Miescher, Johann Friedrich


Miescher, Johann Friedrich
born Aug. 13, 1844, Basel, Switz.
died Aug. 26, 1895, Davos

Swiss biologist.

In 1869 he discovered a substance containing both phosphorus and nitrogen in the nuclei of white blood cells found in pus. The substance, first named nuclein because it seemed to come from cell nuclei, became known as nucleic acid after Miescher separated it into a protein and an acid component. He also was one of the earliest researchers to propose that it is the carbon dioxide concentration (rather than the oxygen concentration) in the blood that regulates breathing.

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▪ Swiss biochemist
born Aug. 13, 1844, Basel, Switz.
died Aug. 26, 1895, Davos

      Swiss student of cell metabolism and discoverer of nucleic acids (nucleic acid).

      In 1869, while working under Ernst Hoppe-Seyler at the University of Tübingen, Miescher discovered a substance containing both phosphorus and nitrogen in the nuclei of white blood cells found in pus. The substance, first named nuclein because it seemed to come from cell nuclei, became known as nucleic acid after 1874, when Miescher separated it into protein and acid components. It is now known as deoxyribonucleic acid ( DNA).

      Upon returning to Basel as a professor, Miescher found nucleic acid and protamine (a protein commonly associated with nucleic acids) in salmon spermatozoa. He was one of the earliest researchers to propose and to collect data supporting the hypothesis that it is the carbon dioxide concentration (rather than the oxygen concentration) in the blood that regulates breathing. In 1885 he founded Switzerland's first physiological institute.

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Universalium. 2010.

Look at other dictionaries:

  • Miescher , Johann Friedrich — (1844–1895) Swiss biochemist Miescher came from a distinguished scientific family from Basel in Switzerland: both his father, also called Johann Friedrich, and his uncle, Wilhelm His, held the chair of anatomy at the University of Basel. Miescher …   Scientists

  • Miescher, Johann Friedrich — (13 ago. 1844, Basilea, Suiza–26 ago. 1895, Davos). Biólogo suizo. En 1869 descubrió una sustancia que contiene fósforo y nitrógeno en el núcleo de los glóbulos blancos presentes en el pus. La sustancia, primero denominada nucleína, porque… …   Enciclopedia Universal

  • Friedrich Miescher — Friedrich Miescher …   Deutsch Wikipedia

  • Friedrich Miescher — Johann Friedrich Miescher, né le 13 août 1844 à Bâle et mort le 26 août 1895 fut un biologiste suisse. Il a découvert dans le noyau des cellules une substance riche en phosphate : la nucléine. Au XX …   Wikipédia en Français

  • Friedrich — /free drik/; Ger. /frddee drddikh/, n. a male given name. * * * (as used in expressions) Friedrich Leopold Baron von Hardenberg Baeyer Johann Friedrich Wilhelm Adolf von Beilstein Friedrich Konrad Benz Karl Friedrich Bernhardi Friedrich von… …   Universalium

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  • Johann — (as used in expressions) Johann Jakob Astor Bach, Johann Christian Bach, Johann Sebastian Baeyer, (Johann Friedrich Wilhelm) Adolf von Johann Heinrich Belter Bernstorff, Johann Heinrich, conde von Bodmer, Johann Georg Eck, Johann Johann Maier… …   Enciclopedia Universal

  • Friedrich (Vorname) — Friedrich ist ein deutscher männlicher Vorname. Für Personen mit dem Familiennamen Friedrich siehe Friedrich (Familienname). Zur weiblichen Form des Vornamens siehe Friederike. Inhaltsverzeichnis 1 Herkunft und Bedeutung 2 Namenstage 3 Varianten …   Deutsch Wikipedia

  • Friedrich — ist ein deutscher männlicher Vorname. Die weiblichen Form des Vornamens ist Friederike. Inhaltsverzeichnis 1 Herkunft und Bedeutung 2 Namenstage 3 Varianten 4 …   Deutsch Wikipedia


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