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Elsevier, Journal of Biotechnology, 4(126), p. 440-453, 2006

DOI: 10.1016/j.jbiotec.2006.05.015

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Mutation-induced metabolite pool alterations in Corynebacterium glutamicum: Towards the identification of nitrogen control signals

Journal article published in 2006 by T. Mueller, Tim Müller, Julia Strosser, Sebastian Buchinger, Lars Nolden, Astrid Wirtz ORCID, Reinhard Kramer, Andreas Burkovski
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This paper is available in a repository.

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Abstract

The influence of glutamate dehydrogenase activity on nitrogen regulation in Corynebacterium glutamicum was investigated. As shown by RNA hybridization experiments deletion of the gdh gene results in a rearrangement of nitrogen metabolism. Even when sufficiently supplied with nitrogen sources, a gdh deletion strain showed the typical nitrogen starvation response of C. glutamicum. These changes in transcription correlate with distinct alterations of intracellular metabolite pattern. Metabolite analyses of different mutant strains and the wild type indicated that ammonium and 2-oxoglutarate might influence the nitrogen regulation system of C. glutamicum cells.