Zeaxanthin 7,8-dioxygenase
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 1.14.99.42 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| |||||||||
Zeaxanthin 7,8-dioxygenase acts twice on zeaxanthin cleaving 3-hydroxycyclocitral off each 3-hydroxy end group.
References
- 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.
External links
- Zeaxanthin+7,8-dioxygenase at the US National Library of Medicine Medical Subject Headings (MeSH)
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