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ENZYME entry: EC

Accepted Name
Heme oxygenase (biliverdin-producing, ferredoxin).
Reaction catalysed
Protoheme + 6 reduced ferredoxin [iron-sulfur] cluster + 3 O(2) + 6 H(+) <=> biliverdin + Fe(2+) + CO + 6 oxidized ferredoxin [iron-sulfur] cluster + 3 H(2)O
  • The enzyme, found in plants, algae, and cyanobacteria, participates in the biosynthesis of phytochromobilin and phytobilins.
  • The terminal oxygen atoms that are incorporated into the carbonyl groups of pyrrole rings A and B of biliverdin are derived from two separate oxygen molecules.
  • The third oxygen molecule provides the oxygen atom that converts the alpha-carbon to CO.
  • Unlike this enzyme, which uses ferredoxin as its electron donor, the electron source for the related mammalian enzyme (EC is EC
PRIAM enzyme-specific profiles1.14.15.20
KEGG Ligand Database for Enzyme Nomenclature1.14.15.20
IUBMB Enzyme Nomenclature1.14.15.20
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