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Literature summary extracted from

  • Schaller, S.; Wilhelm, C.; Strzalka, K.; Goss, R.
    Investigating the interaction between the violaxanthin cycle enzyme zeaxanthin epoxidase and the thylakoid membrane (2012), J. Photochem. Photobiol. B Biol., 114, 119-125.
    View publication on PubMed

General Stability

EC Number General Stability Organism
1.14.15.21 there is a slight increase of the enzyme activity after the treatment with freeze-thaw cycles at pH 7.5, while thylakoids frozen and thawed a pH 5.2 show a slight reduction of the enzyme activity Spinacia oleracea

Inhibitors

EC Number Inhibitors Comment Organism Structure
1.14.15.21 NaBr there is a decrease of enzyme activity to 21% of the activity of control thylakoids when incubated once with 2 M NaBr. A second treatment with 2 M NaBr leads to an almost complete inhibition of enzyme activity Spinacia oleracea
1.14.15.21 octylglucoside complete inhibition at 30 mM Spinacia oleracea

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
1.14.15.21 thylakoid membrane
-
Spinacia oleracea 42651
-

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 Spinacia oleracea
-
violaxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
?
1.14.15.21 zeaxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 Spinacia oleracea
-
antheraxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
?

Organism

EC Number Organism UniProt Comment Textmining
1.14.15.21 Spinacia oleracea
-
-
-

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
-
Spinacia oleracea violaxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
?
1.14.15.21 zeaxanthin + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2
-
Spinacia oleracea antheraxanthin + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
-
?

Synonyms

EC Number Synonyms Comment Organism
1.14.15.21 ZEP
-
Spinacia oleracea

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
1.14.15.21
-
4 there is a slight increase of the enzyme activity after the treatment with freeze-thaw cycles at pH 7.5, while thylakoids frozen and thawed a pH 5.2 show a slight reduction of the enzyme activity Spinacia oleracea

Cofactor

EC Number Cofactor Comment Organism Structure
1.14.15.21 FAD
-
Spinacia oleracea
1.14.15.21 NADH
-
Spinacia oleracea