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TitleStructural Insights into Common and Host-Specific Receptor-Binding Mechanisms in Algal Picorna-like Viruses.
Journal, issue, pagesViruses, Vol. 14, Issue 11, Year 2022
Publish dateOct 27, 2022
AuthorsHan Wang / Anna Munke / Siqi Li / Yuji Tomaru / Kenta Okamoto /
PubMed Abstract viruses are abundant algal viruses that regulate the dynamics of algal blooms in aquatic environments. They employ a narrow host range because they merely lyse their algal host species. This host- ... viruses are abundant algal viruses that regulate the dynamics of algal blooms in aquatic environments. They employ a narrow host range because they merely lyse their algal host species. This host-specific lysis is thought to correspond to the unique receptor-binding mechanism of the viruses. Here, we present the atomic structures of the full and empty capsids of Chaetoceros socialis forma radians RNA virus 1 built-in 3.0 Å and 3.1 Å cryo-electron microscopy maps. The empty capsid structure and the structural variability provide insights into its assembly and uncoating intermediates. In conjunction with the previously reported atomic model of the Chaetoceros tenuissimus RNA virus type II capsid, we have identified the common and diverse structural features of the VP1 surface between the viruses. We have also tested the potential usage of AlphaFold2 for structural prediction of the VP1s and a subsequent structural phylogeny for classifying viruses by their hosts. These findings will be crucial for inferring the host-specific receptor-binding mechanism in viruses.
External linksViruses / PubMed:36366467 / PubMed Central
MethodsEM (single particle)
Resolution3.0 - 3.1 Å
Structure data

EMDB-15823: Chaetoceros socialis forma radians RNA virus 1 full capsid
PDB-8b38: Chaetoceros socialis forma radians RNA virus 1 full capsid atomic model
Method: EM (single particle) / Resolution: 3.0 Å

EMDB-15830: haetoceros socialis forma radians RNA virus 1 empty capsid
PDB-8b3j: Chaetoceros socialis forma radians RNA virus 1 empty capsid atomic model
Method: EM (single particle) / Resolution: 3.1 Å

Source
  • chaetoceros socialis forma radians rna virus 1
KeywordsVIRUS / pseudo-T=3 / icosahedral / empty particle capsid

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