Protein Variants | Comment | Organism |
---|---|---|
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 | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
antheraxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 | Nicotiana plumbaginifolia | - |
violaxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O | - |
? | |
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 | ? | - |
? | |
zeaxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 | Nicotiana plumbaginifolia | - |
antheraxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Nicotiana plumbaginifolia | - |
cv. Viviani | - |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
seed | maximal accumulation of xanthophylls occurrs at mid-development | Nicotiana plumbaginifolia | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
antheraxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 | - |
Nicotiana plumbaginifolia | violaxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O | - |
? | |
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 | ? | - |
? | |
zeaxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 | - |
Nicotiana plumbaginifolia | antheraxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O | - |
? |
Synonyms | Comment | Organism |
---|---|---|
ZEP | - |
Nicotiana plumbaginifolia |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
NAD(P)H | - |
Nicotiana plumbaginifolia |