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Bistabilität in der Aktivität der Glutaminsynthetase bei ammoniumlimitierten Chemostatenkulturen von Escherichia coli ML 30

✍ Scribed by Dr. P. J. Müller; I. I. Ivanova; F. Bergter


Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
337 KB
Volume
17
Category
Article
ISSN
0233-111X

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✦ Synopsis


The approximative estimation of the function μ([NH^+^~4~]) in cultures of E. coli ML 30 had shown that bistability of the ammonium concentration in ammonium limited continuous cultures could be possible (BERGTER et al. 1977). This phenomenon suggested a bistability in the regulation of ammonia assimilation. Therefore, the activity of one key enzyme of the two ammonia assimilation systems was measured. The distribution of the activity of glutamine synthetase in ammonia limited continuous cultures after different transition states confirmed this suggestion.


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