(Solved): Riboswitches control translation by which mechanism? modifying the secondary structure of the mRNA ...

Riboswitches control translation by which mechanism? modifying the secondary structure of the mRNA modifying the tertiary structure of the mRNA irreversibly binding to the promoter sequence, blocking initiation inducing degradation of the mRNA Some mutations in the tryptophan \( (t r p) 5^{\prime} \) UTR increase termination by the attenuator. Where might these mutations occur. and how might they affect the attenuator? A deletion in region 2 that prevents it from pairing with region 3 will increase termination by the attenuator by affecting antiterminator formation. A deletion in region 1 that prevents it from pairing with region 3 will increase termination by the attenuator by inhibiting antiterminator formation. A mutation in region 1 that affects antiterminator formation by eliminating the two adjacent tryptophan codons within region 1 will prevent ribosome stalling and increase the rate of attenuator formation. A mutation in region 2 that prevents the ribosome from stalling at the adjacent tryptophan codons within region 4 will allow termination by the attenuator. A mutation that blocks translation initiation within region 1 and does not allow the ribosome to migrate along the trp operon mRNA will increase termination by the attenuator.