Hans Krebs

Sir Hans Adolf Krebs (, ; 25 August 1900 – 22 November 1981) was a German Jewish scientist who became a naturalised British citizen. He was a physician and biochemist.

Krebs researched metabolism. He is famous because he discovered the urea cycle and the citric acid cycle (also called the Krebs Cycle). Krebs won the Nobel Prize in Physiology or Medicine for this, in 1953.

Early years
Krebs was born in Hildesheim, Germany. His mother was Alma Davidson. His father was Georg Krebs. Georg Krebs was an ear, nose, and throat doctor. 

Education
Krebs studied medicine at the University of Göttingen and the University of Freiburg from 1918–1923. He earned his Ph.D. at the University of Hamburg in 1925. Next, he studied chemistry in Berlin for one year. In Berlin, he helped Otto Warburg at the Kaiser Wilhelm Institute for Biology until 1930.

Career
Krebs worked as a doctor  in the Altona hospital and at the University of Freiburg. At the University of Freiburg he researched the urea cycle.

Because he was Jewish, Krebs could not be a doctor in Germany. In 1933 he moved to England. He worked at Cambridge with Sir Frederick Gowland Hopkins. In Cambridge he researched biochemistry. In 1945 he became a Professor (teacher) at the University of Sheffield.

In 1954 he became a professor in Oxford. After his retirement, Krebs continued work at the Radcliffe Infirmary until his death. He was a fellow of Trinity College in Oxford.

Honors
In 1953 Krebs received the Nobel Prize in Physiology for his "discovery of the citric acid cycle".Biography - Hans Adolf Krebs  Nobel Prize He was knighted in 1958. 

Krebs was elected Honorary Fellow of Girton College, Cambridge University in 1979.

Personal life 
In 1938, Krebs married Margaret Cicely Fieldhouse. They had three children: two boys and a girl: John, Paul and Helen. His son John Krebs was an ornithologist and member of the House of Lords. 

Krebs died in Oxford, England in 1981.*Plaque to Krebs on his Iffley home  Oxfordshire Blue Plaques

Timeline
1900 Born in Germany
1918 Began medical school
1923 Graduated from medical school
1925 Graduated with Ph.D. from University of Hamburg
1932 Identification of Urea cycle
1933 Moved to the United Kingdom
1937 Identification of Citric acid cycle or "Krebs cycle"
1945 Became a Professor at University of Sheffield
1953 Won the Nobel Prize
1958 Knighted
1981 Died in Oxford, England 

References

Category:1900 births
Category:1981 deaths
Category:British biochemists
Category:British Nobel Prize winners
Category:Fellows of the Royal Society
Category:German biochemists
Category:German doctors
Category:Jewish British academics
Category:Jewish British scientists
Category:Jewish German scientists
Category:Jewish Nobel Prize winners
Category:Knights Bachelor
Category:Naturalised citizens of the United Kingdom
Category:Nobel Prize in Physiology or Medicine winners