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Literature summary extracted from

  • Kormelink, F.J.M.; Lefebvre, B.; Strozyk, F.; Voragen, A.G.J.
    Purification and characterization of an acetyl xylan esterase from Aspergillus niger (1993), J. Biotechnol., 27, 267-282.
No PubMed abstract available

Inhibitors

EC Number Inhibitors Comment Organism Structure
3.1.1.6 Pb(NO3)2
-
 Aspergillus niger
3.1.1.72 NiCl2 1 mM, 8% inhibition Aspergillus niger
3.1.1.72 Pb(NO3)2 1 mM Aspergillus niger

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
3.1.1.6 30480
-
 ? * 30480, SDS-PAGE Aspergillus niger
3.1.1.72 30480
-
 x * 30480, SDS-PAGE Aspergillus niger

Organism

EC Number Organism UniProt Comment Textmining
3.1.1.6 Aspergillus niger
-
-
-
3.1.1.72 Aspergillus niger
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.1.1.6
-
 Aspergillus niger
3.1.1.72
-
 Aspergillus niger

Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.1.1.72 culture filtrate
-
 Aspergillus niger
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.1.1.6 31
-
-
 Aspergillus niger
3.1.1.72 31
-
-
 Aspergillus niger

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.1.1.6 acetylxylan + H2O
-
 Aspergillus niger ?
-
 ?
3.1.1.6 p-nitrophenyl acetate + H2O
-
 Aspergillus niger p-nitrophenol + acetate
-
 ?
3.1.1.72 acetylxylan steamed birchwood xylan Aspergillus niger acetate + ?
-
 ?
3.1.1.72 additional information no activity with acetylated apple pectin or acetylated sugar beet pectin Aspergillus niger ?
-
 ?

Subunits

EC Number Subunits Comment Organism
3.1.1.6 More ? * 30480, SDS-PAGE Aspergillus niger
3.1.1.72 ? x * 30480, SDS-PAGE Aspergillus niger

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
3.1.1.6 50
-
-
 Aspergillus niger
3.1.1.72 50
-
-
 Aspergillus niger

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
3.1.1.72 45
-
 8 h, stable Aspergillus niger
3.1.1.72 50
-
 6 h, 50% loss of activity Aspergillus niger
3.1.1.72 55
-
 1 h, 50% loss of activity Aspergillus niger

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.1.1.6 5.5 6
-
 Aspergillus niger
3.1.1.72 5.5 6
-
 Aspergillus niger

pH Stability

EC Number pH Stability pH Stability Maximum Comment Organism
3.1.1.6 3 8
-
 Aspergillus niger
3.1.1.72 3 8 24 h, stable Aspergillus niger