RNA lifetime control, from stereochemistry to gene expression.

Area of Science:

• Molecular biology
• Gene expression regulation
• RNA biology

Background:

• Cellular machinery regulates RNA stability, influencing protein synthesis and degradation.
• RNA turnover pathways are crucial for maintaining cellular homeostasis and responding to stimuli.
• Dysregulation of RNA processing is linked to various human diseases.

Purpose of the Study:

• To review current structural and mechanistic insights into RNA-processing molecular machines.
• To elucidate how these assemblies distinguish functional RNAs from those targeted for degradation.
• To highlight the role of these machines in post-transcriptional control and disease.

Main Methods:

• Review of recent structural and mechanistic studies on RNA-processing enzymes and assemblies.
• Analysis of data illuminating the recognition and operational mechanisms of these machines.
• Integration of findings on transcript fate determination in post-transcriptional regulation.

Main Results:

• Recent data provide structural and mechanistic details of key RNA-processing machines.
• These assemblies dynamically recognize and act on specific RNA transcripts.
• The decision points for RNA fate are dictated by these complex molecular interactions.

Conclusions:

• Structural and mechanistic insights are advancing our understanding of RNA turnover.
• These RNA-processing assemblies are critical regulators of gene expression.
• Understanding these mechanisms offers potential avenues for therapeutic intervention in diseases linked to RNA processing.