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Literature summary extracted from

  • Altaner, C.; Saake, B.; Puls, J.
    Specificity of an Aspergillus niger esterase deacetylating cellulose acetate (2003), Cellulose, 10, 85-95.
No PubMed abstract available

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.1.1.6 9.1
-
 Cellulose acetate pH 5.0, 45°C Aspergillus niger

Organism

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

Purification (Commentary)

EC Number Purification (Comment) Organism
3.1.1.6 from the crude commercial enzyme preparation, 27fold Aspergillus niger

Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.1.1.6 commercial preparation
-
 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 additional information
-
 substrate specificity Aspergillus niger
3.1.1.6 16050
-
 purified enzyme Aspergillus niger

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.1.1.6 acetyl xylan + H2O from beech wood or oat spelt Aspergillus niger xylan + acetate
-
 ?
3.1.1.6 cellobiose octaacetate + H2O low activity Aspergillus niger ?
-
 ?
3.1.1.6 cellulose acetate + H2O also in form of acetylated starch, water-soluble and water-insoluble substrate, specific for acetyl substituents at the C2- and C3-positions, C6-acetyl is not hydrolyzed Aspergillus niger cellulose + acetate
-
 ?
3.1.1.6 glucose pentaacetate + H2O good substrate Aspergillus niger ?
-
 ?
3.1.1.6 additional information substrate specificity and regioselectivity, deacetylation activity of the enzyme is not restricted to polymers with beta-1,4 glycosidic bonds, no activity with cellulose sulfate, the enzyme enhances endoglucanase, but is itself not influenced by endoglucanase Aspergillus niger ?
-
 ?

Synonyms

EC Number Synonyms Comment Organism
3.1.1.6 Acetyl esterase
-
 Aspergillus niger
3.1.1.6 AE
-
 Aspergillus niger

Temperature Optimum [°C]

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

pH Optimum

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

pI Value

EC Number Organism Comment pI Value Maximum pI Value
3.1.1.6 Aspergillus niger below, isoelectric focusing
-
 3