Characterization and sequence analysis of the F2 promoter from corynephage BFK20.

F2 promoter from corynephage BFK20 was isolated and characterized. It was functional in Escherichia coli and Corynebacterium glutamicum. Cloning of the F2 promoter into the pJUP05 promoter probe vector caused an increase of the neomycin phosphotransferase II specific activity. According to the Northern blot hybridization the nptII gene was expressed from the cloned F2 promoter. The apparent transcription start point in E. coli and C. glutamicum was determined. The -35 region of F2 promoter showed high similarity to that of E. coli promoter consensus sequence, but its -10 region was G+C rich and had no significant homology to that.