A novel inducible expression system for the functional study of toxic gene in bacteria.

Abstract excerpt

The cloning and expression of toxic proteins in bacteria have posed a great challenge because of the leaky expression in inducible expression systems. Using artificial gene synthesis and clone screening methods, we identified a mutant T5 promoter, which significantly reduced leaky expression of lac operator. The mutant T5 promoter contains two T deletions at -35 region and may reduce promoter activity. A...

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