(1900-1981) German-born British biochemist who discovered the citric acid cycle, also known as the Krebs cycle, the final pathway by which food molecules are converted into energy in living tissues. For this work he shared the 1953 Nobel Prize for Physiology or Medicine.
Krebs first became interested in the process by which the body degrades amino acids. He discovered that nitrogen atoms are the first to be removed (deamination) and are then excreted as urea in the urine. Krebs then investigated the processes involved in the production of urea from the removed nitrogen atoms, and by 1932 he had worked out the basic steps in the urea cycle.
Krebs was born in Hildesheim and studied at the the universities of Göttingen, Freiburg, Munich, Berlin, and Hamburg. In 1933, with the rise to power of the Nazis, he moved to the UK, initially to Cambridge and in 1935 to Sheffield. He was professor at Sheffield 1945–54, and at Oxford 1954–67.
City in Oklahoma (USA).