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Updated: May 6, 2026

Method for Measurement of Viral Fusion Kinetics at the Single Particle Level

Method for Measurement of Viral Fusion Kinetics at the Single Particle Level

Published on: September 7, 2009

Anomalous Fluorescence Dynamics Emerge in Densely Labeled Virus-Like Particles.

Tianran Li¹, Irina Tsvetkova¹, Anjali Krishna²

¹Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States.

|May 5, 2026

Summary

This summary is machine-generated.

The brome mosaic virus protein cage, when labeled with organic dyes, exhibits efficient energy transfer due to its network-like structure. This study models how fluorescence dynamics are shaped by the virus scaffold and various photophysical processes.

Keywords:

Förster resonant energy transfer chromophore coupling multiply labeled capsids virus-like particles

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Last Updated: May 6, 2026

Method for Measurement of Viral Fusion Kinetics at the Single Particle Level

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Published on: September 7, 2009

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Published on: January 2, 2014

Area of Science:

Biophysics
Materials Science
Nanotechnology

Background:

The brome mosaic virus (BMV) possesses a symmetric protein cage structure.
This scaffold is chemically addressable and can be labeled with organic dyes at high densities without structural compromise.

Purpose of the Study:

To investigate the fluorescence dynamics of dye-labeled BMV protein cages.
To understand the role of the virus scaffold in energy transfer and fluorescence behavior.
To develop a simplified model for fluorescence dynamics influenced by photophysical processes.

Main Methods:

Covalent labeling of the BMV protein cage with organic dyes.
Experimental characterization of fluorescence dynamics.
Computational analysis to disentangle various photophysical phenomena.
Development of a simplified model for fluorescence dynamics.

Main Results:

Dye-decorated BMV cages exhibit network-like connectivity facilitating efficient energy flow.
Fluorescence dynamics are influenced by Förster resonant energy transfer, prototropism, and photobleaching.
The virus shell scaffold plays a distinct role in shaping fluorescence dynamics compared to other luminescent nanoparticles.

Conclusions:

The BMV protein cage serves as a deterministic molecular scaffold for creating functional nanomaterials.
Understanding the interplay of energy transfer and photobleaching is crucial for applications utilizing dye-labeled viral nanoparticles.
The study provides insights into the unique fluorescence properties imparted by the viral scaffold.