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Which of the following acts as a co-repressor in tryptophan operon?

Which of the following acts as a co-repressor in tryptophan operon? Correct Answer tryptophan

Unlike lactose operon which is an inducible operon, the tryptophan operon is a repressible operon. Presence of tryptophan prevents the transcription of synthesis machinery requisite for the production of tryptophan by the cell. Tryptophan in this case is therefore a co-repressor.

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