9-cis-epoxycarotenoid dioxygenase activity
Catalysis of the reactions: a 9-cis-epoxycarotenoid + O2 = 2-cis,4-trans-xanthoxin + a 12'-apo-carotenal; 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.
GO:0010436
carotenoid dioxygenase activity
is_a
9-cis-epoxycarotenoid 11,12-dioxygenase activity
related
AtNCED3
related
NCED
related
PvNCED1
related
VP14
related
neoxanthin cleavage enzyme
related
nine-cis-epoxycarotenoid dioxygenase activity
related