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One of the proteins in our bodies, called myoglobin, is a vital factor in the biochemical reactions that fuel our everyday activities.

Encoded for by a gene on chromosome 22, myoglobin extracts oxygen from our red blood cells and stores it in our muscles -- helping to keep us moving. Prof Stephen Curry explains how the method they used to determine its structure back in 1958, called X-ray crystallography, has revolutionised the way that we study biology.

Special thanks to the Science Museum for letting us film with their model.

With thanks to BBSRC: http://bbsrc.ac.uk/

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