Parts of the operon and their functions - Click the button to locate each part
Repressor Gene - Produces a repressor protein that fits in the operator to turn the operon off
Promoter - RNA polymerase attaches here to begin transcription of the genes
Operator - The active repressor fits in notches to block RNA polymerase and turn off transcription.
Structural Genes - Metabolic pathway genes with code for enzymes to digest lacotse