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Literature summary for 3.2.1.22 extracted from

  • Shankar, S.K.; Dhananjay, S.K.; Mulimani, V.H.
    Purification and characterization of thermostable alpha-galactosidase from Aspergillus terreus (GR) (2009), Appl. Biochem. Biotechnol., 152, 275-285.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
Ag+
-
Aspergillus terreus
Cu2+
-
Aspergillus terreus
Hg2+
-
Aspergillus terreus
additional information not inhibitory: Mg2+, Ni2+, Ca2+, Co2+, Mn2+ Aspergillus terreus
N-bromosuccinimide 100% inhibition Aspergillus terreus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.1
-
4-nitrophenyl alpha-D-galactoside pH 5.0, 65°C Aspergillus terreus
0.28
-
2-nitrophenyl alpha-D-galactoside pH 5.0, 65°C Aspergillus terreus
0.33
-
stachyose pH 5.0, 65°C Aspergillus terreus
0.42
-
raffinose pH 5.0, 65°C Aspergillus terreus

Localization

Localization Comment Organism GeneOntology No. Textmining
extracellular
-
Aspergillus terreus
-
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
108000
-
x * 108000, SDS-PAGE Aspergillus terreus

Organism

Organism UniProt Comment Textmining
Aspergillus terreus
-
growth on guar gum as sole carbon source
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
36.8
-
pH 5.0, 65°C Aspergillus terreus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2-nitrophenyl alpha-D-galactoside + H2O
-
Aspergillus terreus 2-nitrophenol + alpha-D-galactose
-
?
4-nitrophenyl alpha-D-galactoside + H2O
-
Aspergillus terreus 4-nitrophenol + alpha-D-galactose
-
?
raffinose + H2O
-
Aspergillus terreus sucrose + alpha-D-galactose
-
?
stachyose + H2O
-
Aspergillus terreus ?
-
?

Subunits

Subunits Comment Organism
? x * 108000, SDS-PAGE Aspergillus terreus

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
65
-
-
Aspergillus terreus

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
65
-
40 min, stable Aspergillus terreus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5
-
-
Aspergillus terreus