Severo Ochoa Biography

Quick Facts

NAME: Severo Ochoa de Albornoz
OCCUPATION: Academic, Chemist
BIRTH DATE: September 24, 1905
DEATH DATE: November 01, 1993
EDUCATION: University of Madrid, University of Heidelberg

PLACE OF BIRTH: Luarca, Asturias, Spain
PLACE OF DEATH: Madrid, Spain

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Best Known For

Severo Ochoa was co-awarded the 1959 Nobel Prize in Physiology or Medicine for discovering an enzyme in bacteria that enables the synthesis of RNA.

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Severa Ochoa

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Synopsis

Severo Ochoa was a Spanish-born U.S. scientist. After studying at the University of Madrid, he spent two years studying muscles. He later immigrated to the U.S. and worked in pharmacology. In 1959, he was awarded the Nobel Prize in Physiology or Medicine for discovering an enzyme that enables the synthesis of RNA, enabling scientists to recreate the cell process which translates hereditary genes.

Profile

(born Sept. 24, 1905, Luarca, Spain—died Nov. 1, 1993, Madrid) biochemist and molecular biologist who received (with the American biochemist Arthur Kornberg) the 1959 Nobel Prize for Physiology or Medicine for discovery of an enzyme in bacteria that enabled him to synthesize ribonucleic acid (RNA), a substance of central importance to the synthesis of proteins by the cell.

Ochoa was educated at the University of Madrid, where he received his M.D. in 1929. He then spent two years studying the biochemistry and physiology of muscle under the German biochemist Otto Meyerhof at the University of Heidelberg. He also served as head of the physiology division, Institute for Medical Research, at the University of Madrid (1935). He investigated the function in the body of thiamine (vitamin B₁) at the University of Oxford (1938–41) and became a research associate in medicine (1942) and professor of pharmacology (1946) at New York University, New York City, where he became professor of biochemistry and chairman of the department in 1954. From 1974 to 1985 he was associated with the Roche Institute of Molecular Biology; thereafter he taught at the Autonomous University of Madrid. Ochoa became a U.S. citizen in 1956.

Ochoa made the discovery for which he received the Nobel Prize in 1955, while conducting research on high-energy phosphates. He named the enzyme he discovered polynucleotide phosphorylase. It was subsequently determined that the enzyme's function is to degrade RNA, not synthesize it; under test-tube conditions, however, it runs its natural reaction in reverse. The enzyme has been singularly valuable in enabling scientists to understand and re-create the process whereby the hereditary information contained in genes is translated, through RNA intermediaries, into enzymes that determine the functions and character of each cell.