A promoter is a DNA sequence that initiates gene transcription by providing a binding site for RNA polymerase. It is essential for the regulation and expression of genes.
5 Must Know Facts For Your Next Test
Promoters are located upstream of the coding sequence of a gene.
The promoter region includes specific sequences like the TATA box in eukaryotes.
In prokaryotes, promoters often contain -10 and -35 consensus sequences recognized by sigma factors.
Promoter strength determines the frequency of transcription initiation.
Mutations in promoter regions can significantly affect gene expression levels.