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ENZYME entry: EC 1.14.13.90

Accepted Name
Zeaxanthin epoxidase.
Alternative Name(s)
Zea-epoxidase.
Reaction catalysed
Zeaxanthin + 2 NAD(P)H + 2 O(2) <=> violaxanthin + 2 NAD(P)(+) + 2 H(2)O
Cofactor(s)
FAD.
Comment(s)
  • Active under conditions of low light.
  • Along with EC 1.10.99.3, this enzyme forms part of the xanthophyll (or violaxanthin) cycle, which is involved in protecting the plant against damage by excess light.
  • It will also epoxidize lutein in some higher-plant species.
Cross-references
BRENDA1.14.13.90
EC2PDB1.14.13.90
ExplorEnz1.14.13.90
PRIAM enzyme-specific profiles1.14.13.90
KEGG Ligand Database for Enzyme Nomenclature1.14.13.90
IUBMB Enzyme Nomenclature1.14.13.90
IntEnz1.14.13.90
MEDLINEFind literature relating to 1.14.13.90
MetaCyc1.14.13.90
UniProtKB/Swiss-Prot
Q96375, ABA2_CAPAN;  Q40412, ABA2_NICPL;  O81360, ABA2_PRUAR;  
P93236, ABA2_SOLLC;  Q9FGC7, ZEP_ARATH;  C3VEQ2, ZEP_ONCHC;  
Q0JCU7, ZEP_ORYSJ;  

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