Research

Sir Hans is best known for his discovery of the Glyoxylate Cycle, a metabolic route that effects the net conversion of fatty acids to carbohydrates in many microorganisms and plant seeds, and for identifying (and coining the phrase) "anaplerotic sequences" in metabolism. He is currently studying the genetic control and biochemical mechanisms whereby fructose is utilized by E. coli.  
Sir Hans was Professor of Biochemistry in the University of Leicester (UK) from 1960 - 75, and in the University of Cambridge (UK) from 1975 - 95;  from 1982 - 95, he was also the 34th Master of Christ's College, Cambridge.

Career

• since 1995 University Professor & Professor of Biology, Boston University, USA
• 1975-1995 Professor of Biochemistry, Cambridge University, UK
• 1960-1975 Professor of Biochemistry, Leicester University, UK
• 1955-1960 Member of MRC Unit for Research in Cell Metabolism, Oxford, UK
• 1946-1953 Studium  an der Universität Sheffield, UK

Functions

• 1991-1994 President, International Union of Biochemistry &  Molecular Biology
• 1991-1992 President of the Association for Science Education
• 1990-1995 (First) President of The Biochemical Society
• 1978-1981 Vice-Chairman
• 1977-1990 Chairman of Scientific Advisory Board, Max-Planck-Institut für Ernährungsphysiologie, Dortmund (FRG)
• 1977-1981 Member of Council of European Molecular Biology Organisation (EMBO)
• 1975-1977 Member of Council, The Royal Society  

Honours and Memberships

• 1997 Foreign Member, Accademia Nazionale dei Lincei
• 1995 Honorary Member, Phi Beta Kappa
• 1993 Foreign Member, American Philosophical Society        
• 1992 Fellow, American Academy of Microbiology
• 1990 Honorary Fellow, Wolfson College, Cambridge
• 1989 Honorary Fellow, Royal College of Physicians of London        
• 1989 Member, Academia Europaea
• 1987 Foreign Honorary Member, American Academy of Arts and Sciences
• 1986 Foreign Associate, National Academy of Sciences, USA
• 1982 Member, German Academy of Sciences Leopoldina
• 1982 Honorary Fellow, Brasenose College, Oxford
• 1981 Honorary Member, Japanese Biochemical Society
• 1980 Honorary Fellow, Worcester College, Oxford
• 1978 Appointed Knight Bachelor
• since 1974 D.Sc. Cincinnati, Warwick, Sheffield, Leeds, LaTrobe; D.U. Essex; Dr. med. Leipzig; LL.D. Dundee
• 1973 Otto Warburg Medal, Society for Biochemistry and Molecular Biology (GBM), Germany
• 1972 Honorary Member, American Society of Biological Chemists; Fellow of the Royal Society of Arts
• 1965 Fellow of the Institute of Biology and of the Royal Society
• 1963 Colworth Medal of the Biochemical Society, UK