Reaction catalyzed by coproporphyrinogen oxidase (1.3.3.3)
+
2
NADP+
=
+
2
+
2
NADPH
+
2
coproporphyrinogen-III
+
2 NADP+
=
protoporphyrinogen-IX
+
2 CO2
+
2 NADPH
+
2 H+
