Activity of Two Strong Promoters Cloned into Bacillus subtilis

Abstract
Two DNA fragments, one encoding the Escherichia coli trc promoter and the other endcoding a sequence from the early region of Bacillus subtilis phage SPO1, were cloned into the B. subtilis promoter-probe vector pPL603. Both fragments affected strong in vivo promoter activity in vegetative B. subtilis cells.