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Literature summary extracted from
- 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.
Inhibitors
| EC Number | Inhibitors | Comment | Organism | Structure |
|---|---|---|---|---|
| 3.2.1.8 | Al3+ | 70 mM, xylanase I and II | Aspergillus niger |  |
| 3.2.1.8 | Co2+ | 70 mM, xylanase I and II | Aspergillus niger | |
| 3.2.1.8 | Cr3+ | 70 mM, xylanase I and II | Aspergillus niger | |
| 3.2.1.8 | Cu2+ | 70 mM, xylanase I and II | Aspergillus niger | |
| 3.2.1.8 | Fe3+ | 70 mM, xylanase I and II | Aspergillus niger | |
| 3.2.1.8 | Hg2+ | 0.07 mM, xylanase I and II | Aspergillus niger | |
Molecular Weight [Da]
| EC Number | Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|---|
| 3.2.1.8 | 12000 | - |
xylanase I, gel filtration | Aspergillus niger |
| 3.2.1.8 | 13500 | 14000 | xylanase II, gel filtration | Aspergillus niger |
Organism
| EC Number | Organism | UniProt | Comment | Textmining |
|---|---|---|---|---|
| 3.2.1.8 | Aspergillus niger | - |
- |
- |
Purification (Commentary)
| EC Number | Purification (Comment) | Organism |
|---|---|---|
| 3.2.1.8 | xylanase I and II | Aspergillus niger |
Substrates and Products (Substrate)
| EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|---|
| 3.2.1.8 | 1,4-beta-D-xylan + H2O | hydrolyzes soluble xylan more rapidly than insoluble branched xylan | Aspergillus niger | additional information | - |
? | |
Temperature Optimum [°C]
| EC Number | Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
|---|---|---|---|---|
| 3.2.1.8 | 45 | - |
xylanase I and II | Aspergillus niger |
pH Optimum
| EC Number | pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|---|
| 3.2.1.8 | 5.5 | - |
xylanase II | Aspergillus niger |
| 3.2.1.8 | 6 | - |
xylanase I | Aspergillus niger |
pH Stability
| EC Number | pH Stability | pH Stability Maximum | Comment | Organism |
|---|---|---|---|---|
| 3.2.1.8 | 5 | - |
60°C, xylanase I, most stable at, half-life: 20 min | Aspergillus niger |
| 3.2.1.8 | 6 | - |
60°C, xylanase II, most stable at, half-life: 75 min | Aspergillus niger |
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