Tryptophan Operon

• Tryptophan operons are repressible.
• RNA polymerase is able to transcribe jeans TRPA to TRPE if tryptophan is not present.
• Tryptophan operons repressor is inactive until tryptophan is present.
• Tryptophan operons are used by the cell to synthesize tryptophan.
• Tryptophan operons repressor are default off.