8CXP image
Entry Detail
PDB ID:
8CXP
EMDB ID:
Keywords:
Title:
Characterisation of a Seneca Valley Virus Thermostable Mutant
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
2022-05-22
Release Date:
2022-09-28
Method Details:
Experimental Method:
Resolution:
2.47 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Capsid protein VP1
Chain IDs:A
Chain Length:263
Number of Molecules:1
Biological Source:Senecavirus A
Polymer Type:polypeptide(L)
Description:Capsid protein VP3
Chain IDs:B
Chain Length:239
Number of Molecules:1
Biological Source:Senecavirus A
Polymer Type:polypeptide(L)
Description:VP2
Chain IDs:C
Chain Length:284
Number of Molecules:1
Biological Source:Senecavirus A
Polymer Type:polypeptide(L)
Description:VP4
Chain IDs:D
Chain Length:71
Number of Molecules:1
Biological Source:Senecavirus A
Ligand Molecules
Primary Citation
Characterisation of a Seneca Valley virus thermostable mutant.
Virology 575 74 82 (2022)
PMID: 36084546 DOI: 10.1016/j.virol.2022.08.015

Abstact

Seneca Valley virus (SVV) is a newly discovered picornavirus in the Senecavirus genus. SVV-001 strain has shown promise as an oncolytic virus against tumors with neuroendocrine features. There is a need to use a structure-based approach to develop virus-like particles capable to mimicking the architecture of naturally occurring empty capsids that can be used as vaccines or as carriers for targeted cancer treatment. However, these empty capsids are inherently less stable, and tedious to purify. This warrants investigation into factors which confer the SVV capsid stability and into combining this knowledge to recombinantly express stable SVV VLPs. In this study, we isolated a thermostable mutant of SVV by thermal selection assays and we characterized a single mutation located in a capsid protein. The cryo-EM map of this mutant showed conformational shifts that facilitated the formation of additional hydrogen bonds and aromatic interactions, which could serve as capsid stabilizing factors.

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Primary Citation of related structures