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Haemoglobin: Quaternary Structure

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The haemoglobin is an example of quaternary structure; it is a globular structure which is a type of a 3D of a tertiary structure. its function is to carry oxygen around in our cell and transport carbon dioxide to the lungs so haemoglobin has a concave shape which makes it easier to travel around the body.it is made of different types of amino acid in primary structure. Haemoglobin contains 4 polypeptide sub units 2 alpha (α) and 2 beta (β) chain which is a common secondary structure.it also has a prosthetic group (prosthetic group happens in quaternary where all the sub units are present), which is the haem group that mainly contains iron atom, the haem group gives the blood its colour. Haemoglobin is also created by DNA, when the structure

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