What Oxidized Heme Protein Does Not Reversibly Bind Oxygen

Question

What oxidized heme protein does not reversibly bind oxygen?
A) metmyoglobin
B) oxyhemoglobin
C) carboxyhemoglobin
D) leghemoglobin
E) None of the answers is correct.

Accepted Answer

Metmyoglobin is an oxidized form of myoglobin that does not reversibly bind oxygen, unlike the other options listed which are involved in oxygen transport or storage in some capacity.