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Literature summary for 1.23.5.1 extracted from
- Xanthophyll cycle enzymes are members of the lipocalin family, the first identified from plants (1998), J. Biol. Chem., 273, 15321-15324.
Natural Substrates/ Products (Substrates)
| Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| antheraxanthin + ascorbate | Arabidopsis thaliana | violaxanthin de-epoxidase and zeaxanthin epoxidase catalyze the addition and removal of epoxide groups in carotenoids of xanthophyll cycle in plants. The xanthophyll cycle is implicated in protecting the photosynthetoic apparatus from excessive light | zeaxanthin + dehydroascorbate + H2O | - |
? |  |
| antheraxanthin + ascorbate | Nicotiana tabacum | violaxanthin de-epoxidase and zeaxanthin epoxidase catalyze the addition and removal of epoxide groups in carotenoids of xanthophyll cycle in plants. The xanthophyll cycle is implicated in protecting the photosynthetoic apparatus from excessive light | zeaxanthin + dehydroascorbate + H2O | - |
? | |
| violaxanthin + ascorbate | Arabidopsis thaliana | violaxanthin de-epoxidase and zeaxanthin epoxidase catalyze the addition and removal of epoxide groups in carotenoids of xanthophyll cycle in plants. The xanthophyll cycle is implicated in protecting the photosynthetic apparatus from excessive light | antheraxanthin + dehydroascorbate + H2O | - |
? | |
| violaxanthin + ascorbate | Nicotiana tabacum | violaxanthin de-epoxidase and zeaxanthin epoxidase catalyze the addition and removal of epoxide groups in carotenoids of xanthophyll cycle in plants. The xanthophyll cycle is implicated in protecting the photosynthetic apparatus from excessive light | antheraxanthin + dehydroascorbate + H2O | - |
? | |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Arabidopsis thaliana | Q39249 | - |
- |
| Nicotiana tabacum | Q40593 | cv. Xanthi | - |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| antheraxanthin + ascorbate | violaxanthin de-epoxidase and zeaxanthin epoxidase catalyze the addition and removal of epoxide groups in carotenoids of xanthophyll cycle in plants. The xanthophyll cycle is implicated in protecting the photosynthetoic apparatus from excessive light | Arabidopsis thaliana | zeaxanthin + dehydroascorbate + H2O | - |
? | |
| antheraxanthin + ascorbate | violaxanthin de-epoxidase and zeaxanthin epoxidase catalyze the addition and removal of epoxide groups in carotenoids of xanthophyll cycle in plants. The xanthophyll cycle is implicated in protecting the photosynthetoic apparatus from excessive light | Nicotiana tabacum | zeaxanthin + dehydroascorbate + H2O | - |
? | |
| violaxanthin + ascorbate | violaxanthin de-epoxidase and zeaxanthin epoxidase catalyze the addition and removal of epoxide groups in carotenoids of xanthophyll cycle in plants. The xanthophyll cycle is implicated in protecting the photosynthetic apparatus from excessive light | Arabidopsis thaliana | antheraxanthin + dehydroascorbate + H2O | - |
? | |
| violaxanthin + ascorbate | violaxanthin de-epoxidase and zeaxanthin epoxidase catalyze the addition and removal of epoxide groups in carotenoids of xanthophyll cycle in plants. The xanthophyll cycle is implicated in protecting the photosynthetic apparatus from excessive light | Nicotiana tabacum | antheraxanthin + dehydroascorbate + H2O | - |
? | |
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