of maximal activity at 50°C, approx. 40% of maximal activity at 90°C Thermoascus aurantiacus
3.2.1.21 50 90 approx. 30% of maximal activity at 50°C, approx. 20% of maximal activity at 90°C Thermoascus aurantiacus

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
3.2.1.21 70
-
25% loss of activity after 1 h Thermoascus aurantiacus
3.2.1.21 70
-
18% loss of activity after 1 h Thermoascus aurantiacus

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.2.1.21 4
-
-
Thermoascus aurantiacus
3.2.1.21 4.5
-
-
Thermoascus aurantiacus

pH Range

EC Number pH Minimum pH Maximum Comment Organism
3.2.1.21 3 7 approx. 65% of maximal activity at pH 3.0, approx. 10% of maximal activity at pH 6.0 Thermoascus aurantiacus
3.2.1.21 3 7 approx. 80% of maximal activity at pH 3.0, approx. 18% of maximal activity at pH 6.0 Thermoascus aurantiacus

pH Stability

EC Number pH Stability pH Stability Maximum Comment Organism
3.2.1.21 4 9 no loss of activity Thermoascus aurantiacus
3.2.1.21 5.5 8.5 no loss of activity Thermoascus aurantiacus