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Literature summary extracted from

  • Patel, H.; Kumar, A.K.; Shah, A.
    Purification and characterization of novel bi-functional GH3 family beta-xylosidase/beta-glucosidase from Aspergillus niger ADH-11 (2018), Int. J. Biol. Macromol., 109, 1260-1269 .
    View publication on PubMed

Inhibitors

EC Number Inhibitors Comment Organism Structure
3.2.1.37 CoCl2 10 mM, slight inhibition Aspergillus niger
3.2.1.37 CuSO4 10 mM, 71.34% inhibition Aspergillus niger
3.2.1.37 MgSO4 10 mM, slight inhibition Aspergillus niger
3.2.1.37 MnSO4 10 mM, slight inhibition Aspergillus niger
3.2.1.37 Sodium azide 10 mM, 5-6% inhibition Aspergillus niger

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.2.1.37 1.17
-
4-nitrophenyl beta-D-xylopyranoside pH 4.0, 65°C Aspergillus niger

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
3.2.1.37 Ca2+ addition of 10 mM CaCl2 enhances the beta-xylosidase activity by 10.22% Aspergillus niger

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
3.2.1.37 120480
-
SDS-PAGE Aspergillus niger

Organism

EC Number Organism UniProt Comment Textmining
3.2.1.37 Aspergillus niger
-
-
-
3.2.1.37 Aspergillus niger ADH-11
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.2.1.37
-
Aspergillus niger

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.2.1.37 3.09
-
substrate: 4-nitrophenyl alpha-L-arabinofuranoside, pH 4.0, 65°C Aspergillus niger
3.2.1.37 5.4
-
substrate: birchwood xylan, pH 4.0, 65°C Aspergillus niger
3.2.1.37 31.5
-
substrate: 4-nitrophenyl beta-D-glucopyranoside, pH 4.0, 65°C Aspergillus niger
3.2.1.37 61.17
-
substrate: 4-nitrophenyl beta-D-xylopyranoside, pH 4.0, 65°C Aspergillus niger

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.1.37 4-nitrophenyl alpha-L-arabinofuranoside + H2O
-
Aspergillus niger 4-nitrophenol + alpha-L-arabinofuranose
-
?
3.2.1.37 4-nitrophenyl alpha-L-arabinofuranoside + H2O
-
Aspergillus niger ADH-11 4-nitrophenol + alpha-L-arabinofuranose
-
?
3.2.1.37 4-nitrophenyl beta-D-glucopyranoside + H2O
-
Aspergillus niger 4-nitrophenol + beta-D-glucopyranose
-
?
3.2.1.37 4-nitrophenyl beta-D-glucopyranoside + H2O
-
Aspergillus niger ADH-11 4-nitrophenol + beta-D-glucopyranose
-
?
3.2.1.37 4-nitrophenyl beta-D-xylopyranoside + H2O
-
Aspergillus niger 4-nitrophenol + beta-D-xylopyranose
-
?
3.2.1.37 4-nitrophenyl beta-D-xylopyranoside + H2O
-
Aspergillus niger ADH-11 4-nitrophenol + beta-D-xylopyranose
-
?
3.2.1.37 birchwood xylan + H2O
-
Aspergillus niger beta-D-xylose + ?
-
?
3.2.1.37 birchwood xylan + H2O
-
Aspergillus niger ADH-11 beta-D-xylose + ?
-
?

Subunits

EC Number Subunits Comment Organism
3.2.1.37 ? x * 120480, SDS-PAGE Aspergillus niger

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
3.2.1.37 65
-
-
Aspergillus niger

Temperature Range [°C]

EC Number Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
3.2.1.37 60 70 60°C: 81% of maximal activity, 70°C: 78% of maximal activity Aspergillus niger

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
3.2.1.37 65
-
3 h, stable Aspergillus niger
3.2.1.37 75
-
51.13% activity is retained after 1 h. 15% activity is retained up to 3 h Aspergillus niger

Turnover Number [1/s]

EC Number Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
3.2.1.37 36.08
-
4-nitrophenyl beta-D-xylopyranoside pH 4.0, 65°C Aspergillus niger

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.2.1.37 4
-
-
Aspergillus niger

pH Range

EC Number pH Minimum pH Maximum Comment Organism
3.2.1.37 3.5 4.5 pH 3.5: 73% of maximal activity, pH 4.5: 78% of maximal activity Aspergillus niger

pH Stability

EC Number pH Stability pH Stability Maximum Comment Organism
3.2.1.37 4
-
the enzyme retain its activity up to 87.37% at pH 4 after 3 h Aspergillus niger
3.2.1.37 5
-
3 h, activity is reduced to 30.21% Aspergillus niger
3.2.1.37 6
-
3 h, activity is reduced to 23.07% Aspergillus niger

kcat/KM [mM/s]

EC Number kcat/KM Value [1/mMs-1] kcat/KM Value Maximum [1/mMs-1] Substrate Comment Organism Structure
3.2.1.37 30.84
-
4-nitrophenyl beta-D-xylopyranoside pH 4.0, 65°C Aspergillus niger