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Das Verhalten von Nitratreductase, Nitritreductase, Hydrogenase und anderen Enzymen von Ankistrodesmus braunii bei Stickstoffmangel

Das Verhalten von Nitratreductase, Nitritreductase, Hydrogenase und anderen Enzymen von... 203 79 79 1 1 Heinz Oesterheld Botanisches Institut der Universität Erlangen Summary An oxidation of organic nitrogen compounds leading to an intracellular formation of nitrite and nitrate (heterotrophic nitrification) was found in nitrogen-deficient Ankistrodesmus braunii . This explains the rather high levels of nitrate and nitrite reductases observed in algae after the supply of nitrogen has been exhausted. Hydrogenase is active also in nitrogen-deficient algae which, however, can no longer use nitrite as an acceptor for hydrogen. The activation of hydrogenase is energy-dependent and can be inhibited by means of antibiotics (actinomycin C, puromycin, and gentamycin). Protein synthesis seems to take place during incubation under hydrogen. For comparison, several other enzymes (glucose-6-phosphate dehydrogenase, NAD(P) reductase, glyoxylate reductase, catalase, malate dehydrogenase, glutamate dehydrogenase, and isocitratase) were studied in nitrogen-deficient cells. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Microbiology Springer Journals

Das Verhalten von Nitratreductase, Nitritreductase, Hydrogenase und anderen Enzymen von Ankistrodesmus braunii bei Stickstoffmangel

Archives of Microbiology , Volume 79 (1) – Mar 1, 1971

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References (39)

Publisher
Springer Journals
Copyright
Copyright © 1971 by Springer-Verlag
Subject
Life Sciences; Biotechnology; Biochemistry, general; Cell Biology; Ecology; Microbial Ecology; Microbiology
ISSN
0302-8933
eISSN
1432-072X
DOI
10.1007/BF00412038
Publisher site
See Article on Publisher Site

Abstract

203 79 79 1 1 Heinz Oesterheld Botanisches Institut der Universität Erlangen Summary An oxidation of organic nitrogen compounds leading to an intracellular formation of nitrite and nitrate (heterotrophic nitrification) was found in nitrogen-deficient Ankistrodesmus braunii . This explains the rather high levels of nitrate and nitrite reductases observed in algae after the supply of nitrogen has been exhausted. Hydrogenase is active also in nitrogen-deficient algae which, however, can no longer use nitrite as an acceptor for hydrogen. The activation of hydrogenase is energy-dependent and can be inhibited by means of antibiotics (actinomycin C, puromycin, and gentamycin). Protein synthesis seems to take place during incubation under hydrogen. For comparison, several other enzymes (glucose-6-phosphate dehydrogenase, NAD(P) reductase, glyoxylate reductase, catalase, malate dehydrogenase, glutamate dehydrogenase, and isocitratase) were studied in nitrogen-deficient cells.

Journal

Archives of MicrobiologySpringer Journals

Published: Mar 1, 1971

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