Term Name: heme oxygenase (decyclizing) activity
Synonyms: haem oxidase activity, haem oxygenase (decyclizing) activity, haem oxygenase activity, heme oxidase activity, heme oxygenase activity, heme,hydrogen-donor:oxygen oxidoreductase (alpha-methene-oxidizing, hydroxylating), ORP33 proteins
Definition: Catalysis of the reaction: heme b + 3 O2 + 3 reduced [NADPH-hemoprotein reductase] = biliverdin + CO + Fe2+ + H+ + 3 H2O + 3 oxidized [NADPH-hemoprotein reductase].
Ontology: GO: Molecular Function [GO:0004392]    QuickGO    AmiGO

Relationships
is a type of: oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen