Spheroidene monooxygenase (EC 1.14.15.9, CrtA, acyclic carotenoid 2-ketolase, spirilloxantin monooxygenase, 2-oxo-spirilloxanthin monooxygenase) is an enzyme with systematic name spheroidene, reduced-ferredoxin:oxygen oxidoreductase (spheroiden-2-one-forming).[1][2] This enzyme catalyses the following chemical reaction
| Spheroidene monooxygenase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 1.14.15.9 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| |||||||||
- spheroidene + reduced ferredoxin + O2 spheroiden-2-one + oxidized ferredoxin + H2O
- spirilloxantin + reduced ferredoxin + O2 2-oxospirilloxanthin + oxidized ferredoxin + H2O
- 2'-oxospirilloxanthin + reduced ferredoxin + O2 2,2'-dioxospirilloxanthin + oxidized ferredoxin + H2O
The enzyme is involved in spheroidenone biosynthesis and in 2,2'-dioxospirilloxanthin biosynthesis.
References
edit- ^ Lee PC, Holtzapple E, Schmidt-Dannert C (November 2010). "Novel activity of Rhodobacter sphaeroides spheroidene monooxygenase CrtA expressed in Escherichia coli". Applied and Environmental Microbiology. 76 (21): 7328–31. doi:10.1128/AEM.01606-10. PMC 2976243. PMID 20851979.
- ^ Gerjets T, Steiger S, Sandmann G (February 2009). "Catalytic properties of the expressed acyclic carotenoid 2-ketolases from Rhodobacter capsulatus and Rubrivivax gelatinosus". Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids. 1791 (2): 125–31. doi:10.1016/j.bbalip.2008.12.006. PMID 19136077.
External links
edit- Spheroidene+monooxygenase at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
