Journal
MICROBIOLOGICAL RESEARCH
Volume 156, Issue 1, Pages 13-18Publisher
URBAN & FISCHER VERLAG
DOI: 10.1078/0944-5013-00066
Keywords
ageing; cell lysis; growth; recombinant protein; stationary phase
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Cell growth and production of recombinant proteins in stationary phase cultures of Escherichia coli recover concomitantly with spontaneous lysis of a fraction of the ageing cell population. Further exploration of this event has indicated that sonic cell disruption stimulates both cell growth and synthesis of plasmid-encoded recombinant proteins, even in exponentially growing cultures. These observations indicate an efficient cell utilisation of released intracellular material and also that this capability is not restricted to extreme nutrient-starving conditions. In addition, the efficient re-conversion of waste cell material can be viewed as a potential strategy for an extreme exploitation of carbon sources and cell metabolites in production processes of both recombinant and non-recombinant microbial products.
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