Jack W. Szostak
The Nobel Prize in Physiology or Medicine 2009
Born: 9 November 1952, London, United Kingdom
Affiliation at the time of the award: Harvard Medical School, Boston, MA, USA, Massachusetts General Hospital, Boston, MA, USA, Howard Hughes Medical Institute
Prize motivation: "for the discovery of how chromosomes are protected by telomeres and the enzyme telomerase."
Prize share: 1/3
An organism's genes are stored within DNA molecules, which are found in chromosomes inside its cells' nuclei. When a cell divides, it is important that its chromosomes are copied in full, and that they are not damaged. At each end of a chromosome lies a "cap" or telomere, as it is known, which protects it. After Elizabeth Blackburn discovered that telomeres have a particular DNA, through experiments conducted on ciliates and yeast, she and Jack Szostak proved in 1982 that the telomeres' DNA prevents chromosomes from being broken down.
Their work and discoveries range from how cells adapt to changes in levels of oxygen to our ability to fight global poverty.
See them all presented here.