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Literature summary extracted from

  • Manzanares, P.; de Graaff, L.H.; Visser, J.
    Characterization of galactosidases from Aspergillus niger: purification of a novel alpha-galactosidase activity (1998), Enzyme Microb. Technol., 22, 383-390.
    View publication on PubMed

Organism

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

Purification (Commentary)

EC Number Purification (Comment) Organism
3.2.1.23
-
 Aspergillus niger

Source Tissue

EC Number Source Tissue Comment Organism Textmining

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.2.1.23 33.3
-
-
 Aspergillus niger

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.1.23 lactose + H2O
-
 Aspergillus niger D-glucose + D-galactose
-
 ?
3.2.1.23 p-nitrophenyl-beta-D-galactoside + H2O
-
 Aspergillus niger p-nitrophenol + beta-D-galactose
-
 ?
3.2.1.23 pectic galactan + H2O
-
 Aspergillus niger ?
-
 ?

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
3.2.1.23 60 65
-
 Aspergillus niger

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
3.2.1.23 55
-
 8 h, stable up to Aspergillus niger
3.2.1.23 65
-
 4 h, 60% of the activity remains Aspergillus niger

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.2.1.23 4
-
-
 Aspergillus niger

pH Stability

EC Number pH Stability pH Stability Maximum Comment Organism
3.2.1.23 3 5 30°C, 20 h, stable Aspergillus niger