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Literature summary extracted from

  • Park, H.Y.; Seok, H.Y.; Park, B.K.; Kim, S.H.; Goh, C.H.; Lee, B.H.; Lee, C.H.; Moon, Y.H.
    Overexpression of Arabidopsis ZEP enhances tolerance to osmotic stress (2008), Biochem. Biophys. Res. Commun., 375, 80-85.
    View publication on PubMed

Protein Variants

EC Number Protein Variants Comment Organism
1.14.15.21 additional information transgenic Arabidopsis thaliana plants overexpressing the AtZEP gene exhibit more vigorous growth under high salt and drought treatments than wild-type plants. In addition to enhanced de novo abscisic acid biosynthesis, they also exhibit much higher expression of the endogenous stress-responsive genes RD29A and Rab18 than wild-type plants under salt stress, and the stomatal aperture of the AtZEP-overexpressing plants is smaller than wild-type plants after exposure to light, overview 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 the enzyme is important in the xanthophyll cycle and in abscisic acid biosynthesis, abscisic acid is a plant hormone and key molecule that regulates plant responses to abiotic stress, such as drought and salinity, and is required for stress tolerance, overexpression of ZEP leads to increased salt and rought tolerance in transgenic plants, 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
1.14.15.21 Arabidopsis thaliana
-
-
-

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
-
 zeaxanthin, antheraxanthin, and violaxanthin contents in wild-type and enzyme-overexpressing mutant plants, overview 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 the enzyme is important in the xanthophyll cycle and in abscisic acid biosynthesis, abscisic acid is a plant hormone and key molecule that regulates plant responses to abiotic stress, such as drought and salinity, and is required for stress tolerance, overexpression of ZEP leads to increased salt and rought tolerance in transgenic plants, 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
1.14.15.21 ZEP
-
 Arabidopsis thaliana

Cofactor

EC Number Cofactor Comment Organism Structure
1.14.15.21 NADPH
-
 Arabidopsis thaliana