what determines promoter strength
The specific sequence of the promoter determines the strength of the promoter (a strong promoter leads to a high rate of transcription initiation). In addition to sequences that promote transcription, a promoter may include additional sequences known as operators that control the strength of the promoter.he registry symbol for a promoter is shown above a typical sequence for a bacterial promoter. The lavender shaded boxes indicate the two most conserved regions of a bacterial promoter and are located at -10 and -35 bases from the transcriptional start site (shaded in green).