Promoters

Definition

Promoters are specific DNA sequences that provide a binding site for RNA polymerase and other transcription factors, initiating the process of transcription.

Related terms

Enhancer: A short region of DNA that can be bound by proteins (activators) to increase the likelihood that transcription of a particular gene will occur.

TATA Box:

A DNA sequence found in the promoter region of genes in archaea and eukaryotes; it helps position RNA polymerase II for transcription initiation.

Operator: A segment of DNA where repressor proteins can bind and block transcription.