A Simple and Effective Method for Construction of Escherichia coli Strains Proficient for Genome Engineering
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- A Simple and Effective Method for Construction of Escherichia coli Strains Proficient for Genome Engineering
- Ryu, Young Shin; Biswas, Rajesh Kumar; Shin, Kwangsu; Parisutham, Vinuselvi; Kim, Suk Min; Lee, Sung Kuk
- Issue Date
- PUBLIC LIBRARY SCIENCE
- PLOS ONE, v.9, no.4, pp.e94266
- Multiplex genome engineering is a standalone recombineering tool for large-scale programming and accelerated evolution of cells. However, this advanced genome engineering technique has been limited to use in selected bacterial strains. We developed a simple and effective strain-independent method for effective genome engineering in Escherichia coli. The method involves introducing a suicide plasmid carrying the l Red recombination system into the mutS gene. The suicide plasmid can be excised from the chromosome via selection in the absence of antibiotics, thus allowing transient inactivation of the mismatch repair system during genome engineering. In addition, we developed another suicide plasmid that enables integration of large DNA fragments into the lacZ genomic locus. These features enable this system to be applied in the exploitation of the benefits of genome engineering in synthetic biology, as well as the metabolic engineering of different strains of E. coli.
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