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Updated: Nov 11, 2025

Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency

Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency

Published on: June 16, 2011

Increased RNA virus population diversity improves adaptability.

Florian Mattenberger¹, Marina Vila-Nistal², Ron Geller³

¹Institute for Integrative Systems Biology, I2SysBio (Universitat de València-CSIC), C. Catedràtic José Beltrán 2, 46980, Paterna, Spain.

Scientific Reports

|March 26, 2021

Summary

Increasing RNA virus diversity enhances adaptation to thermal inactivation. Higher diversity coxsackievirus B3 (CVB3) populations showed improved resistance, aiding directed evolution efforts.

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Last Updated: Nov 11, 2025

Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency

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Area of Science:

Virology
Evolutionary Biology
Molecular Biology

Background:

RNA viruses lack proofreading, leading to high genetic diversity.
This diversity enables rapid adaptation to environmental changes.

Purpose of the Study:

To investigate if increased initial diversity improves adaptation to thermal inactivation in coxsackievirus B3 (CVB3).
To compare high-diversity CVB3 populations against standard populations under thermal selection pressure.

Main Methods:

Experimentally increased genetic diversity of CVB3 populations within the capsid region.
Utilized an experimental evolution setting to assess adaptation to thermal inactivation.
Identified specific mutations in the CVB3 capsid conferring thermal resistance.

Main Results:

High-diversity CVB3 populations demonstrated superior resistance to thermal inactivation compared to standard populations.
Enhanced resistance was observed at both the experimental evolution temperature and a more extreme temperature.
Identified significant mutational epistasis among capsid mutations conferring thermal resistance.

Conclusions:

Augmenting naturally high RNA virus diversity can optimize adaptation to selective pressures.
Increased viral population diversity is beneficial for directed evolution strategies aiming to select for specific viral traits.