ENZYME entry: EC 1.14.15.9

Accepted Name

spheroidene monooxygenase

Alternative Name(s)

2-oxo-spirilloxanthin monooxygenase

acyclic carotenoid 2-ketolase

spirilloxanthin monooxygenase

Reaction catalysed

4 H(+) + 2 O2 + 4 reduced [2Fe-2S]-[ferredoxin] + spheroidene <=> 3 H2O + 4 oxidized [2Fe-2S]-[ferredoxin] + spheroiden-2-one
4 H(+) + 2 O2 + 4 reduced [2Fe-2S]-[ferredoxin] + spirilloxanthin <=> 2-oxospirilloxanthin + 3 H2O + 4 oxidized [2Fe-2S]-[ferredoxin]
2-oxospirilloxanthin + 4 H(+) + 2 O2 + 4 reduced [2Fe-2S]-[ferredoxin] <=> 2,2'-dioxospirilloxanthin + 3 H2O + 4 oxidized [2Fe-2S]-[ferredoxin]

Comment(s)

The enzyme is involved in spheroidenone biosynthesis and in 2,2'-dioxospirilloxanthin biosynthesis.
The enzyme from Rhodobacter sphaeroides contains heme at its active site.

Cross-references

BRENDA

EC2PDB

ExplorEnz

PRIAM enzyme-specific profiles

KEGG Ligand Database for Enzyme Nomenclature

IUBMB Enzyme Nomenclature

IntEnz

MEDLINE

MetaCyc

Rhea expert-curated reactions

UniProtKB/Swiss-Prot

P17055, CRTA_RHOCB

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 1.14.15.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 1.14.-.-
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