Which one of the following is non-heme protein?
Question and options
Which one of the following is non-heme protein?
- Hemoglobin
- Hemocyanin
- Myoglobin
- Cytochrome P-450
Answer and explanation
Correct answer: B - Hemocyanin
Hemocyanin carries oxygen using copper atoms bound directly to histidines, with no heme group. Haemoglobin, myoglobin and cytochrome P450 are heme proteins.
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