Walker, Sir John Ernest

Walker, Sir John Ernest, 1941–, English biochemist, Ph.D. Oxford, 1969. He has been a researcher at the Medical Research Council Laboratory of Molecular Biology in Cambridge since 1974. In 1997 Walker was awarded the Nobel Prize in Chemistry with Paul Boyer and Jens Skou . Boyer and Walker did pioneering work on the enzyme that participates in the formation of adenosine triphosphate (ATP), a molecule that transports energy in cells. Walker determined the sequence of amino acids that make up the protein units of ATP and clarified the enzyme's three-dimensional structure. He was knighted in 1999.

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