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Catalysis of the oxidative cleavage of carotenoids. Catalysis of the reactions: a 9-cis-epoxycarotenoid + O2 = 2-cis,4-trans-xanthoxin + a 12'-apo-carotenal and 9-cis-violaxanthin + O2 = 2-cis,4-trans-xanthoxin + (3S,5R,6S)-5,6-epoxy-3-hydroxy-5,6-dihydro-12'-apo-beta-caroten-12'-al and 9'-cis-neoxanthin + O2 = 2-cis,4-trans-xanthoxin + (3S,5R,6R)-5,6-dihydroxy-6,7-didehydro-5,6-dihydro-12'-apo-beta-caroten-12'-al. Catalysis of an oxidation-reduction (redox) reaction in which hydrogen or electrons are transferred from one donor, and two oxygen atoms is incorporated into a donor.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: 9-cis-epoxycarotenoid dioxygenase activity
Acc: GO:0045549
Aspect: Molecular Function
Desc: Catalysis of the reactions: a 9-cis-epoxycarotenoid + O2 = 2-cis,4-trans-xanthoxin + a 12'-apo-carotenal and 9-cis-violaxanthin + O2 = 2-cis,4-trans-xanthoxin + (3S,5R,6S)-5,6-epoxy-3-hydroxy-5,6-dihydro-12'-apo-beta-caroten-12'-al and 9'-cis-neoxanthin + O2 = 2-cis,4-trans-xanthoxin + (3S,5R,6R)-5,6-dihydroxy-6,7-didehydro-5,6-dihydro-12'-apo-beta-caroten-12'-al.
Synonyms:
  • NCED
  • VP14
  • neoxanthin cleavage enzyme
  • 9-cis-epoxycarotenoid 11,12-dioxygenase activity
  • AtNCED3
  • nine-cis-epoxycarotenoid dioxygenase activity
  • PvNCED1
Proteins in PDR annotated with:
   This term: 7 [Search]
   Term or descendants: 7 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0045549 - 9-cis-epoxycarotenoid dioxygenase activity (interactive image map)
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Created and Maintained by: Michael Riffle