...downstream from a promoter to drive expression of the inserted gene. Insert The gene, promoter, or other DNA...particular plasmid. Promoter Region Drives transcription of the insert. The promoter recruits transcriptional...strength of the promoter can control the level of insert expression, as a strong promoter directs high expression...weaker promoters can direct low/endogenous expression levels. For more information about promoters, check...resources, including: Molecular Cloning Techniques Promoters Sequencing Primers Origins of Molecular Genetics... for a variety of studies used to investigate promoters, small RNAs, and other genetic elements. Plasmid...check out our promoters reference page . Selectable Marker Used to select for cells that have successfully...