Born Aug. 25, 1900, in Hildesheim, Germany. British biochemist. Fellow of the London Royal Society (1947) and the National Academy of Sciences of the USA (1964). Of German nationality.

Krebs studied in Gottingen, Freiburg, Munich, and Berlin (1919–24); he worked with O. Warburg until 1930 and then in a clinic. He lectured at the University of Freiburg in 1932. In 1933 he left Germany and worked at Cambridge University (until 1935), Sheffield University (1935–54), and Oxford University (1954–67). Since 1967 he has been a professor at Queen’s Hospital in Oxford. Krebs made a valuable contribution on the formulation of the tricarboxylic acid cycle (the Krebs cycle). In 1932 he described the ornithine cycle involved in the synthesis of urea in the liver of animals. He received the Nobel Prize in 1953.