In the trp operon, what molecule acts as the corepressor by binding to the repressor?

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Multiple Choice

In the trp operon, what molecule acts as the corepressor by binding to the repressor?

Explanation:
Tryptophan acts as the corepressor. When tryptophan is plentiful, it binds to the repressor protein, changing its shape so the repressor can attach to the operator region of the trp operon. This prevents RNA polymerase from initiating transcription, stopping the production of enzymes needed to synthesize tryptophan. Tryptase is not involved in this regulation, and guanine or thymine are DNA bases not functioning as the regulatory corepressor in this system.

Tryptophan acts as the corepressor. When tryptophan is plentiful, it binds to the repressor protein, changing its shape so the repressor can attach to the operator region of the trp operon. This prevents RNA polymerase from initiating transcription, stopping the production of enzymes needed to synthesize tryptophan. Tryptase is not involved in this regulation, and guanine or thymine are DNA bases not functioning as the regulatory corepressor in this system.

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