EC 1.14.15.21 - Zeaxanthin epoxidase

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ENZYME: 1.14.15.21


ID   1.14.15.21
DE   Zeaxanthin epoxidase.
AN   Zea-epoxidase.
CA   Zeaxanthin + 4 reduced ferredoxin (iron-sulfur) cluster + 4 H(+) + 2 O(2)
CA   = violaxanthin + 4 oxidized ferredoxin (iron-sulfur) cluster + 2 H(2)O.
CF   FAD.
CC   -!- Active under conditions of low light.
CC   -!- Along with EC 1.23.5.1, this enzyme forms part of the xanthophyll (or
CC       violaxanthin) cycle, which is involved in protecting the plant
CC       against damage by excess light.
CC   -!- It will also epoxidize lutein in some higher-plant species.
CC   -!- Formerly EC 1.14.13.90.
DR   Q96375    , ABA2_CAPAN ;  Q40412    , ABA2_NICPL ;  O81360    , ABA2_PRUAR ;
DR   P93236    , ABA2_SOLLC ;  A0A0K9RDW0, ABA2_SPIOL ;  Q9FGC7-2  , ZEP-2_ARATH;
DR   Q9FGC7    , ZEP_ARATH  ;  C3VEQ2    , ZEP_ONCHC  ;  Q0JCU7    , ZEP_ORYSJ  ;
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