Reaction catalyzed by heme oxygenase (staphylobilin-producing) (1.14.99.48)
+
4
AH2
+
4
=
+
Fe2+
+
+
4
A
+
4
H2O
protoheme
+
4 AH2
+
4 O2
=
5-oxo-delta-bilirubin
+
Fe2+
+
CO
+
4 A
+
4 H2O