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| Haemoglobin (also spelled hemoglobin) is [[Iron|iron]] containing compund that binds to [[Oxygen|oxygen]] gas. It is found in the [[Red blood cells|red blood cells]] of vertebrates. It transports oxygen from the respiratory organ, the [[Lungs|lungs]], to the different cells of body. It is a [[Protein|protein]] that contains a quanternary structure made up of 4 sub-units. They consist of 2 alpha sub units and 2 beta subunits. Each subunit conatins a heme group which contains and iron [[Atom|atom]]. Each iron atom binds to 1 oxygen molecule. Thus 1 haemogobin molecule transports 8 atoms of oxygen. When absorbtion of oxygen occurs haemoglobin becomes [[Oxyheamoglobin|oxyhaemoglobin]] and it forms the reddish colour of the red blood cells. Upon arrival at a cell it deposits its oxygen thus allowing oxidization of glucose to take place via respiration. This releases energy in form of [[ATP|ATP]]. The waste product, [[Carbon dioxide|carbon dioxide]] is transported by heamoglobin to the lungs for expiration <ref>Berg, J. Stryer, L. Tymoczko J. (2012) Biochemistry, 7th Edition : W.H. Freeman and Company. Chapter 7, Page 203-207</ref>.
| | See [[Haemoglobin]] |
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| === Reference ===
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| <references /><br><br>
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Latest revision as of 06:09, 22 October 2015