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Encyclopedia > Johann Deisenhofer

Johann Deisenhofer (born September 30, 1943) is a German biochemist who, along with Hartmut Michel and Robert Huber, received the Nobel Prize for Chemistry in 1988 for their determination of the structure of a membrane-bound complex of proteins and co-factors that is essential to photosynthesis. is the 273rd day of the year (274th in leap years) in the Gregorian calendar. ... Year 1943 (MCMXLIII) was a common year starting on Friday (the link will display full 1943 calendar) of the Gregorian calendar. ... A biochemist is a scientist trained and dedicated to producing results in the discipline of biochemistry. ... Hartmut Michel is a German biochemist and Nobel Laureate. ... Robert Huber is a German biochemist and Nobel laureate. ... The Nobel Prize (Swedish: ), as designated in Alfred Nobels will in 1895, is awarded in Physics, Chemistry, Physiology or Medicine, Literature, and Peace. ... For other uses, see Chemistry (disambiguation). ... Year 1988 (MCMLXXXVIII) was a leap year starting on Friday (link displays 1988 Gregorian calendar). ... The leaf is the primary site of photosynthesis in plants. ...


Deisenhofer earned his doctorate from the Technical University Munich for research work done at the Max Planck Institute for Biochemistry in Martinsried, West Germany, in 1974. He conducted research there until 1988, when he joined the scientific staff of the Howard Hughes Medical Institute and the faculty of The University of Texas Southwestern Medical Center at Dallas. The Max-Planck-Gesellschaft zur Förderung der Wissenschaften e. ... A suburb of Munich, Germany, about 15 km south-west from the city center. ... The Howard Hughes Medical Institute (HHMI) is a United States non-profit medical research institute based in Chevy Chase, Maryland and originally founded by the aviator and engineer Howard Hughes in 1953. ... The University of Texas Southwestern Medical Center at Dallas (also known as “Southwestern”) is one of the leading medical research facilities in the United States. ...


Together with Michel and Huber, Deisenhofer determined the three-dimensional structure of a protein complex found in certain photosynthetic bacteria. This membrane protein complex, called a photosynthetic reaction center, was known to play a crucial role in initiating a simple type of photosynthesis. Between 1982 and 1985, the three scientists used X-ray crystallography to determine the exact arrangement of the more than 10,000 atoms that make up the protein complex. Their research increased the general understanding of the mechanisms of photosynthesis and revealed similarities between the photosynthetic processes of plants and bacteria.[1] In the process of photosynthesis, light is absorbed by a photosystem (ancient Greek: phos = light and systema = assembly) to begin an energy-producing reaction. ... X-ray crystallography, also known as single-crystal X-ray diffraction, is the oldest and most common crystallographic method for determining the structure of molecules. ...


Deisenhofer currently serves on the board of advisors of Scientists and Engineers for America, an organization focused on promoting sound science in American government. Scientists and Engineers for America (SEA) is an organization focused on promoting sound science in American government, and supporting candidates who understand science and its applications. ...


External links

  • Autobiographical information at www.nobel.org

References

  1. ^ J. Deisenhofer, O. Epp, K. Miki, R. Huber & H. Michel (1985). "Structure of the protein subunits in the photosynthetic reaction centre of Rhodopseudomonas viridis at 3Å resolution" 318 (6047): 618-624. doi:10.1038/318618a0. 

  Results from FactBites:
 
Johann Deisenhofer, Ph.D. (692 words)
Deisenhofer and his team also are working to understand how alterations in the amino acid sequence in critical regions of the LDL receptor might cause familial hypercholesterolemia, a common inherited disease marked by high cholesterol levels, atherosclerosis, and increased risk of heart attack early in life.
Deisenhofer is also Regental Professor and Professor of Biochemistry and holds the Virginia and Edward Linthicum Distinguished Chair in Biomolecular Science at the University of Texas Southwestern Medical Center at Dallas.
Johann Deisenhofer and his colleagues determine and study the three-dimensional structures of proteins to understand their folding, structural stability, and function.
Scientists and Engineers for America (290 words)
Johann Deisenhofer is Regental Professor and Professor in Biochemistry, and holds the Virginia and Edward Linthicum Distinguished Chair in Biomolecular Science at the University of Texas Southwestern Medical Center at Dallas; he is also Investigator in the Howard Hughes Medical Institute.
Deisenhofer is a Member of the National Academy of Sciences of the USA, the Academia Europaea, the German Academy of Natural Scientists Leopoldina, and the Texas Academy of Science, Engineering, and Medicine.
Johann Deisenhofer was born in Germany in 1943.
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