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Updated: Feb 22, 2026

Optical Tweezers to Study RNA-Protein Interactions in Translation Regulation

Optical Tweezers to Study RNA-Protein Interactions in Translation Regulation

Published on: February 12, 2022

RNA Unzipping and Force Measurements with a Dual Optical Trap.

Laurent Geffroy¹, Pierre Mangeol^1,2, Thierry Bizebard³

¹Nanobiophysics, ESPCI Paris, 10 rue Vauquelin, 75005, Paris, France.

Methods in Molecular Biology (Clifton, N.J.)

|September 24, 2017

Summary

This study details a method for mechanically unfolding single RNA molecules using an optical trap. Researchers precisely measure force to analyze RNA structure and sequence-dependent properties.

Keywords:

DNA Force Molecular construction Optical trap RNA Single-molecule Unzipping

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Last Updated: Feb 22, 2026

Optical Tweezers to Study RNA-Protein Interactions in Translation Regulation

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Published on: February 12, 2022

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Use of Dual Optical Tweezers and Microfluidics for Single-Molecule Studies

Use of Dual Optical Tweezers and Microfluidics for Single-Molecule Studies

Published on: November 18, 2022

Area of Science:

Biophysics
Molecular Biology
Nanotechnology

Background:

Single-molecule force spectroscopy is crucial for understanding molecular mechanics.
Optical traps provide precise force control for manipulating biomolecules.
RNA/DNA hybrids offer a stable platform for mechanical unfolding experiments.

Purpose of the Study:

To describe the technical aspects of mechanically unfolding single RNA molecules.
To detail the use of dual-beam optical traps for precise force measurements.
To enable the study of structure and base-sequence-dependent force signals in RNA.

Main Methods:

Preparation of an RNA/DNA hybrid construct for attachment to beads.
Utilizing a dual-beam optical trap to hold and manipulate the construct.
Measuring sub-piconewton forces via back focal plane interferometry.

Main Results:

Successful mechanical unfolding of single RNA molecules achieved.
Precise force measurements obtained with high sensitivity.
Demonstrated ability to measure structure and base-sequence-dependent force signals.

Conclusions:

The described method is effective for single-molecule RNA mechanical unfolding.
Technical advancements allow for high-precision force measurements.
This technique facilitates detailed investigation of RNA mechanical properties.