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Open data
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Basic information
Entry | Database: PDB / ID: 7s3n | |||||||||
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Title | SARS-CoV-2 S stem helix peptide bound to Fab22 | |||||||||
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![]() | VIRAL PROTEIN/IMMUNE SYSTEM / Spike / Fusion / Antibody / 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 / host cell endoplasmic reticulum-Golgi intermediate compartment membrane ...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 / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / entry receptor-mediated virion attachment to host cell / receptor-mediated endocytosis of virus by host cell / Attachment and Entry / membrane fusion / 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 | ![]() ![]() ![]() | |||||||||
![]() | Goldsmith, J.A. / McLellan, J.S. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Stabilized coronavirus spike stem elicits a broadly protective antibody. Authors: Ching-Lin Hsieh / Anne P Werner / Sarah R Leist / Laura J Stevens / Ester Falconer / Jory A Goldsmith / Chia-Wei Chou / Olubukola M Abiona / Ande West / Kathryn Westendorf / Krithika ...Authors: Ching-Lin Hsieh / Anne P Werner / Sarah R Leist / Laura J Stevens / Ester Falconer / Jory A Goldsmith / Chia-Wei Chou / Olubukola M Abiona / Ande West / Kathryn Westendorf / Krithika Muthuraman / Ethan J Fritch / Kenneth H Dinnon / Alexandra Schäfer / Mark R Denison / James D Chappell / Ralph S Baric / Barney S Graham / Kizzmekia S Corbett / Jason S McLellan / ![]() ![]() Abstract: Current coronavirus (CoV) vaccines primarily target immunodominant epitopes in the S1 subunit, which are poorly conserved and susceptible to escape mutations, thus threatening vaccine efficacy. Here, ...Current coronavirus (CoV) vaccines primarily target immunodominant epitopes in the S1 subunit, which are poorly conserved and susceptible to escape mutations, thus threatening vaccine efficacy. Here, we use structure-guided protein engineering to remove the S1 subunit from the Middle East respiratory syndrome (MERS)-CoV spike (S) glycoprotein and develop stabilized stem (SS) antigens. Vaccination with MERS SS elicits cross-reactive β-CoV antibody responses and protects mice against lethal MERS-CoV challenge. High-throughput screening of antibody-secreting cells from MERS SS-immunized mice led to the discovery of a panel of cross-reactive monoclonal antibodies. Among them, antibody IgG22 binds with high affinity to both MERS-CoV and severe acute respiratory syndrome (SARS)-CoV-2 S proteins, and a combination of electron microscopy and crystal structures localizes the epitope to a conserved coiled-coil region in the S2 subunit. Passive transfer of IgG22 protects mice against both MERS-CoV and SARS-CoV-2 challenge. Collectively, these results provide a proof of principle for cross-reactive CoV antibodies and inform the development of pan-CoV vaccines and therapeutic antibodies. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 220 KB | Display | ![]() |
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PDB format | ![]() | 153.3 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 440.9 KB | Display | ![]() |
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Full document | ![]() | 445 KB | Display | |
Data in XML | ![]() | 21.3 KB | Display | |
Data in CIF | ![]() | 31.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7s3mC ![]() 7m53S S: Starting model for refinement C: citing same article ( |
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Similar structure data |
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Assembly
Deposited unit | ![]()
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Unit cell |
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Components
#1: Protein/peptide | Mass: 2303.479 Da / Num. of mol.: 1 / Fragment: stem helix peptide (UNP residues 1146-1164) / Source method: obtained synthetically Source: (synth.) ![]() ![]() References: UniProt: P0DTC2 |
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#2: Antibody | Mass: 23892.822 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
#3: Antibody | Mass: 23822.580 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
#4: Water | ChemComp-HOH / |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.57 Å3/Da / Density % sol: 52.07 % |
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Crystal grow | Temperature: 293 K / Method: vapor diffusion, sitting drop / Details: 0.1 M sodium citrate, pH 5.5, 23% PEG8000 |
-Data collection
Diffraction | Mean temperature: 80 K / Serial crystal experiment: N |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: ADSC QUANTUM 315r / Detector: CCD / Date: Jun 16, 2021 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.979 Å / Relative weight: 1 |
Reflection | Resolution: 1.9→87.55 Å / Num. obs: 38944 / % possible obs: 97.3 % / Redundancy: 3.6 % / Biso Wilson estimate: 25.51 Å2 / CC1/2: 0.987 / Net I/σ(I): 5.1 |
Reflection shell | Resolution: 1.9→1.94 Å / Num. unique obs: 2343 / CC1/2: 0.878 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB entry 7M53 Resolution: 1.9→43.78 Å / SU ML: 0.1817 / Cross valid method: FREE R-VALUE / σ(F): 1.4 / Phase error: 25.1766 Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 38.5 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 1.9→43.78 Å
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Refine LS restraints |
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LS refinement shell |
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Refinement TLS params. | Method: refined / Refine-ID: X-RAY DIFFRACTION
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Refinement TLS group | Refine-ID: X-RAY DIFFRACTION
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