Assertion: american biochemist | /r/HasProperty | arthur kornberg
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text: Severo Ochoa, (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.