Karl Stetter

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Karl Otto Stetter (born July 16, 1941 in Munich ) is a German microbiologist . He is an expert on microbiological life under extreme living conditions ( extremophile organisms ), especially at high temperatures.


Stetter passed his Abitur at the Staatliche Luitpold-Oberrealschule in Munich in 1960 and studied biology at the Technical University of Munich , graduating as a biologist in 1969. He wrote his doctoral thesis in microbiology on Lactobacillus at the Technical University of Munich, graduating as a Dr. rer. nat. (1973). After a postdoc (biochemistry) 1973–1975 at the Max Planck Institute for Biochemistry in Martinsried, he completed his habilitation in microbiology and botany at the Ludwig Maximilians University in Munich in 1977 . From 1980 to 2002 he was a full professor, holder of the chair for microbiology at the Faculty of Natural Sciences III and head of the Archaeological Center at the University of Regensburg . In 1994 he co-founded DIVERSA Corp., San Diego (later Verenium ). He has been retired since 2002.


Karl Stetter is married and has two daughters and a son, the actor Florian Stetter .


Stetter's research relates to collecting, isolating, cultivating and characterizing extremophiles . These microorganisms live under extreme living conditions (under low or high temperatures, high pressure, without oxygen, at low or high pH or high salt concentration). They can be found in the deep sea, in hydrothermal springs, in volcanoes or glaciers. Many belong to the archaea , the third domain of life. Stetter and his team worked intensively on Nanoarchaeum equitans ( the riding primeval dwarf ) with the smallest known genome . This archaebacterium, as the archaea were called earlier, is only 400 nm in size and lives on the surface of another archaeon ( Ignicoccus hospitalis ). This is one of his most important discoveries and was described in Nature in May 2002 . The genome sequence was published in 2003 in the Proceedings of the National Academy of Sciences .


honors and awards

Web links

Commons : Karl Stetter  - Collection of images, videos and audio files

Individual evidence

  1. ^ Member entry by Karl Stetter (with picture) at the German Academy of Natural Scientists Leopoldina , accessed on July 22, 2016.