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Literature summary for 3.2.1.37 extracted from
- Studies on hemicellulases IV. Purification and properties of the beta-xylosidase produced by Aspergillus niger van Tieghem (1973), J. Biochem., 73, 335-343.
Localization
| Localization | Comment | Organism | GeneOntology No. | Textmining |
|---|---|---|---|---|
| extracellular | - |
Aspergillus niger | - |
- |
Natural Substrates/ Products (Substrates)
| Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| xylo-oligosaccharides + H2O | Aspergillus niger | decrease of activity with increasing polymerization of substrates | beta-D-xylose + ? | - |
? |  |
| xylobiose + H2O | Aspergillus niger | most rapidly hydrolyzed | beta-D-xylose + D-xylose | - |
? | |
| xylobiose + H2O | Aspergillus niger | transxylosylation activity | xylotriose + ? | - |
? | |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Aspergillus niger | - |
- |
- |
Purification (Commentary)
| Purification (Comment) | Organism |
|---|---|
| to homogeneity by 3step chromatography | Aspergillus niger |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|
| cell culture | - |
Aspergillus niger | - |
Specific Activity [micromol/min/mg]
| Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
|---|---|---|---|
| 4.2 | - |
- |
Aspergillus niger |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| 3 xylotriose | transxylosylation activity | Aspergillus niger | xylotetraose + xylopentaose | - |
? | |
| phenyl beta-D-xylopyranoside + H2O | - |
Aspergillus niger | phenol + beta-D-xylopyranose | - |
? | |
| xylo-oligosaccharides + H2O | decrease of activity with increasing polymerization of substrates | Aspergillus niger | beta-D-xylose + ? | - |
? | |
| xylobiose + H2O | most rapidly hydrolyzed | Aspergillus niger | beta-D-xylose + D-xylose | - |
? | |
| xylobiose + H2O | transxylosylation activity | Aspergillus niger | xylotriose + ? | - |
? | |
| xylobiosylxylitol + H2O | - |
Aspergillus niger | xylose + xylitol | - |
? | |
| xylopentaose + H2O | - |
Aspergillus niger | beta-D-xylose + ? | - |
? | |
| xylosylxylitol + H2O | - |
Aspergillus niger | xylose + xylitol | - |
? | |
| xylotetraose + H2O | - |
Aspergillus niger | xylotriose + beta-D-xylose | - |
? | |
| xylotriose + H2O | - |
Aspergillus niger | beta-D-xylose + xylobiose | - |
? | |
pH Optimum
| pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|
| 3 | 4 | - |
Aspergillus niger |
pH Stability
| pH Stability | pH Stability Maximum | Comment | Organism |
|---|---|---|---|
| 4 | 7 | stable at 30°C for 24 h, at 70°C for 15 min | Aspergillus niger |
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