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Literature summary extracted from

  • Elbein, A.D.; Adya, S.; Lee, Y.C.
    Purification and properties of a beta-mannosidase from Aspergillus niger (1977), J. Biol. Chem., 252, 2026-2031.
    View publication on PubMed

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.2.1.25 2
-
p-nitrophenyl-beta-D-mannoside about Aspergillus niger

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
3.2.1.25 120000
-
gel filtration Aspergillus niger

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
3.2.1.25 additional information Aspergillus niger locust bean gum and guar flour are the best substrates for enzyme formation ?
-
?

Organism

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

Posttranslational Modification

EC Number Posttranslational Modification Comment Organism
3.2.1.25 glycoprotein oligosaccharide is attached to the protein in a GlcNAc-Asn linkage, mannose and glucosamine in the ratio of 2.5 or 3:1 Aspergillus niger

Purification (Commentary)

EC Number Purification (Comment) Organism
3.2.1.25
-
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
3.2.1.25 14.3
-
-
Aspergillus niger

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.1.25 Man-(beta1-4)GlcNAc + H2O
-
Aspergillus niger mannose + GlcNAc
-
?
3.2.1.25 Man-(beta1-4)ManNAc + H2O
-
Aspergillus niger mannose + ManNAc
-
?
3.2.1.25 Man-GlcNAc-GlcNAc + H2O
-
Aspergillus niger mannose + GlcNAc-GlcNAc
-
?
3.2.1.25 additional information locust bean gum and guar flour are the best substrates for enzyme formation Aspergillus niger ?
-
?
3.2.1.25 p-nitrophenyl-beta-D-mannoside + H2O no activity with p-nitrophenyl-alpha-D-mannoside Aspergillus niger p-nitrophenol + alpha-D-mannose
-
?

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.2.1.25 3.5 4.5
-
Aspergillus niger