Ishusiva26302017

Haemoglobin is a crucial oxygen-carrying protein found in red blood cells, composed of four polypeptide chains — two alpha and two beta — each containing a haem group with an iron atom capable of binding oxygen. This tetrameric structure allows haemoglobin to transport oxygen efficiently from the lungs to tissues, facilitated by cooperative binding, where the binding of one oxygen molecule increases the affinity for others through conformational shifts from a tense (T) state to a relaxed (R)...