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1.23.5.1: violaxanthin de-epoxidase

This is an abbreviated version!
For detailed information about violaxanthin de-epoxidase, go to the full flat file.

Word Map on EC 1.23.5.1

Reaction

antheraxanthin
+
L-ascorbate
=
zeaxanthin
 +
L-dehydroascorbate
 +
H2O

Synonyms

AhVDE, CsVDE, EC 1.10.99.3, lipocalin-like protein, NPQ1, VDE, Vio de-epoxidase, violaxanthin de-epoxidase, Vx de-epoxidase, ZmVDE1

ECTree

     1 Oxidoreductases
         1.23 Reducing C-O-C group as acceptor
             1.23.5 With a quinone or similar compound as acceptor
                1.23.5.1 violaxanthin de-epoxidase

Expression

Expression on EC 1.23.5.1 - violaxanthin de-epoxidase

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EXPRESSION
ORGANISM
UNIPROT
LITERATURE
activities of GUS driven by the CsVDE promoter fragments are increased when plants are exposed to high light for 4 h, but decreased by 8 h illumination. The high light responsive elements are defined in two positions. The normal-level light-responsive elements are also found in different regions
chilling conditions reduce the activity of the enzyme
CsVDE is quickly induced by cold and drought stress
-
enzyme activation is triggered by a pH reduction in the thylakoids lumen occurring under saturating light
-
expression is pregulated under high light conditions
the expression levels of cucumber violaxanthin de-epoxidase (CsVDE) can be regulated by high light, drought and cold stresses, response of the CsVDE promoter to high light and to normal light
the expression of AhVDE is obviously upregulated by 4°C, 40°C and high light, NaCl, and abscisic acid. De-epoxidation ratio of the xanthophylls cycle pigments in transgenic tobacco is significantly increased during heat and high light stress
VDE activity increases in greenhouse (0.15-2 mM/m2/s), shade (0.6-0.8 mN/m2/s) and sun (1.2-2.2 mM/m2/s) grown plants after one day of sun exposure as compared to prior to transfer to direct sunlight
-