Biochemistry All of the following enzymes involved in heme synthesis are found in the mitochondria, EXCEPT: A Ferrochelatase B Protoporphyrinogen oxidase C Coproporphyrinogen oxidase D Uroporphyrinogen decarboxylase 💡 Explanation All of the following enzymes involved in heme synthesis are found in the mitochondria, EXCEPT: ✓ Correct Answer: D. Uroporphyrinogen decarboxylase