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Off-line monitoring of bacterial stress response during recombinant protein production using an optical biosensor
Slovak university of Technology.
Slovak Academy of Sciences.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Biotechnology .
2004 (English)In: Journal of Biotechnology, ISSN 0168-1656, E-ISSN 1873-4863, Vol. 111, no 2, 191-201 p.Article in journal (Refereed) Published
Abstract [en]

A surface plasmon resonance (SPR) biosensor was used to monitor the profiles of the heat-shock protein (DnaK) and the expression of a heterologous protein to map the dynamics of the cellular stress response in Escherichia coli. As expression system was used an E. coli strain overproducing human recombinant superoxide dismutase (rhSOD). Expression of DnaK showed complex patterns differing with strength of induction. The strong up-regulation of DnaK expression was observed in all cultivations which over-produced of rhSOD. Similar patterns were not observed in non-induced reference cultures. Differences in DnaK concentration profiles were correlated with induction strength. Presented data, carried out in shake flask and glucose limited fed-batch cultivation, show a good consistency with previously published transcriptional profiling results and provide complementary information to understand stress response related to overproduction of recombinant protein. The study also demonstrates the feasibility of using the SPR as a two channel protein array for monitoring of intracellular components. © 2004 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2004. Vol. 111, no 2, 191-201 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-40893DOI: 10.1016/j.jbiotec.2004.04.007Local ID: 54476OAI: oai:DiVA.org:liu-40893DiVA: diva2:261742
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-12-13

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Mandenius, Carl-Fredrik

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