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  • 1
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 33 (1989), S. 500-505 
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The culture fluorescence of two recombinant Escherichia coli strains with high plasmid copy number were studied and compared to both the host and low copy number varieties of the corresponding strains. Culture fluorescence data are related to the concentration of reduced intracellular nicotinamide adenine dinucleotide within a cell, and can therefore be used as a means for detecting changes in metabolic states. Correlation curves relating culture fluorescence to biomass show that the recombinant system maintains a larger pool of intracellular NADH at high plasmid copy numbers than either the host or the recombinant system at low copy numbers. These results demonstrate the ability of a fluorescence probe to detect differences in the metabolic demands made on an over-producing recombinant organism.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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