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Open data
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Basic information
Entry | Database: PDB / ID: 6lb0 | |||||||||
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Title | The cryo-EM structure of HEV VLP in complex with Fab 8C11 | |||||||||
![]() | Protein ORF2 | |||||||||
![]() | VIRUS LIKE PARTICLE / HEV / Neutralizing antibody / immune-complex | |||||||||
Function / homology | ![]() T=1 icosahedral viral capsid / host cell endoplasmic reticulum / host cell Golgi apparatus / host cell surface / entry receptor-mediated virion attachment to host cell / symbiont entry into host cell / host cell nucleus / structural molecule activity / cell surface / RNA binding ...T=1 icosahedral viral capsid / host cell endoplasmic reticulum / host cell Golgi apparatus / host cell surface / entry receptor-mediated virion attachment to host cell / symbiont entry into host cell / host cell nucleus / structural molecule activity / cell surface / RNA binding / extracellular region / identical protein binding Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.6 Å | |||||||||
![]() | Zheng, Q. / He, M. / Li, S. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Viral neutralization by antibody-imposed physical disruption. Authors: Qingbing Zheng / Jie Jiang / Maozhou He / Zizheng Zheng / Hai Yu / Tingting Li / Wenhui Xue / Zimin Tang / Dong Ying / Zekai Li / Shuo Song / Xinlin Liu / Kaihang Wang / Zhiqing Zhang / ...Authors: Qingbing Zheng / Jie Jiang / Maozhou He / Zizheng Zheng / Hai Yu / Tingting Li / Wenhui Xue / Zimin Tang / Dong Ying / Zekai Li / Shuo Song / Xinlin Liu / Kaihang Wang / Zhiqing Zhang / Daning Wang / Yingbin Wang / Xiaodong Yan / Qinjian Zhao / Jun Zhang / Ying Gu / Shaowei Li / Ningshao Xia / ![]() ![]() Abstract: In adaptive immunity, organisms produce neutralizing antibodies (nAbs) to eliminate invading pathogens. Here, we explored whether viral neutralization could be attained through the physical ...In adaptive immunity, organisms produce neutralizing antibodies (nAbs) to eliminate invading pathogens. Here, we explored whether viral neutralization could be attained through the physical disruption of a virus upon nAb binding. We report the neutralization mechanism of a potent nAb 8C11 against the hepatitis E virus (HEV), a nonenveloped positive-sense single-stranded RNA virus associated with abundant acute hepatitis. The 8C11 binding flanks the protrusion spike of the HEV viruslike particles (VLPs) and leads to tremendous physical collision between the antibody and the capsid, dissociating the VLPs into homodimer species within 2 h. Cryo-electron microscopy reconstruction of the dissociation intermediates at an earlier (15-min) stage revealed smeared protrusion spikes and a loss of icosahedral symmetry with the capsid core remaining unchanged. This structural disruption leads to the presence of only a few native HEV virions in the ultracentrifugation pellet and exposes the viral genome. Conceptually, we propose a strategy to raise collision-inducing nAbs against single spike moieties that feature in the context of the entire pathogen at positions where the neighboring space cannot afford to accommodate an antibody. This rationale may facilitate unique vaccine development and antimicrobial antibody design. | |||||||||
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 71.5 KB | Display | ![]() |
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PDB format | ![]() | 50 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 0866MC ![]() 0861C ![]() 0863C ![]() 6latC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
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Symmetry | Point symmetry: (Schoenflies symbol: I (icosahedral)) |
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Components
#1: Protein | Mass: 51303.062 Da / Num. of mol.: 1 / Mutation: P162S,N200S,A511S,L569I Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Production host: ![]() References: UniProt: A0A4P6DD72, UniProt: P33426*PLUS |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Hepatitis E virus / Type: VIRUS / Entity ID: all / Source: RECOMBINANT |
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Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() |
Details of virus | Empty: YES / Enveloped: NO / Isolate: OTHER / Type: VIRUS-LIKE PARTICLE |
Buffer solution | pH: 7.4 |
Specimen | Conc.: 2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Tecnai F30 / Image courtesy: FEI Company |
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Microscopy | Model: FEI TECNAI F30 |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN Specimen holder model: GATAN 626 SINGLE TILT LIQUID NITROGEN CRYO TRANSFER HOLDER |
Image recording | Electron dose: 25 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON II (4k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.14_3259: / Classification: refinement |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
Symmetry | Point symmetry: I (icosahedral) |
3D reconstruction | Resolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 4259 / Symmetry type: POINT |