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Zum Magnesium-Stoffwechsel von E. coli

Günther u. Hoffmann: Zum Magnesium-Stoffwechsel von E, coli Z. Klin. Chem. Klin. Biochem. 11. Jg. 1973, S. 237--242 Zum Magnesium-Stoffwechsel von JE. coli Von T. GÜNTHER und C. F. HOFFMANN Zentralinstitutfür Biochemie und Biophysik der Freien Universität Berlin (Eingegangen am 26. März/30. April 1973) · Herrn Professor Dr. Dr. E. Schütte %um 65. Geburtstag gewidmet Der Mg-Gehalt von E. coli steigt bei höherer extrazellulärer Mg-Konzentration infolge einer Mg-Bindung an die Zellmembran stark an. Die intrazelluläre Mg-Ionenaktivität nimmt dabei nur wenig zu. Die intrazelluläre Mg-Ionenaktivität in E. fö//-Zellen wird durch Stoffwechselinhibitoren nicht verändert. Diese Ergebnisse bestätigen, daß bei nicht wachsenden Bakterien Mg-Influx und Efflux gekoppelt sind und Mg nicht frei permeiert. Während des synchronisierten Wachstums nimmt der Mg-Gehalt im gleichen Maße wie der DNA-, RNA- und Proteingehalt kontinuierlich zu. Mg metabolism in E. coli In the presence of high extracellular Mg concentrations, the Mg content of E. coli increases as a result of Mg binding to the cell membrane. At the same time, there is only a small increase in the intracellular Mg ionic activity. The intracellular Mg ionic activity in E. coli cells is not altered by metabolic inhibitors. These results confirm that the Mg influx and efflux http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Clinical Chemistry and Laboratory Medicine de Gruyter

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