James B. Sumner,American biochemist

Numéro d’image : 11831046
James B. Sumner,American biochemist
Professor James Batcheller Sumner (1887-1955),American biochemist. Sumner lost the lower part of his left arm in a hunting accident at the age of 17. He specialised in chemistry at Harvard University and studied for a PhD in biochemistry under Professor Otto Folin at the Harvard Medical School. Folin advised Sumner to become a lawyer as he didn't believe a biochemist could succeed with only one arm,but Sumner persevered and in 1926 was appointed as a professor of biochemistry at the Cornell Medical School,New York. There he was to become the first to isolate an enzyme (urease) in pure crystalline form,work for which he was awarded a Nobel Prize in 1946
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