ID   1.14.15.9
DE   spheroidene monooxygenase.
AN   2-oxo-spirilloxanthin monooxygenase.
AN   acyclic carotenoid 2-ketolase.
AN   spirilloxanthin monooxygenase.
CA   (1) spheroidene + 4 reduced [2Fe-2S]-[ferredoxin] + 2 O2 + 4 H(+) =
CA   spheroiden-2-one + 4 oxidized [2Fe-2S]-[ferredoxin] + 3 H2O.
CA   (2) spirilloxanthin + 4 reduced [2Fe-2S]-[ferredoxin] + 2 O2 + 4 H(+) =
CA   2-oxospirilloxanthin + 4 oxidized [2Fe-2S]-[ferredoxin] + 3 H2O.
CA   (3) 2-oxospirilloxanthin + 4 reduced [2Fe-2S]-[ferredoxin] + 2 O2 +
CA   4 H(+) = 2,2'-dioxospirilloxanthin + 4 oxidized [2Fe-2S]-[ferredoxin] +
CA   3 H2O.
CC   -!- The enzyme is involved in spheroidenone biosynthesis and in
CC       2,2'-dioxospirilloxanthin biosynthesis.
CC   -!- The enzyme from Rhodobacter sphaeroides contains heme at its active
CC       site.
DR   Q3J189, CRTA_CERS4 ;  P17055, CRTA_RHOCB ;  Q83YH3, CRTA_RUBGE ;
//