Riboswitches 13. Where do the aptamer of the riboswitches of bacterial mRNAs is

Question

Riboswitches

13. Where do the aptamer of the riboswitches of bacterial mRNAs is located?
A. In the 5’ region (UTR)
B. In the 3’ region (UTR)
C. In the ORFs
D. In the exons
E. In the introns

14. The aptamer of a riboswitch bound SAM, its cognate laigand, and it created a RNA hairpin on the RNA although the RBS of the ribosome was not affected. This may cause_______.
A. premature termination of transcription
B. inhibition of the initiation of translation
C. premature termination of translation
D. degradation of the mRNA

Explanation / Answer

Where do the aptamer of the riboswitches of bacterial mRNAs is located?

A) In the 5' Untranslated region.

These regulatory components are most generally found in the 5-untranslated regions of bacterial mRNAs, directly interacting with metabolites as a means of regulating expression of the coding region via a secondary structural switch.

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