Activating Compound | Comment | Organism | Structure |
---|---|---|---|
3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate | i.e. CHAPS, slight activation | Hordeum vulgare | |
Brij-35 | slight activation | Hordeum vulgare | |
additional information | enzyme requires detergents for activity | Hordeum vulgare | |
Triton X-100 | high activation at 0.5% | Hordeum vulgare | |
Triton X-102 | - |
Hordeum vulgare | |
Tween 20 | - |
Hordeum vulgare | |
Zwittergent 3-16 | - |
Hordeum vulgare |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
Al3+ | - |
Hordeum vulgare | |
Ca2+ | - |
Hordeum vulgare | |
Cu2+ | - |
Hordeum vulgare | |
Fe3+ | - |
Hordeum vulgare | |
Hg2+ | - |
Hordeum vulgare | |
n-octyl-beta-D-glucoside | 50% inhibition | Hordeum vulgare | |
sodium cholate | complete inhibition | Hordeum vulgare | |
sodium deoxycholate | complete inhibition | Hordeum vulgare | |
Zn2+ | - |
Hordeum vulgare |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
2.1 | - |
pyridylaminated beta-(1,4)-xylotriose | pH 6.8, 20°C | Hordeum vulgare |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
membrane | - |
Hordeum vulgare | 16020 | - |
microsome | - |
Hordeum vulgare | - |
- |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Mg2+ | enzyme requires Mg2+ or Mn2+ for activity, activates | Hordeum vulgare | |
Mn2+ | enzyme requires Mg2+ or Mn2+ for activity, high activation at 5 mM MnCl2 | Hordeum vulgare |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | Hordeum vulgare | metabolic flux control and alterations during light reduction | ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Hordeum vulgare | - |
- |
- |
Purification (Comment) | Organism |
---|---|
preparation of microsomal fraction | Hordeum vulgare |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
endosperm | enzyme activity varies according to developmental stage of the endosperm, overview | Hordeum vulgare | - |
additional information | no activity in mature seeds, no correlation between enzyme activity and xylan content in cell walls of different cultivars | Hordeum vulgare | - |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
0.000075 | 0.0004 | xylan polymers | Hordeum vulgare |
0.002 | - |
xyloseoligosaccharides | Hordeum vulgare |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | substrate specificity | Hordeum vulgare | ? | - |
? | |
additional information | metabolic flux control and alterations during light reduction | Hordeum vulgare | ? | - |
? | |
pyridylaminated beta-(1,4)-xylotriose + UDP-D-xylose | - |
Hordeum vulgare | pyridylaminated beta-(1,4)-xylotetraose + UDP | - |
? | |
UDP-D-xylose + (1,4-beta-D-xylan)7 | - |
Hordeum vulgare | UDP + (1,4-beta-D-xylan)8 | - |
? | |
UDP-D-xylose + (1,4-beta-D-xylan)8 | - |
Hordeum vulgare | UDP + (1,4-beta-D-xylan)9 | - |
? | |
UDP-D-xylose + (1,4-beta-D-xylan)9 | - |
Hordeum vulgare | UDP + (1,4-beta-D-xylan)10 | - |
? | |
UDP-D-xylose + (1,4-beta-D-xylan)n | substrate are e.g. higher xylooligosaccharide or xylans from different sources, chain elongation by formation of beta(1,4)-linkages, xylooligosaccharide substrates can be pyrimidylaminated or derivatized with 2-aminopyridine at their reducing ends and still serve as substrates, substrate can contain single 4-O-methyl-glucuronic acid residues | Hordeum vulgare | UDP + (1,4-beta-D-xylan)n+1 | - |
? | |
UDP-D-xylose + 4-O-methyl-glucuronoxylan | - |
Hordeum vulgare | UDP + ? | - |
? | |
UDP-D-xylose + arabinoxylan | - |
Hordeum vulgare | UDP + ? | - |
? |
Synonyms | Comment | Organism |
---|---|---|
beta-(1,4)-xylosyltransferase | - |
Hordeum vulgare |
XylTase | - |
Hordeum vulgare |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
20 | - |
- |
Hordeum vulgare |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
6.8 | - |
- |
Hordeum vulgare |