Journal
JOURNAL OF BIOTECHNOLOGY
Volume 126, Issue 4, Pages 440-453Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jbiotec.2006.05.015
Keywords
Corynebacterium; glutamate dehydrogenase; nitrogen control; nitrogen regulation
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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. (c) 2006 Elsevier B.V. All rights reserved.
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