Myoglobin (Mb) & Hemoglobin (Hb)

Proteins that are involved in STORAGE (Mb) and TRANSPORT (Hb) of oxygen.

Function:-

• To transport O₂ From lung to tissue via blood.
• The function of Hb & Mb are to bind oxygen when its concentration Or partial pressure is relatively high and the release it where it is needed, meaning its concentration or partial pressure is relatively low.

Hb has 2 states                                                                                                       

A) Oxy-hemoglobin (4 O₂ Bound)                                                                                                               B) Deoxy Hemoglobin(No O₂ Bound)

• Bisphosphoglycerate (BPG) is synthesized by red blood cells
• It is tightly bound to deoxyHb & weakly to oxyHb
• Ex.It used when O₂ Concentration is low in Atmosphere for ex. During climbing mountain.