The new (dis)order in RNA regulation

Area of Science:

• Molecular Biology
• Biochemistry
• Genetics

Background:

• Canonical RNA-binding domains traditionally mediate protein-RNA interactions.
• Recent data reveal intrinsically disordered protein regions also play a significant role in RNA binding.
• These disordered regions challenge established views of RNA-protein interactions.

Purpose of the Study:

• To discuss how intrinsically disordered protein regions mediate protein-RNA interactions.
• To explore the mechanisms and consequences of these interactions in RNA metabolism.
• To highlight the importance of studying disordered regions in RNA biology and disease.

Main Methods:

• Review of pioneering studies and recent proteome-wide data.
• Conceptual grouping of disordered regions (RS-rich, RG-rich, basic sequences).
• Discussion of RNA binding, aggregation, and hydrogel formation by disordered regions.

Main Results:

• Disordered protein regions mediate both specific and non-specific RNA interactions.
• These interactions influence diverse RNA metabolic processes, including co- and post-transcriptional regulation.
• Disruption of these interactions is linked to various diseases.

Conclusions:

• Intrinsically disordered protein regions are critical players in RNA biology.
• Understanding their binding mechanisms and regulatory roles is essential for cellular homeostasis and disease research.
• Further investigation into these unorthodox interactions promises significant insights.