Small molecules that bind directly to mRNAs and effect transcription or translation are binding to regions of the mRNA known as
A)Shine-Delgarno sequences.
B)the operator region.
C)riboswitches.
D)ribozymes.
E)allosteric sites.

Question

Quizplus · Accepted Answer

Riboswitches are specific RNA sequences that bind small molecules and cause a conformational change in the mRNA structure, affecting transcription or translation. They act as cellular sensors that control gene expression in response to environmental conditions. Shine-Delgarno sequences are found in prokaryotic mRNAs and are involved in translation initiation. The operator region is a segment of DNA near the start of an operon that controls gene expression by interacting with a repressor protein. Ribozymes are catalytic RNA molecules that can cleave other RNA molecules. Allosteric sites are regions on proteins that can bind small molecules and cause a conformational change in the protein shape, affecting its activity.

Small Molecules That Bind Directly to MRNAs and Effect Transcription