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Literature summary for 3.1.1.72 extracted from
- Distinct roles of carbohydrate esterase family CE16 acetyl esterases and polymer-acting acetyl xylan esterases in xylan deacetylation (2013), J. Biotechnol., 168, 684-692.
Activating Compound
| Activating Compound | Comment | Organism | Structure |
|---|---|---|---|
| additional information | acetyl esterases activate the enzyme | Trichoderma reesei | |
| additional information | the enzyme is not activated by acetyl esterases | Aspergillus niger |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Aspergillus niger | - |
- |
- |
| Thermothelomyces thermophilus | - |
- |
- |
| Trichoderma reesei | - |
- |
- |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| hardwood acetyl glucuronoxylan | mode of action, substrate specifiicity, and role of the family CE1 enzyme during deacetylation of soluble natural substrates, i.e. neutral and acidic O-acetylated xylooligosaccharides | Thermothelomyces thermophilus | ? | - |
? |  |
| hardwood acetyl glucuronoxylan | the enzyme can act on di-O-acetylated Xylp residues, but may have different activities towards the O-2- and O-3-linked acetyl groups, since the content of monoacetylated Xylp units is high after enzyme action. Mode of action, substrate specifiicity, and role of the family CE5 enzyme during deacetylation of soluble natural substrates, i.e. neutral and acidic O-acetylated xylooligosac-charides, overview | Trichoderma reesei | ? | - |
? | |
| hardwood acetyl glucuronoxylan | the enzyme from Aspergillus niger is highly active compared to other acetylxylan esterases independently of the degree of polymerisation of the substrate. Mode of action, substrate specificity, and role of the family CE1 enzyme during deacetylation of soluble natural substrates, i.e. neutral and acidic O-acetylated xylooligosaccharides | Aspergillus niger | ? | - |
? | |
| additional information | combined action of acetyl esterases and acetylxylan esterases enhances deacetylation activity | Aspergillus niger | ? | - |
? | |
| additional information | combined action of acetyl esterases and acetylxylan esterases enhances deacetylation activity | Thermothelomyces thermophilus | ? | - |
? | |
| additional information | the enzyme acts independently of the degree of polymerisation of the substrate. Combined action of acetyl esterases and acetylxylan esterases enhances deacetylation activity | Trichoderma reesei | ? | - |
? | |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| acetyl xylan esterase | - |
Aspergillus niger |
| acetyl xylan esterase | - |
Trichoderma reesei |
| acetyl xylan esterase | - |
Thermothelomyces thermophilus |
| AXE | - |
Aspergillus niger |
| AXE | - |
Trichoderma reesei |
| Axe3 | - |
Thermothelomyces thermophilus |
Temperature Optimum [°C]
| Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
|---|---|---|---|
| 40 | - |
assay at | Aspergillus niger |
| 40 | - |
assay at | Trichoderma reesei |
| 40 | - |
assay at | Thermothelomyces thermophilus |
pH Optimum
| pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|
| 5.5 | - |
assay at | Aspergillus niger |
| 5.5 | - |
assay at | Trichoderma reesei |
| 5.5 | - |
assay at | Thermothelomyces thermophilus |
General Information
| General Information | Comment | Organism |
|---|---|---|
| evolution | the enzyme belongs to the carbohydrate esterase family CE1 | Aspergillus niger |
| evolution | the enzyme belongs to the carbohydrate esterase family CE1 | Thermothelomyces thermophilus |
| evolution | the enzyme belongs to the carbohydrate esterase family CE5 | Trichoderma reesei |
| physiological function | acetylxylan esterases enhance the hydrolysis of O-acetylated xylan by removing the acetyl substituents that restrict the action of endo-1,4-beta-xylanases and beta-xylosidases | Aspergillus niger |
| physiological function | acetylxylan esterases enhance the hydrolysis of O-acetylated xylan by removing the acetyl substituents that restrict the action of endo-1,4-beta-xylanases and beta-xylosidases | Trichoderma reesei |
| physiological function | acetylxylan esterases enhance the hydrolysis of O-acetylated xylan by removing the acetyl substituents that restrict the action of endo-1,4-beta-xylanases and beta-xylosidases | Thermothelomyces thermophilus |
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