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- PDB-8di5: Cryo-EM structure of SARS-CoV-2 Beta (B.1.351) spike protein in c... -
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Open data
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Basic information
Entry | Database: PDB / ID: 8di5 | |||||||||
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Title | Cryo-EM structure of SARS-CoV-2 Beta (B.1.351) spike protein in complex with VH domain F6 (focused refinement of RBD and VH F6) | |||||||||
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![]() | VIRAL PROTEIN/IMMUNE SYSTEM / SARS-CoV-2 / glycoprotein / fusion protein / viral protein / VH domain / F6 / VIRAL PROTEIN-IMMUNE SYSTEM complex | |||||||||
Function / homology | ![]() Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell ...Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / receptor-mediated endocytosis of virus by host cell / membrane fusion / Attachment and Entry / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / receptor ligand activity / host cell surface receptor binding / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell plasma membrane / virion membrane / identical protein binding / membrane / plasma membrane Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.04 Å | |||||||||
![]() | Zhu, X. / Saville, J.W. / Mannar, D. / Berezuk, A.M. / Subramaniam, S. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Potent and broad neutralization of SARS-CoV-2 variants of concern (VOCs) including omicron sub-lineages BA.1 and BA.2 by biparatopic human VH domains. Authors: Chuan Chen / James W Saville / Michelle M Marti / Alexandra Schäfer / Mary Hongying Cheng / Dhiraj Mannar / Xing Zhu / Alison M Berezuk / Anupam Banerjee / Michele D Sobolewski / Andrew Kim ...Authors: Chuan Chen / James W Saville / Michelle M Marti / Alexandra Schäfer / Mary Hongying Cheng / Dhiraj Mannar / Xing Zhu / Alison M Berezuk / Anupam Banerjee / Michele D Sobolewski / Andrew Kim / Benjamin R Treat / Priscila Mayrelle Da Silva Castanha / Nathan Enick / Kevin D McCormick / Xianglei Liu / Cynthia Adams / Margaret Grace Hines / Zehua Sun / Weizao Chen / Jana L Jacobs / Simon M Barratt-Boyes / John W Mellors / Ralph S Baric / Ivet Bahar / Dimiter S Dimitrov / Sriram Subramaniam / David R Martinez / Wei Li / ![]() ![]() Abstract: The emergence of SARS-CoV-2 variants of concern (VOCs) requires the development of next-generation biologics with high neutralization breadth. Here, we characterized a human V domain, F6, which we ...The emergence of SARS-CoV-2 variants of concern (VOCs) requires the development of next-generation biologics with high neutralization breadth. Here, we characterized a human V domain, F6, which we generated by sequentially panning large phage-displayed V libraries against receptor binding domains (RBDs) containing VOC mutations. Cryo-EM analyses reveal that F6 has a unique binding mode that spans a broad surface of the RBD and involves the antibody framework region. Attachment of an Fc region to a fusion of F6 and ab8, a previously characterized V domain, resulted in a construct (F6-ab8-Fc) that broadly and potently neutralized VOCs including Omicron. Additionally, prophylactic treatment using F6-ab8-Fc reduced live Beta (B.1.351) variant viral titers in the lungs of a mouse model. Our results provide a new potential therapeutic against SARS-CoV-2 variants including Omicron and highlight a vulnerable epitope within the spike that may be exploited to achieve broad protection against circulating variants. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 90.2 KB | Display | ![]() |
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PDB format | ![]() | 55.4 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.2 MB | Display | ![]() |
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Full document | ![]() | 1.2 MB | Display | |
Data in XML | ![]() | 29.7 KB | Display | |
Data in CIF | ![]() | 40.8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 27439MC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
#1: Protein | Mass: 142319.453 Da / Num. of mol.: 1 Mutation: R682G,R683S,R685S,F817P,A892P,A899P,A942P,K986P,V987P Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: S, 2 / Production host: ![]() |
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#2: Antibody | Mass: 13112.434 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
#3: Sugar | ChemComp-NAG / |
Has ligand of interest | N |
-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
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Buffer solution | pH: 8 | ||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: TFS KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 500 nm |
Image recording | Electron dose: 40 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k) |
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Processing
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.04 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 57496 / Symmetry type: POINT | ||||||||||||||||||||||||
Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
Displacement parameters | Biso mean: 98.3 Å2 | ||||||||||||||||||||||||
Refine LS restraints |
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