Which one of the following enzymes contains 'Haem' as the prosthetic group?

Question

Which one of the following enzymes contains 'Haem' as the prosthetic group?

1. A. RuBisCo
2. B. Carbonic anhydrase
3. C. Succinate dehydrogenase
4. D. Catalase (Correct answer)

Correct Answer

Option D — Catalase

Detailed Solution & Explanation

The correct answer is Catalase.

Key Points

• In catalase (and peroxidase), which break down hydrogen peroxide into water and oxygen, haem is the prosthetic group forming part of the active site.
• Carbonic anhydrase uses zinc as a cofactor; RuBisCO is the most abundant protein in the biosphere; succinate is the substrate of succinate dehydrogenase.