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Literature summary extracted from

  • Frey, A.; Boutin, J.P.; Sotta, B.; Mercier, R.; Marion-Poll, A.
    Regulation of carotenoid and ABA accumulation during the development and germination of Nicotiana plumbaginifolia seeds (2006), Planta, 224, 622-632.
    View publication on PubMed

Protein Variants

EC Number Protein Variants Comment Organism
1.14.15.21 additional information seed dormancy is impaired in mutants of conversion of zeaxanthin into violaxanthin by zeaxanthin epoxidase, seed dormancy is restored by the introduction of the Arabidopsis thaliana ZEP gene under the control of promoters inducing expression during later stages of seed development compared to wild type Nicotiana plumbaginifolia ZEP, and in dry and imbibed seeds, alterations in the timing and level of ZEP expression do not highly affect the temporal regulation of ABA accumulation in transgenic seeds, despite notable perturbations in xanthophyll accumulation, overview Nicotiana plumbaginifolia

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
1.14.15.21 antheraxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 Nicotiana plumbaginifolia
-
 violaxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
 ?
1.14.15.21 additional information Nicotiana plumbaginifolia the enzyme catalyses the epoxidation of zeaxanthin to antheraxanthin and violaxanthin, generating the epoxycarotenoid precursor of the abscisic acid biosynthetic pathway, but has no regulating function on abscisic acid synthesis, overview ?
-
 ?
1.14.15.21 zeaxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 Nicotiana plumbaginifolia
-
 antheraxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
1.14.15.21 Nicotiana plumbaginifolia
-
 cv. Viviani
-

Source Tissue

EC Number Source Tissue Comment Organism Textmining
1.14.15.21 seed maximal accumulation of xanthophylls occurrs at mid-development Nicotiana plumbaginifolia
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.14.15.21 antheraxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2
-
 Nicotiana plumbaginifolia violaxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
 ?
1.14.15.21 additional information the enzyme catalyses the epoxidation of zeaxanthin to antheraxanthin and violaxanthin, generating the epoxycarotenoid precursor of the abscisic acid biosynthetic pathway, but has no regulating function on abscisic acid synthesis, overview Nicotiana plumbaginifolia ?
-
 ?
1.14.15.21 zeaxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2
-
 Nicotiana plumbaginifolia antheraxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
 ?

Synonyms

EC Number Synonyms Comment Organism
1.14.15.21 ZEP
-
 Nicotiana plumbaginifolia

Cofactor

EC Number Cofactor Comment Organism Structure
1.14.15.21 NAD(P)H
-
 Nicotiana plumbaginifolia