Nascent RNA Folding and RNP Assembly Revealed by Single-molecule Microscopy

Area of Science:

• Molecular Biology
• Biochemistry
• Genetics

Background:

• Gene expression relies on RNA-protein complexes (RNPs), crucial for cellular functions.
• RNP assembly often occurs co-transcriptionally, requiring precise coordination of RNA synthesis, folding, and partner binding.

Purpose of the Study:

• To review single-molecule imaging techniques for studying RNP assembly.
• To elucidate the kinetic control of RNA folding and binding partner recruitment during transcription.

Main Methods:

• Single-molecule imaging techniques are highlighted for their ability to track dynamic processes.
• These methods allow visualization of RNA folding landscapes and protein interactions in real-time.

Main Results:

• Single-molecule studies reveal how RNAs navigate folding pathways during transcription.
• Mechanisms of binding partner recruitment and adaptation to RNA folding are elucidated.
• Functional links between transcription and RNP assembly machinery are identified.

Conclusions:

• Single-molecule methods provide critical insights into the mechanisms of RNP assembly.
• Further advancements in these techniques will deepen our understanding of gene expression regulation across life.