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Enzymes of ammonia assimilation and their regulation inAzospirillum lipoferum strain D-2

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Abstract

Azospirillum lipoferum strain D-2 possesses the following enzymes for the assimilation of N2 and NH +4 : nitrogenase, glutamine synthetase, NADPH-dependent glutamate synthase, NADH-/NADPH-dependent glutamate dehydrogenase, and NADH-dependent alanine dehydrogenase. Nitrogenase and glutamine synthetase are repressed, whereas glutamate dehydrogenase and alanine dehydrogenase are induced by NH +4 . Glutamine synthetase activity is modulated by both repression and depression and also by adenylylation.

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  1. Department of Microbiology & Biotechnology Centre, Faculty of Science, M. S. University of Baroda, 39002, Baroda, India

    Babita Saxena &  Vinod V. Modi

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  1. Babita Saxena
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  2. Vinod V. Modi
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Saxena, B., Modi, V.V. Enzymes of ammonia assimilation and their regulation inAzospirillum lipoferum strain D-2. Current Microbiology 18, 231–234 (1989). https://doi.org/10.1007/BF01570297

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