Low-copy plasmids can perform as well as or better than high-copy plasmids for metabolic engineering of bacteria.

Abstract excerpt

Multicopy plasmids are often chosen for the expression of recombinant genes in Escherichia coli. The high copy number is generally desired for maximum gene expression; however, the metabolic burden effects that usually result from multiple plasmid copies could prove to be detrimental for maximum productivity in certain metabolic engineering applications. In this study, low-copy mini-F plasmids were compared to...

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