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Gene and DNA Sequence
Record information and status
Record ID
Date of creation
2009-07-08 11:23 UTC (german_bch@bvl.bund.de)
Date of last update
2013-02-08 16:15 UTC (dina.abdelhakim@cbd.int)
Date of publication
2013-02-08 16:15 UTC (dina.abdelhakim@cbd.int)

General information
Name of the gene or DNA sequence
Zeaxanthin epoxidase gene
Category of DNA sequence
  • Protein coding sequence
Is the gene / DNA sequence is a synthetic molecule?
Donor organism
Donor organism
Solanum tuberosum - Potato, SOLTU
Characteristics of the protein coding sequence
Name of the protein expressed by the coding sequence
Zeaxanthin epoxidase
Biological function
The ZEP protein (EC 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.
Related trait(s) or use(s) in biotechnology
  • Tolerance to abiotic stress

Records referencing this document (4)
4record(s) found
Country's Decision or any other Communication1 record
Modified Organism2 records
Risk Assessment1 record