What question did this study set out to answer?

This research aims to understand the factors influencing the binding of small RNAs to mRNAs in bacteria.

February 2, 2026

Effect of Seed Length and Binding Motifs on Hfq-Mediated sRNA-mRNA Annealing Analyzed Using Single-Molecule FRET

MDMaciej DylewskiInternational Institute of Molecular and Cell Biology EMEwelina M. MałeckaInternational Institute of Molecular and Cell Biology

Key Points

This research aims to understand the factors influencing the binding of small RNAs to mRNAs in bacteria.
Varied determinants like seed strength and Hfq-binding motifs
Used single-molecule Förster resonance energy transfer (smFRET) to analyze the interactions
Monitored individual RNA molecules on a millisecond timescale.
Identified how variations in seed strength impact duplex stability
Demonstrated the role of Hfq-binding motifs in sRNA-mRNA annealing
Revealed dynamic behaviors of sRNA-mRNA interactions that are often overlooked in traditional assays.

Abstract

Defining the rules that govern annealing between bacterial small RNAs (sRNAs) and their mRNA targets is challenging because these RNAs are highly heterogeneous in sequence and structure. To disentangle the contribution of individual features, we systematically varied key determinants, including seed strength, Hfq-binding motifs, and the spacing between them. The effects of these features on sRNA-mRNA duplex stability were tested using single-molecule Förster resonance energy transfer (smFRET), which enables monitoring of individual RNA molecules on the millisecond timescale and provides access to dynamic events often obscured in ensemble assays.

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Cite This Study

Dylewski et al. (Fri,) studied this question.

synapsesocial.com/papers/69800910aa6434d8c2036de7 https://doi.org/https://doi.org/10.3791/69981

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