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Applied Microbiology and Biotechnology

, Volume 76, Issue 3, pp 521–532 | Cite as

Engineering cell physiology to enhance recombinant protein production in Escherichia coli

  • C. Perry ChouEmail author
Mini-Review

Abstract

The advent of recombinant DNA technology has revolutionized the strategies for protein production. Due to the well-characterized genome and a variety of mature tools available for genetic manipulation, Escherichia coli is still the most common workhorse for recombinant protein production. However, the culture for industrial applications often presents E. coli cells with a growth condition that is significantly different from their natural inhabiting environment in the gastrointestinal tract, resulting in deterioration in cell physiology and limitation in cell’s productivity. It has been recognized that innovative design of genetically engineered strains can highly increase the bioprocess yield with minimum investment on the capital and operating costs. Nevertheless, most of these genetic manipulations, by which traits are implanted into the workhorse through recombinant DNA technology, for enhancing recombinant protein productivity often translate into the challenges that deteriorate cell physiology or even jeopardize cell survival. An in-depth understanding of these challenges and their corresponding cellular response at the molecular level becomes crucial for developing superior strains that are more physiologically adaptive to the production environment to improve culture productivity. With the accumulated knowledge in cell physiology, whose importance to gene overexpression was to some extent undervalued previously, this review is intended to focus on the recent biotechnological advancement in engineering cell physiology to enhance recombinant protein production in E. coli.

Keywords

Cell physiology Escherichia coli Gene expression Heat shock Physiological stress Recombinant protein Stress response 

Notes

Acknowledgments

Research activities in the author’s lab are supported by the Natural Sciences and Engineering Research Council and the Canada Research Chair program of Canada.

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.Department of Chemical EngineeringUniversity of WaterlooWaterlooCanada

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