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Genetic element
(GENE)
published: 08 Jul 2009
last updated: 08 Feb 2013
Zeaxanthin epoxidase gene
EN
CS-zep
EN
Protein coding sequence
No
-
BCH-ORGA-SCBD-12106-6 Organism Solanum tuberosum (Potato, SOLTU)Crops
EN
Zeaxanthin epoxidase
EN
The ZEP protein (EC 1.14.13.90) catalyzes the epoxidation of zeaxanthin to violaxanthin. Violaxanthin serves as a precursor molecule for many carotenoids, such as the phytohormone abscisic acid.
The reaction mediated by ZEP can serve as a photoprotective mechanism in higher plants and some green algae to prevent the generation of reactive oxygen species during photosynthesis. Thus violaxanthin and zeaxanthin act as buffers against excessive light irradiation.
Inhibition of zeaxanthin epoxidase leads to a build-up of zeaxanthin.
EN
The reaction mediated by ZEP can serve as a photoprotective mechanism in higher plants and some green algae to prevent the generation of reactive oxygen species during photosynthesis. Thus violaxanthin and zeaxanthin act as buffers against excessive light irradiation.
Inhibition of zeaxanthin epoxidase leads to a build-up of zeaxanthin.
EN
- Xanthophyll Biosynthesis.pdf [ English ]
- Zeaxanthin accumulation in the absence of a functional xanthophyll cycle protects Chlamydomonas reinhardtii from photooxidative stress.pdf [ English ]
- Complex regulation of ABA biosynthesis in plants.pdf [ English ]
- Analysis of xanthophyll cycle gene expression during the adaptation of Arabidopsis to excess light and drought stress: Changes in RNA steady-state levels do not contribute to short-term responses [ English ]
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