Activating Compound | Comment | Organism | Structure |
---|---|---|---|
2-mercaptoethanol | - |
Penicillium sclerotiorum | |
dithiothreitol | - |
Penicillium sclerotiorum | |
Pb(CH3COO)2 | activates xylanase II and inhibits xylanase I at 10 mM | Penicillium sclerotiorum | |
PMSF | activates xylanase I, inhibits xylanase II | Penicillium sclerotiorum | |
Sodium citrate | activates | Penicillium sclerotiorum |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
Co2+ | complete inhibition of xylanase II at 10 mM, 50% at 2 mM, no inhibition of xylanase I | Penicillium sclerotiorum | |
Cu2+ | strong inhibition of xylanase I and xylanase II | Penicillium sclerotiorum | |
EDTA | inhibition of xylanase I and xylanase II | Penicillium sclerotiorum | |
Hg2+ | strong inhibition of xylanase I and xylanase II | Penicillium sclerotiorum | |
NH4Cl | activates xylanase I, inhibits xylanase II | Penicillium sclerotiorum | |
Pb(CH3COO)2 | activates xylanase II and inhibits xylanase I at 10 mM | Penicillium sclerotiorum | |
PMSF | activates xylanase I, inhibits xylanase II | Penicillium sclerotiorum | |
SDS | strong inhibition of xylanase I and xylanase II, complete inhibition at 2 mM and 10 mM, respectively | Penicillium sclerotiorum | |
Zn2+ | inhibition of xylanase I and xylanase II | Penicillium sclerotiorum |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
additional information | - |
additional information | kinetics of isozymes xylanase I and xylanase II | Penicillium sclerotiorum |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
extracellular | - |
Penicillium sclerotiorum | - |
- |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Ba2+ | activates xylanase I by 10-16% at 2-10 mM | Penicillium sclerotiorum | |
Ca2+ | activates both isozyme by about 20% at 2-10 mM | Penicillium sclerotiorum | |
Mn2+ | activates xylanase II by 2.25fold | Penicillium sclerotiorum | |
additional information | no effect by NaCl and MgSO4 at 10 mM | Penicillium sclerotiorum | |
NH4Cl | activates xylanase I, inhibits xylanase II | Penicillium sclerotiorum |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
23800 | - |
xylanase I, gel filtration | Penicillium sclerotiorum |
23900 | - |
1 * 23900, xylanase I, SDS-PAGE, 1 * 33100, xylanase II, SDS-PAGE | Penicillium sclerotiorum |
30800 | - |
xylanase II, gel filtration | Penicillium sclerotiorum |
33100 | - |
1 * 23900, xylanase I, SDS-PAGE, 1 * 33100, xylanase II, SDS-PAGE | Penicillium sclerotiorum |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
beta-1,4-xylan + H2O | Penicillium sclerotiorum | - |
? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Penicillium sclerotiorum | - |
isozymes xylanase I and II | - |
Posttranslational Modification | Comment | Organism |
---|---|---|
glycoprotein | xylanase I and xylanase II | Penicillium sclerotiorum |
Purification (Comment) | Organism |
---|---|
native xylanase I and xylanase II 2.4-2.5fold by anion exchange chromatography and gel filtration to homogeneity | Penicillium sclerotiorum |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
240.9 | - |
purified isozyme xylanase II | Penicillium sclerotiorum |
249.1 | - |
purified isozyme xylanase I | Penicillium sclerotiorum |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
beta-1,4-xylan + H2O | - |
Penicillium sclerotiorum | ? | - |
? | |
beta-1,4-xylan + H2O | the enzyme cleaves the internal beta-1,4-bonds in the xylan backbone at non-modified residues, yielding different chain-length-substituted xylooligosaccharides | Penicillium sclerotiorum | ? | - |
? | |
additional information | specificities of xylanases against birchwood xylan, oat spelt xylan, carboxymethylcellulose, Overview | Penicillium sclerotiorum | ? | - |
? |
Subunits | Comment | Organism |
---|---|---|
monomer | 1 * 23900, xylanase I, SDS-PAGE, 1 * 33100, xylanase II, SDS-PAGE | Penicillium sclerotiorum |
Synonyms | Comment | Organism |
---|---|---|
endo-beta-(1,4)-xylanase | - |
Penicillium sclerotiorum |
xylanase I | - |
Penicillium sclerotiorum |
xylanase II | - |
Penicillium sclerotiorum |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
50 | - |
xylanase I | Penicillium sclerotiorum |
55 | - |
xylanase II | Penicillium sclerotiorum |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
45 | - |
half-life of both isozymes is about 210 min | Penicillium sclerotiorum |
50 | - |
half-life of both isozymes is about 80 min | Penicillium sclerotiorum |
55 | - |
half-life of both isozymes is 50 min | Penicillium sclerotiorum |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
2.5 | - |
xylanase I | Penicillium sclerotiorum |
4.5 | - |
xylanase II | Penicillium sclerotiorum |
pH Minimum | pH Maximum | Comment | Organism |
---|---|---|---|
1.5 | 6.5 | activity range, 80% of maximal activity by xylanase I at pH 1.6 and pH 3.0, inactive at pH 7.0, profile, overview | Penicillium sclerotiorum |
2.5 | 7.5 | activity range, 60% of maximal activity by xylanase II at pH 3.5 and pH 7.0, 25% at pH 2.5, profile, overview | Penicillium sclerotiorum |
General Information | Comment | Organism |
---|---|---|
metabolism | key enzyme in beta-1,4-xylan degradation, which involves several hydrolases, overview | Penicillium sclerotiorum |