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Literature summary extracted from

  • Latowski, D.; Goss, R.; Bojko, M.; Strzałka, K.
    Violaxanthin and diadinoxanthin de-epoxidation in various model lipid systems (2012), Acta Biochim. Pol., 59, 101-103.
    View publication on PubMed

Activating Compound

EC Number Activating Compound Comment Organism Structure
1.23.5.1 additional information effect of fluidity of hydrophobic fraction of inverted micelles composed of different types of lipids on enzyme activity, best activation by monogalactosyldiacylglycerol Triticum aestivum

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
1.23.5.1 thylakoid
-
Triticum aestivum 9579
-
1.23.5.1 thylakoid a water soluble lumenal enzyme, change in enzyme conformation is accompanied by the functional binding of the enzymes to the thylakoid membrane, where the substrate violaxanthin is located Triticum aestivum 9579
-

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
1.23.5.1 antheraxanthin + L-ascorbate Triticum aestivum
-
zeaxanthin + L-dehydroascorbate + H2O
-
?
1.23.5.1 violaxanthin + L-ascorbate Triticum aestivum
-
antheraxanthin + L-dehydroascorbate + H2O
-
?

Organism

EC Number Organism UniProt Comment Textmining
1.23.5.1 Triticum aestivum
-
-
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.23.5.1 antheraxanthin + L-ascorbate
-
Triticum aestivum zeaxanthin + L-dehydroascorbate + H2O
-
?
1.23.5.1 violaxanthin + L-ascorbate
-
Triticum aestivum antheraxanthin + L-dehydroascorbate + H2O
-
?

Synonyms

EC Number Synonyms Comment Organism
1.23.5.1 VDE
-
Triticum aestivum
1.23.5.1 violaxanthin de-epoxidase
-
Triticum aestivum

General Information

EC Number General Information Comment Organism
1.23.5.1 evolution the violaxanthin cycle: under strong light conditions, enzyme violaxanthin de-epoxidase catalyses de-epoxidation of violaxanthin (Vx) to zeaxanthin via antheraxanthin as an intermediate product. This type of the cycle exists in higher plants, ferns, mosses and some group of algae Triticum aestivum
1.23.5.1 metabolism the xanthophyll cycle is an important photoprotective process functioning in plants. One of its forms, the violaxanthin cycle, involves interconversion between violaxanthin, antheraxanthin, and zeaxanthin Triticum aestivum
1.23.5.1 physiological function VDE is a water soluble lumenal protein that undergoes a conformational change when pH drops due to formation of the light-driven proton gradient across the thylakoid membrane. The change in enzyme conformation is accompanied by the functional binding of the enzymes to the thylakoid membrane, where the substrate violaxanthin is located Triticum aestivum