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Literature summary for 1.23.5.1 extracted from
- Influence of ascorbate and pH on the activity of the diatom xanthophyll cycle-enzyme diadinoxanthin de-epoxidase (2006), Physiol. Plant., 126, 205-211.
KM Value [mM]
| KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 2.3 | - |
ascorbate | at pH 5.0, with 0.0004 mM violaxanthin and 0.0116 mM monogalactosyldiacylglycerol in reaction medium containing 10 mM KCl, 5 mM MgCl2 and 40 mM morpholinoethanesulfonic acid | Spinacia oleracea |  |
Localization
| Localization | Comment | Organism | GeneOntology No. | Textmining |
|---|---|---|---|---|
| chloroplast thylakoid | - |
Spinacia oleracea | 9534 | - |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Spinacia oleracea | - |
- |
- |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|
| leaf | - |
Spinacia oleracea | - |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| antheraxanthin + ascorbate | - |
Spinacia oleracea | zeaxanthin + dehydroascorbate + H2O | - |
? | |
| violaxanthin + ascorbate | - |
Spinacia oleracea | antheraxanthin + dehydroascorbate + H2O | - |
? | |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| VDE | - |
Spinacia oleracea |
pH Optimum
| pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|
| 5 | 5.2 | irrespective of the presence of high or low ascorbate concentrations | Spinacia oleracea |
pH Stability
| pH Stability | pH Stability Maximum | Comment | Organism |
|---|---|---|---|
| 6.5 | - |
no activity above pH 6.5 | Spinacia oleracea |
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Release 2023.1 (January 2023)
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