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Literature summary extracted from

  • Toh, S.; Imamura, A.; Watanabe, A.; Nakabayashi, K.; Okamoto, M.; Jikumaru, Y.; Hanada, A.; Aso, Y.; Ishiyama, K.; Tamura, N.; Iuchi, S.; Kobayashi, M.; Yamaguchi, S.; Kamiya, Y.; Nambara, E.; Kawakami, N.
    High temperature-induced abscisic acid biosynthesis and its role in the inhibition of gibberellin action in Arabidopsis seeds (2008), Plant Physiol., 146, 1368-1385.
    View publication on PubMedView publication on EuropePMC

Activating Compound

EC Number Activating Compound Comment Organism Structure
1.14.15.21 additional information up-regulation of the zeaxanthin epoxidase gene ABA1/ZEP at higher temperatures leads to increased abscisic acid production, overview Arabidopsis thaliana

Cloned(Commentary)

EC Number Cloned (Comment) Organism
1.14.15.21 gene ABA1/ZEP, expression analysis Arabidopsis thaliana

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 Arabidopsis thaliana
-
 violaxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
 ?
1.14.15.21 additional information Arabidopsis thaliana up-regulation of the zeaxanthin epoxidase gene ABA1/ZEP and three 9-cis-epoxycarotenoid dioxygenase genes, NCED2, NCED5, and NCED9 is responsible for suppression of seed germination at supraoptimal high temperature, thermoinhibitIon, during summer to establish vegetative and reproductive growth in appropriate seasons of Arabidopsis thaliana, abscisic acid and gibberellins play a role in the regulation of germination, overview ?
-
 ?
1.14.15.21 zeaxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 Arabidopsis thaliana
-
 antheraxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
1.13.11.51 Arabidopsis thaliana O49505 9-cis-epoxycarotenoid dioxygenase NCED2, chloroplastic, precursor
-
1.13.11.51 Arabidopsis thaliana Q9C6Z1
-
-
1.13.11.51 Arabidopsis thaliana Q9M9F5
-
-
1.14.15.21 Arabidopsis thaliana
-
 cv. Col-0, gene ABA1/ZEP
-

Source Tissue

EC Number Source Tissue Comment Organism Textmining
1.13.11.51 seed imbibed. NCED2 plays a minor role in high temperature-induced abscisic acid synthesis and germination inhibition Arabidopsis thaliana
-
1.13.11.51 seed imbibed. NCED5 plays a minor role in high temperature-induced abscisic acid synthesis and germination inhibition Arabidopsis thaliana
-
1.13.11.51 seed imbibed. NCED9 plays a major role in high temperature-induced abscisic acid synthesis and germination inhibition Arabidopsis thaliana
-
1.14.15.21 seed
-
 Arabidopsis thaliana
-

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
-
 Arabidopsis thaliana violaxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
 ?
1.14.15.21 additional information up-regulation of the zeaxanthin epoxidase gene ABA1/ZEP and three 9-cis-epoxycarotenoid dioxygenase genes, NCED2, NCED5, and NCED9 is responsible for suppression of seed germination at supraoptimal high temperature, thermoinhibitIon, during summer to establish vegetative and reproductive growth in appropriate seasons of Arabidopsis thaliana, abscisic acid and gibberellins play a role in the regulation of germination, overview Arabidopsis thaliana ?
-
 ?
1.14.15.21 zeaxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2
-
 Arabidopsis thaliana antheraxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
 ?

Synonyms

EC Number Synonyms Comment Organism
1.13.11.51 NCED2
-
 Arabidopsis thaliana
1.13.11.51 NCED5
-
 Arabidopsis thaliana
1.13.11.51 NCED9
-
 Arabidopsis thaliana

Cofactor

EC Number Cofactor Comment Organism Structure
1.14.15.21 NADPH
-
 Arabidopsis thaliana