Arrange the following steps of the regulation of the trp operon in order of occurrence

Arrange the following steps of the regulation of the Trp operon in order of occurrence.

  • The Trp repressor protein binds to the operator
  • levels of tryptophan rise and more is required
  • Tryptophan binds to Trp repressor protein and induces a conformational change
  • Products of the Trp gene synthesize tryptophan
  • RNA polymerase binds to the promotor allowing transcription of the Trp genes to proceed.
  • The trp repressor protein blocks RNA polymerase from binding to the promotor.

Answer

1. RNA polymerase binds to the promotor allowing transcription of the Trp genes to proceed.

2. Products of the Trp gene synthesize tryptophan

3. levels of tryptophan rise and no more is required

4. Tryptophan binds to Trp repressor protein and induces a conformational change

5. The Trp repressor protein binds to the operator

6. The Trp repressor protein blocks RNA polymerase from binding to the promotor

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