Proteins Red hunting B1.3 - Explain how the structure of collagen and haemoglobin are related to their function.

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Proteins Red hunting B1.3 - Explain how the structure of collagen and haemoglobin are related to their function.

Collagen – Structure Fibrous protein - Cross-linking and staggered covalent bonds. 3 individual polypeptides or strings of amino acids. The strands wind around one another in an alpha-helix. The helix forms because of the regular amino acid sequence of the strands.

Collagen - Function Connective and supportive structures of the body. It is found in particularly high amounts in tissues that need to be strong, flexible or both, including cartilage, bones and tendons. Collagen can allow a tissue to withstand immense pulling pressure without stretching It can also be elastic, as in skin, and flexible, as in a tendon bending around a joint.

Haemoglobin - Structure Globular protein Quaternary structure (multiple protein chai ns linked together to form a greater functional unit which also includes inorganic molecules). Iron in the centre of heme group 4 subunits 2 alpha, 2 beta chains

Haemoglobin - Function Haemoglobin's function is the transport of oxygen around the body. Oxygen binds to Iron in the heme group of each subunit

Explain the role of ionic, hydrogen and disulphide bonding in the structure of proteins.