Cloned (Comment) | Organism |
---|---|
- |
Populus tomentosa |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.5 | - |
L-ascorbate | pH 7.0, temperature not specified in the publication | Populus tomentosa | |
3.43 | - |
H2O2 | pH 7.0, temperature not specified in the publication | Populus tomentosa |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
cytosol | - |
Populus tomentosa | 5829 | - |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Populus tomentosa | U5RZT9 | - |
- |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
leaf | expression levels are higher in leaves than in roots or stems | Populus tomentosa | - |
root | expression levels are higher in leaves than in roots or stems | Populus tomentosa | - |
stem | expression levels are higher in leaves than in roots or stems | Populus tomentosa | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
2 L-ascorbate + H2O2 + 2 H+ | - |
Populus tomentosa | L-ascorbate + L-dehydroascorbate + 2 H2O | - |
? |
Subunits | Comment | Organism |
---|---|---|
? | x * 33240, calculated, x * 33000, SDS-PAGE | Populus tomentosa |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
45 | - |
- |
Populus tomentosa |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
29.7 | - |
H2O2 | pH 7.0, temperature not specified in the publication | Populus tomentosa | |
49.6 | - |
L-ascorbate | pH 7.0, temperature not specified in the publication | Populus tomentosa |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
4.5 | 5 | - |
Populus tomentosa |
pH Minimum | pH Maximum | Comment | Organism |
---|---|---|---|
4 | - |
80% of maximum activity | Populus tomentosa |
7 | - |
25% of maximum activity | Populus tomentosa |
General Information | Comment | Organism |
---|---|---|
physiological function | transgenic tobacco plants overexpressing Apx show no significant difference in morphology under normal conditions. The transgenic plants are more resistant to drought, salt and oxidative stress conditions and show decreased H2O2 levels, increased ascorbate consumption, an increase in the NADP to NADPH ratio, and higher Apx activity | Populus tomentosa |
kcat/KM Value [1/mMs-1] | kcat/KM Value Maximum [1/mMs-1] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
14.5 | - |
L-ascorbate | pH 7.0, temperature not specified in the publication | Populus tomentosa | |
59.5 | - |
H2O2 | pH 7.0, temperature not specified in the publication | Populus tomentosa |