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Yorodumi- PDB-7ukl: Cryo-EM structure of Antibody 12-16 in complex with prefusion SAR... -
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Basic information
| Entry | Database: PDB / ID: 7ukl | ||||||
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| Title | Cryo-EM structure of Antibody 12-16 in complex with prefusion SARS-CoV-2 Spike glycoprotein | ||||||
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Keywords | VIRAL PROTEIN/IMMUNE SYSTEM / Neutralizing Antibody / Viral Fusion Protein / SARS-CoV-2 / VIRAL PROTEIN-IMMUNE SYSTEM complex | ||||||
| Function / homology | Function and homology informationsymbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / viral translation / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion ...symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / viral translation / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / membrane fusion / entry receptor-mediated virion attachment to host cell / Attachment and Entry / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / receptor ligand activity / endocytosis involved in viral entry into host cell / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / symbiont entry into host cell / 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 | Homo sapiens (human)![]() | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.09 Å | ||||||
Authors | Casner, R.G. / Shapiro, L. | ||||||
| Funding support | China, 1items
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Citation | Journal: Immunity / Year: 2023Title: Antibodies targeting a quaternary site on SARS-CoV-2 spike glycoprotein prevent viral receptor engagement by conformational locking. Authors: Lihong Liu / Ryan G Casner / Yicheng Guo / Qian Wang / Sho Iketani / Jasper Fuk-Woo Chan / Jian Yu / Bernadeta Dadonaite / Manoj S Nair / Hiroshi Mohri / Eswar R Reddem / Shuofeng Yuan / ...Authors: Lihong Liu / Ryan G Casner / Yicheng Guo / Qian Wang / Sho Iketani / Jasper Fuk-Woo Chan / Jian Yu / Bernadeta Dadonaite / Manoj S Nair / Hiroshi Mohri / Eswar R Reddem / Shuofeng Yuan / Vincent Kwok-Man Poon / Chris Chung-Sing Chan / Kwok-Yung Yuen / Zizhang Sheng / Yaoxing Huang / Jesse D Bloom / Lawrence Shapiro / David D Ho / ![]() Abstract: SARS-CoV-2 continues to evolve, with many variants evading clinically authorized antibodies. To isolate monoclonal antibodies (mAbs) with broadly neutralizing capacities against the virus, we ...SARS-CoV-2 continues to evolve, with many variants evading clinically authorized antibodies. To isolate monoclonal antibodies (mAbs) with broadly neutralizing capacities against the virus, we screened serum samples from convalescing COVID-19 patients. We isolated two mAbs, 12-16 and 12-19, which neutralized all SARS-CoV-2 variants tested, including the XBB subvariants, and prevented infection in hamsters challenged with Omicron BA.1 intranasally. Structurally, both antibodies targeted a conserved quaternary epitope located at the interface between the N-terminal domain and subdomain 1, uncovering a site of vulnerability on SARS-CoV-2 spike. These antibodies prevented viral receptor engagement by locking the receptor-binding domain (RBD) of spike in the down conformation, revealing a mechanism of virus neutralization for non-RBD antibodies. Deep mutational scanning showed that SARS-CoV-2 could mutate to escape 12-19, but such mutations are rarely found in circulating viruses. Antibodies 12-16 and 12-19 hold promise as prophylactic agents for immunocompromised persons who do not respond robustly to COVID-19 vaccines. | ||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 7ukl.cif.gz | 675.9 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb7ukl.ent.gz | 550.3 KB | Display | PDB format |
| PDBx/mmJSON format | 7ukl.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 7ukl_validation.pdf.gz | 1.5 MB | Display | wwPDB validaton report |
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| Full document | 7ukl_full_validation.pdf.gz | 1.5 MB | Display | |
| Data in XML | 7ukl_validation.xml.gz | 111.3 KB | Display | |
| Data in CIF | 7ukl_validation.cif.gz | 168.6 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/uk/7ukl ftp://data.pdbj.org/pub/pdb/validation_reports/uk/7ukl | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 26583MC ![]() 7ukmC C: citing same article ( M: map data used to model this data |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
| #1: Antibody | Mass: 11669.789 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)#2: Protein | Mass: 141205.312 Da / Num. of mol.: 3 / Mutation: D614G Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: S, 2 / Production host: Homo sapiens (human) / References: UniProt: P0DTC2#3: Antibody | Mass: 14604.067 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)#4: Sugar | ChemComp-NAG / Has ligand of interest | N | Has protein modification | Y | |
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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: Antibody 12-16 in complex with prefusion SARS-CoV-2 Spike glycoprotein Type: COMPLEX / Entity ID: #1-#3 / Source: MULTIPLE SOURCES |
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| Molecular weight | Experimental value: NO |
| Source (natural) | Organism: ![]() |
| Source (recombinant) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 5.5 |
| Specimen | Conc.: 1 mg/ml / 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: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: -2000 nm / Nominal defocus min: -800 nm |
| Image recording | Electron dose: 58 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||
| 3D reconstruction | Resolution: 3.09 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 463850 / Symmetry type: POINT |
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About Yorodumi



Homo sapiens (human)

China, 1items
Citation



PDBj








FIELD EMISSION GUN