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Nobel Prizes and Laureates

Nobel Prizes and Laureates

The Nobel Prize in Chemistry 1980
Paul Berg, Walter Gilbert, Frederick Sanger

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Walter Gilbert - Facts

Walter Gilbert

Walter Gilbert

Born: 21 March 1932, Boston, MA, USA

Affiliation at the time of the award: Harvard University, Biological Laboratories, Cambridge, MA, USA

Prize motivation: "for their contributions concerning the determination of base sequences in nucleic acids"

Field: biochemistry

Prize share: 1/4

Work

An organism's genome is stored in the form of long rows of building blocks, known as nucleotides, which form DNA molecules. An organism's genome can be mapped by establishing the order of the nucleotides within the DNA molecule. In 1976, Allan Maxam and Walter Gilbert developed a method by which the ends of the DNA molecule could be marked using radioactive substances. After undergoing treatment with small amounts of chemicals that react with specific nucleotides, DNA fragments of varying lengths can be obtained. After undergoing what is known as electrophoresis, the nucleotide sequences in a DNA sample can be identified.

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