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Literature summary for 3.2.1.24 extracted from

  • Augustin, J.; Sikl, D.; Zemek, J.
    Properties of extracellular alpha-mannosidase from Aspergillus flavus (1978), Collect. Czech. Chem. Commun., 43, 2812-2816.
No PubMed abstract available

Activating Compound

Activating Compound Comment Organism Structure
NaCl increasing activity up to 1.6 M Aspergillus flavus

Inhibitors

Inhibitors Comment Organism Structure
Cu2+ 87% inhibition at 20 mM Aspergillus flavus
Fe2+ 22% inhibition at 20 mM Aspergillus flavus
Li+ 88% inhibition at 20 mM Aspergillus flavus
Mg2+ 61% inhibition at 20 mM Aspergillus flavus
Zn2+ 25% inhibition at 20 mM Aspergillus flavus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.4
-
p-nitrophenyl-alpha-D-mannopyranoside
-
Aspergillus flavus

Localization

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

Organism

Organism UniProt Comment Textmining
Aspergillus flavus
-
-
-

Purification (Commentary)

Purification (Comment) Organism
partial Aspergillus flavus

Source Tissue

Source Tissue Comment Organism Textmining
cell culture
-
Aspergillus flavus
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
87.7
-
-
Aspergillus flavus

Storage Stability

Storage Stability Organism
-10°C, several weeks Aspergillus flavus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
p-nitrophenyl-alpha-D-mannopyranoside + H2O
-
Aspergillus flavus p-nitrophenol + alpha-D-mannopyranose
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
37 40
-
Aspergillus flavus

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
50
-
complete loss of activity after 15 min Aspergillus flavus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
4.2 4.5
-
Aspergillus flavus

pH Stability

pH Stability pH Stability Maximum Comment Organism
6.3 6.8 most stable within Aspergillus flavus