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Literature summary for 3.2.1.78 extracted from

  • Naganagouda, K.; Salimath, P.V.; Mulimani, V.H.
    Purification and characterization of endo-beta-1,4 mannanase from Aspergillus niger gr for application in food processing industry (2009), J. Microbiol. Biotechnol., 19, 1184-1190.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
Ag+ complete inhibition Aspergillus niger
Cu2+ complete inhibition Aspergillus niger
Hg2+ complete inhibition Aspergillus niger
additional information not inhibitory: EDTA, phenyl methyl sulfonyl fluoride, 1,10-phenanthroline Aspergillus niger
N-bromosuccinimide complete inhibition Aspergillus niger
Zn2+ 68% residual activity Aspergillus niger

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
additional information Km values for locust bean gum, guar gum, and copra mannan, are 0.11, 0.28, and 0.33 mg/ml, respectively Aspergillus niger

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
65000
-
PAGE Aspergillus niger
66000
-
1 * 66000, SDS-PAGE Aspergillus niger

Organism

Organism UniProt Comment Textmining
Aspergillus niger
-
strain gr
-

Purification (Commentary)

Purification (Comment) Organism
-
Aspergillus niger

Source Tissue

Source Tissue Comment Organism Textmining

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
65
-
50°C Aspergillus niger

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
copra mannan + H2O 90% of the activity with locust bean gum Aspergillus niger ?
-
?
guar gum + H2O 90% of the activity with locust bean gum Aspergillus niger ?
-
?
locust bean gum + H2O
-
Aspergillus niger ?
-
?

Subunits

Subunits Comment Organism
monomer 1 * 66000, SDS-PAGE Aspergillus niger

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
55
-
-
Aspergillus niger

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
55
-
6 h, 50% residual activity Aspergillus niger

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.5
-
-
Aspergillus niger

pH Range

pH Minimum pH Maximum Comment Organism
3 7
-
Aspergillus niger