AI Insight
Researchers have discovered how RhoBAST, a small RNA molecule, activates fluorescent dyes through a mechanism involving a single nucleotide structural change. This "nucleotide flip" acts as a molecular switch that controls the fluorescence activation process. The finding reveals the precise structural mechanism that allows this RNA aptamer to light up fluorescent markers for cellular imaging.
Why it matters
This discovery enhances our understanding of how to track RNA molecules in living cells using super-resolution microscopy. The mechanism could enable improved design of RNA-based fluorescent tools for studying cellular processes in real-time with greater precision.
Understand the Science
RhoBAST is a tiny RNA molecule that activates fluorescent dyes, enabling researchers to track RNA molecules in living cells with super-resolution. An international collaboration, which includes Ronald Micura and his team from the Institute of Organic Chemistry, has now shown that a small, local “nucleotide flip” within the RNA controls this fluorescence activation.
Source: How one RNA nucleotide switch activates fluorescent dyes