HAEMOGLOBIN Definition ➽ the red, oxygen carrying pigment in the RBCs of vertebrates is haemoglobin.Synthesis of haemoglobin requires the provision of nutrients e.g. proteins, vitamins, minerals (specially iron).
It consists of the protein globin (polypeptide) united with the pigment haem (heme). there are 4 haem to the one molecule of haemoglobin, contains 4 iron atoms and can carry 4 molecules (8 atoms) of oxygen. Haemoglobin reacts with oxygen very rapidly requiring less than 0.01 second. Similarly, deoxygenation of haemoglobin is also very rapid.
It consists of the protein globin (polypeptide) united with the pigment haem (heme). there are 4 haem to the one molecule of haemoglobin, contains 4 iron atoms and can carry 4 molecules (8 atoms) of oxygen. Haemoglobin reacts with oxygen very rapidly requiring less than 0.01 second. Similarly, deoxygenation of haemoglobin is also very rapid.
Molecular weight of haemoglobin is 68,000.
•Note - Approx. 0.3 gm of haemoglobin is destroyed and 0.3 gm synthesized every hour.
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