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Information on EC 1.3.99.39 - carotenoid phi-ring synthase

for references in articles please use BRENDA:EC1.3.99.39

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IUBMB Comments

The enzyme, found in green sulfur bacteria, some cyanobacteria and some actinobacteria, introduces additional double bonds to the carotenoid β-end group, leading to aromatization of the ionone ring. As a result, one of the methyl groups at C-1 is transferred to position C-2. It is involved in the biosynthesis of carotenoids with φ-type aromatic end groups such as chlorobactene, β-isorenieratene, and isorenieratene.

The enzyme appears in viruses and cellular organisms

Synonyms
crtU, CT0323, gamma-carotene desaturase, more

REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
carotenoid beta-end group + 2 acceptor = carotenoid phi-end group + 2 reduced acceptor
show the reaction diagram
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PATHWAY SOURCE
PATHWAYS
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