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Zeaxanthin 7,8-dioxygenase

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Zeaxanthin 7,8-dioxygenase
Identifiers
EC no.1.14.99.42
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
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Zeaxanthin 7,8-dioxygenase (EC 1.14.99.42, zeaxanthin 7,8(7',8')-cleavage dioxygenase, CsZCD) is an enzyme with systematic name zeaxanthin:oxygen oxidoreductase (7,8-cleaving).[1] This enzyme catalyses the following chemical reaction

zeaxanthin + 2 O2 crocetin dialdehyde + 2 (3S)-3-hydroxycyclocitral

Zeaxanthin 7,8-dioxygenase acts twice on zeaxanthin cleaving 3-hydroxycyclocitral off each 3-hydroxy end group.

References

  1. ^ Bouvier F, Suire C, Mutterer J, Camara B (January 2003). "Oxidative remodeling of chromoplast carotenoids: identification of the carotenoid dioxygenase CsCCD and CsZCD genes involved in Crocus secondary metabolite biogenesis". The Plant Cell. 15 (1): 47–62. doi:10.1105/tpc.006536. PMC 143450. PMID 12509521.