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Literature summary extracted from
- Regulation, purification, and properties of xylanase from Cellulomonas fimi (1993), Enzyme Microb. Technol., 15, 990-995.
No PubMed abstract available
Activating Compound
| EC Number | Activating Compound | Comment | Organism | Structure |
|---|---|---|---|---|
| 3.2.1.8 | maltose | stimulates xylanase A | Cellulomonas fimi |  |
Inhibitors
| EC Number | Inhibitors | Comment | Organism | Structure |
|---|---|---|---|---|
| 3.2.1.8 | 2-deoxyglucose | - |
Cellulomonas fimi | |
| 3.2.1.8 | Ca2+ | inactivation of xylanase B and C, slight inactivation of xylanase A | Cellulomonas fimi | |
| 3.2.1.8 | cellobiose | - |
Cellulomonas fimi | |
| 3.2.1.8 | Cu2+ | inactivation of xylanase B and C, low inactivation of xylanase A | Cellulomonas fimi | |
| 3.2.1.8 | D-glucose | - |
Cellulomonas fimi | |
| 3.2.1.8 | Fe2+ | marked inactivation of xylanase A, B and C | Cellulomonas fimi | |
| 3.2.1.8 | Hg2+ | HgCl2, xylanase A, B and C | Cellulomonas fimi | |
| 3.2.1.8 | iodoacetate | xylanase A, B and C | Cellulomonas fimi | |
| 3.2.1.8 | maltose | xylanase B | Cellulomonas fimi | |
| 3.2.1.8 | NEM | xylanase A, B and C | Cellulomonas fimi | |
| 3.2.1.8 | xylose | - |
Cellulomonas fimi | |
KM Value [mM]
| EC Number | KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|---|
| 3.2.1.8 | additional information | - |
additional information | - |
Cellulomonas fimi |
Molecular Weight [Da]
| EC Number | Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|---|
| 3.2.1.8 | 13200 | - |
xylanase A, gel filtration | Cellulomonas fimi |
| 3.2.1.8 | 22000 | - |
xylanase B, gel filtration | Cellulomonas fimi |
| 3.2.1.8 | 150000 | - |
xylanase C, gel filtration | Cellulomonas fimi |
Natural Substrates/ Products (Substrates)
| EC Number | Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|---|
| 3.2.1.8 | 1,4-beta-D-xylan + H2O | Cellulomonas fimi | catabolite repression occurs when glucose, cellobiose, and other readily metabolizable substrates are added during growth on carboxymethylcellulose | ? | - |
? | |
Organism
| EC Number | Organism | UniProt | Comment | Textmining |
|---|---|---|---|---|
| 3.2.1.8 | Cellulomonas fimi | - |
- |
- |
Purification (Commentary)
| EC Number | Purification (Comment) | Organism |
|---|---|---|
| 3.2.1.8 | xylanase A, B, and C | Cellulomonas fimi |
Specific Activity [micromol/min/mg]
| EC Number | Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
|---|---|---|---|---|
| 3.2.1.8 | 2.38 | - |
xylanase B | Cellulomonas fimi |
| 3.2.1.8 | 2.43 | - |
xylanase A | Cellulomonas fimi |
| 3.2.1.8 | 31.3 | - |
xylanase C | Cellulomonas fimi |
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 | catabolite repression occurs when glucose, cellobiose, and other readily metabolizable substrates are added during growth on carboxymethylcellulose | Cellulomonas fimi | ? | - |
? | |
Temperature Optimum [°C]
| EC Number | Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
|---|---|---|---|---|
| 3.2.1.8 | 40 | - |
xylanase B and C | Cellulomonas fimi |
| 3.2.1.8 | 45 | - |
xylanase A | Cellulomonas fimi |
pH Optimum
| EC Number | pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|---|
| 3.2.1.8 | 5 | - |
xylanase A | Cellulomonas fimi |
| 3.2.1.8 | 5.5 | 6.5 | xylanase C | Cellulomonas fimi |
| 3.2.1.8 | 6 | - |
xylanase B | Cellulomonas fimi |
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