Title |
The new pLAI (lux regulon based auto-inducible) expression system for recombinant protein production in Escherichia coli
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Published in |
Microbial Cell Factories, January 2012
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DOI | 10.1186/1475-2859-11-3 |
Pubmed ID | |
Authors |
Salvatore Nocadello, Erwin Frans Swennen |
Abstract |
After many years of intensive research, it is generally assumed that no universal expression system can exist for high-level production of a given recombinant protein. Among the different expression systems, the inducible systems are the most popular for their tight regulation. However, induction is in many cases less favorable due to the high cost and/or toxicity of inducers, incompatibilities with industrial scale-up or detrimental growth conditions. Expression systems using autoinduction (or self-induction) prove to be extremely versatile allowing growth and induction of recombinant proteins without the need to monitor cell density or add inducer. Unfortunately, almost all the actual auto inducible expression systems need endogenous or induced metabolic changes during the growth to trigger induction, both frequently linked to detrimental condition to cell growth. In this context, we use a simple modular approach for a cell density-based genetic regulation in order to assemble an autoinducible recombinant protein expression system in E. coli. |
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