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Literature summary for 3.2.1.8 extracted from

  • Frederick, M.M.; Kiang, C.H.; Frederick, J.R.; Reilly, P.J.
    Purification and characterization of endo-xylanases from Aspergillus niger. I. Two isozymes active on xylan backbones near branch points (1985), Biotechnol. Bioeng., 27, 525-532.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
Al3+ 70 mM, xylanase I and II Aspergillus niger
Co2+ 70 mM, xylanase I and II Aspergillus niger
Cr3+ 70 mM, xylanase I and II Aspergillus niger
Cu2+ 70 mM, xylanase I and II Aspergillus niger
Fe3+ 70 mM, xylanase I and II Aspergillus niger
Hg2+ 0.07 mM, xylanase I and II Aspergillus niger

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
12000
-
xylanase I, gel filtration Aspergillus niger
13500 14000 xylanase II, gel filtration Aspergillus niger

Organism

Organism UniProt Comment Textmining
Aspergillus niger
-
-
-

Purification (Commentary)

Purification (Comment) Organism
xylanase I and II Aspergillus niger

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1,4-beta-D-xylan + H2O hydrolyzes soluble xylan more rapidly than insoluble branched xylan Aspergillus niger additional information
-
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Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
45
-
xylanase I and II Aspergillus niger

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.5
-
xylanase II Aspergillus niger
6
-
xylanase I Aspergillus niger

pH Stability

pH Stability pH Stability Maximum Comment Organism
5
-
60°C, xylanase I, most stable at, half-life: 20 min Aspergillus niger
6
-
60°C, xylanase II, most stable at, half-life: 75 min Aspergillus niger