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Updated: Jun 16, 2026

Single-Molecule Measurement of Protein Interaction Dynamics Within Biomolecular Condensates

Single-Molecule Measurement of Protein Interaction Dynamics Within Biomolecular Condensates

Published on: January 5, 2024

'Making the molecular movie': first frames.

R J Dwayne Miller¹, Ralph Ernstorfer, Maher Harb

¹Department of Chemistry, and Institute for Optical Sciences, University of Toronto, 80 St George Street, Toronto, Ontario, Canada M5S 3H6. dmiller@lphys.chem.utoronto.ca

Acta Crystallographica. Section A, Foundations of Crystallography

|February 19, 2010

Summary

This summary is machine-generated.

New high-intensity X-ray and electron sources enable direct observation of atomic motions during barrier-crossing events. This allows for the creation of

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Area of Science:

* Atomic and molecular dynamics
* Ultrafast science
* Materials science

Background:

* Observing atomic motions in real-time is crucial for understanding chemical reactions and phase transitions.
* Traditional methods are limited by temporal resolution, obscuring fast atomic movements.

Purpose of the Study:

* To leverage advances in high-intensity pulsed sources for direct observation of atomic motions.
* To capture ultrafast structural dynamics during barrier-crossing processes.
* To enable the creation of 'molecular movies' for atomic-level insights.

Main Methods:

* Utilizing femtosecond excitation pulses to trigger structural dynamics.
* Employing high-intensity electron and X-ray pulsed sources for structural probing.
* Achieving single-shot resolution for capturing transient states.

Main Results:

* Demonstrated the ability to observe atomic motions during barrier-crossing events.
* Captured ultrafast phase transitions, including optically driven melting and bond stiffening.
* Enabled the visualization of structural dynamics faster than collisional decoherence.

Conclusions:

* High-intensity pulsed sources provide unprecedented atomic-level insights into structural dynamics.
* Direct observation of transition states in chemistry and biology is now feasible.
* This technique can simplify complex reaction pathways by identifying key reactive modes.