In vivo and in vitro activities of point mutants of the bacteriophage T7 RNA polymerase promoter.

Abstract excerpt

Two compatible plasmids were recently reported [Ikeda et al. (1992) Nucleic Acids Res. 20, 2517-2524] that together can be used to determine whether a mutant T7 RNA polymerase promoter is active or inactive in vivo. The first plasmid, pKGP1-1, carries T7 gene 1 (the gene encoding T7 RNA polymerase) ligated to a tac promoter, while the second plasmid, pCM-X#, carries the gene encoding chloramphenicol...

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