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Literature summary extracted from

  • Latowski, D.; Banas, A.K.; Strzaska, K.; Gabrys, H.
    Amino sugars - new inhibitors of zeaxanthin epoxidase, a violaxanthin cycle enzyme (2007), J. Plant Physiol., 164, 231-237.
    View publication on PubMed

Inhibitors

EC Number Inhibitors Comment Organism Structure
1.14.15.21 additional information no effect of sugars and amino sugars on violaxanthin de-epoxidase is observed, but epoxidation of zeaxanthin to violaxanthin is inhibited, incubation with amino sugars under a 6 d photoperiod enhances the inhibitory effect, zeaxanthin epoxidation is completely inhibited under such conditions, overview Lemna trisulca
1.23.5.1 additional information no inhibition by glucose, glucosamine, galactose, galactosamine, mannose and mannosamine at a concentration of 0.5% Lemna trisulca

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
1.14.15.21 additional information Lemna trisulca the enzyme is important in photoprotective mechanisms in higher plants ?
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
1.14.15.21 Lemna trisulca
-
-
-
1.23.5.1 Lemna trisulca
-
 duckweed
-

Reaction

EC Number Reaction Comment Organism Reaction ID
1.14.15.21 antheraxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 = violaxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O creation of an unstable carotenoid carbocation in the molecular mechanism of epoxidation Lemna trisulca
a
1.14.15.21 zeaxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 = antheraxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O creation of an unstable carotenoid carbocation in the molecular mechanism of epoxidation Lemna trisulca
a

Source Tissue

EC Number Source Tissue Comment Organism Textmining
1.14.15.21 leaf
-
 Lemna trisulca
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
1.14.15.21 additional information
-
-
 Lemna trisulca

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.14.15.21 additional information the enzyme is important in photoprotective mechanisms in higher plants Lemna trisulca ?
-
 ?
1.23.5.1 antheraxanthin + ascorbate
-
 Lemna trisulca zeaxanthin + dehydroascorbate + H2O
-
 ?
1.23.5.1 violaxanthin + ascorbate
-
 Lemna trisulca antheraxanthin + dehydroascorbate + H2O
-
 ?

Synonyms

EC Number Synonyms Comment Organism
1.14.15.21 violaxanthin cycle enzyme
-
 Lemna trisulca
1.23.5.1 VDE
-
 Lemna trisulca