Name the component that binds to the operator region of an operon and prevents RNA polymerase from transcribing the operon.
Promotor
Regulator protein
Repressor protein
Inducer
the repressor protein binds to the operator region of the operon and prevents RNA polymerase from transcribing the operon. The promoter provides the binding site for RNA polymerase, and the inducer inactivates the repressor to allow transcription.
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