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Proteins- Haemoglobin and Collagen
Haemoglobin (Hb)

Haemoglobin has a quaternary structure made up of 4 separate polypeptide

2 identical -chains and 2 identical -chains.
Each polypeptide chain is folded/coiled into a compact
shape due to hydrophobic interactions between the
(hydrophobic) R-groups.
The Hydrophilic R-groups are arranged around the

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Collagen is made up of amino-acids, which are
built of carbon, oxygen and hydrogen.
Collagen contains specific amino acids ­ Glycine,
Proline, Hydroxyproline and Arginine.
Collagen is found in bones, skin, tendons,
cartilage, teeth, walls of blood vessels, and
Collagen is a part of the connective tissue that…

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