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Collagen and Haemoglobin Collagen is a fibrous protein that is found in the skin, tendons and cartilage. It is one of the most important structural proteins and is found in almost all animals. It is also found in the human body and about one quarter of all of the protein in your body is collagen. Adding mineral crystals to collagen makes bones and teeth. Collagen provides structure to our bodies, protecting and supporting the softer tissues and connecting them with the skeleton. But, in spite of its critical function in the body, collagen is a relatively simple protein. A collagen molecule consists of three polypeptide chains, each in the shape of a helix. This is not however, an alpha helix as the three chains are not tightly bound together. Collagen is made mostly out of glycine. Glycine is the simplest residual group out of the twenty just containing one hydrogen atom. This...

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