ENZYME

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A new class EC 7, Translocases, has been added to the EC list. It will be part of ENZYME from release 2018_10. Read more about EC 7 here.

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

Spheroidene + 4 reduced ferredoxin [iron-sulfur] cluster + 2 O(2) + 4 H(+) <=> spheroiden-2-one + 4 oxidized ferredoxin [iron-sulfur] cluster + 3 H(2)O
Spirilloxanthin + 4 reduced ferredoxin [iron-sulfur] cluster + 2 O(2) + 4 H(+) <=> 2-oxospirilloxanthin + 4 oxidized ferredoxin [iron-sulfur] cluster + 3 H(2)O
2-oxospirilloxanthin + 4 reduced ferredoxin [iron-sulfur] cluster + 2 O(2) + 4 H(+) <=> 2,2'-dioxospirilloxanthin + 4 oxidized ferredoxin [iron-sulfur] cluster + 3 H(2)O

Cofactor(s)

Heme.

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