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- PDB-8hee: Pentamer of FMDV (A/TUR/14/98) -

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Basic information

Entry
Database: PDB / ID: 8hee
TitlePentamer of FMDV (A/TUR/14/98)
Components
  • VP1 of capsid protein
  • VP2 of capsid protein
  • VP3 of capsid protein
KeywordsVIRAL PROTEIN
Biological speciesFoot-and-mouth disease virus
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsLi, H.Z. / Dong, H.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: Nat Commun / Year: 2024
Title: Foot-and-mouth disease virus antigenic landscape and reduced immunogenicity elucidated in atomic detail.
Authors: Haozhou Li / Pan Liu / Hu Dong / Aldo Dekker / Michiel M Harmsen / Huichen Guo / Xiangxi Wang / Shiqi Sun /
Abstract: Unlike most other picornaviruses, foot-and-mouth disease (FMD) intact virions (146S) dissociate easily into small pentameric subunits (12S). This causes a dramatically decreased immunogenicity by a ...Unlike most other picornaviruses, foot-and-mouth disease (FMD) intact virions (146S) dissociate easily into small pentameric subunits (12S). This causes a dramatically decreased immunogenicity by a mechanism that remains elusive. Here, we present the high-resolution structures of 12S (3.2 Å) and its immune complex of a single-domain antibody (VHH) targeting the particle interior (3.2 Å), as well as two 146S-specific VHHs complexed to distinct sites on the 146S capsid surface (3.6 Å and 2.9 Å). The antigenic landscape of 146S is depicted using 13 known FMD virus-antibody complexes. Comparison of the immunogenicity of 146S and 12S in pigs, focusing on the resulting antigenic sites and incorporating structural analysis, reveals that dissociation of 146S leads to structural alteration and destruction of multiple epitopes, resulting in significant differences in antibody profiles/lineages induced by 12S and 146S. Furthermore, 146S generates higher synergistic neutralizing antibody titers compared to 12S, whereas both particles induce similar total FMD virus specific antibody titers. This study can guide the structure-based rational design of novel multivalent and broad-spectrum recombinant vaccines for protection against FMD.
History
DepositionNov 8, 2022Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Nov 15, 2023Provider: repository / Type: Initial release
Revision 1.1Oct 23, 2024Group: Data collection / Database references / Structure summary
Category: citation / citation_author ...citation / citation_author / em_admin / pdbx_entry_details
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: VP1 of capsid protein
B: VP2 of capsid protein
C: VP3 of capsid protein
D: VP1 of capsid protein
E: VP1 of capsid protein
F: VP1 of capsid protein
G: VP1 of capsid protein
L: VP3 of capsid protein
M: VP3 of capsid protein
N: VP3 of capsid protein
O: VP3 of capsid protein
H: VP2 of capsid protein
I: VP2 of capsid protein
J: VP2 of capsid protein
K: VP2 of capsid protein


Theoretical massNumber of molelcules
Total (without water)359,85515
Polymers359,85515
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein
VP1 of capsid protein


Mass: 23111.094 Da / Num. of mol.: 5 / Source method: isolated from a natural source / Source: (natural) Foot-and-mouth disease virus
#2: Protein
VP2 of capsid protein


Mass: 24575.779 Da / Num. of mol.: 5 / Source method: isolated from a natural source / Source: (natural) Foot-and-mouth disease virus
#3: Protein
VP3 of capsid protein


Mass: 24284.121 Da / Num. of mol.: 5 / Source method: isolated from a natural source / Source: (natural) Foot-and-mouth disease virus
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Foot-and-mouth disease virus / Type: VIRUS / Entity ID: all / Source: NATURAL
Source (natural)Organism: Foot-and-mouth disease virus
Details of virusEmpty: YES / Enveloped: NO / Isolate: OTHER / Type: VIRION
Buffer solutionpH: 5.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

MicroscopyModel: FEI TITAN
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: DIFFRACTION / Nominal defocus max: 2500 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 40 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING ONLY
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 192654 / Symmetry type: POINT

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