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Updated: Aug 15, 2025
18:10
Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency
Published on: June 16, 2011
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Nonstructural protein 1 widespread RNA decay phenotype varies among coronaviruses
Yahaira Bermudez1, Jacob Miles1, Mandy Muller1
1Department of Microbiology, University of Massachusetts, Amherst, 639 North Pleasant street, Morrill IV North, MA 01003 USA.
Iscience
|January 2, 2023
Summary
Coronaviruses
Area of Science:
- Virology
- Molecular Biology
- Genomics
Background:
- Nonstructural protein 1 (nsp1) is crucial for coronaviruses to remodel host gene expression.
- Understanding nsp1's diverse targets and interactions is key to comprehending viral strategies.
Purpose of the Study:
- To investigate the diversity of transcriptional targets among different coronavirus nsp1 proteins.
- To identify common host protein interactors of various nsp1 proteins.
Main Methods:
- Comparative transcriptomics to analyze gene expression changes.
- Affinity purification followed by mass spectrometry to identify protein interactions.
Main Results:
- Widespread RNA destabilization was observed, but nsp1 targets showed little similarity even between related viruses.
- A partial overlap in transcriptional targeting was found between alpha-coronavirus 229E and MERS nsp1.
- Interactome analysis revealed high variability, with 229E nsp1 interacting with the most host proteins.
Conclusions:
- Despite conserved functions, the specific host cell effects of nsp1 are virus-dependent.
- nsp1's precise impact on host gene expression varies significantly across different coronaviruses.
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