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- PDB-6xcm: Structure of the SARS-CoV-2 spike glycoprotein in complex with th... -
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Open data
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Basic information
Entry | Database: PDB / ID: 6xcm | |||||||||
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Title | Structure of the SARS-CoV-2 spike glycoprotein in complex with the C105 neutralizing antibody Fab fragment (state 1) | |||||||||
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![]() | VIRAL PROTEIN/IMMUNE SYSTEM / SARS-CoV-2 / Spike glycoprotein / COVID-19 / monoclonal neutralizing antibody / Fabs / nsEMPEM / VIRAL PROTEIN-IMMUNE SYSTEM complex | |||||||||
Function / homology | ![]() Maturation of spike protein / viral translation / Translation of Structural Proteins / host cell surface / Virion Assembly and Release / host extracellular space / symbiont-mediated-mediated suppression 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 / host cell surface / Virion Assembly and Release / host extracellular space / symbiont-mediated-mediated suppression 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 / membrane fusion / Attachment and Entry / 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 / 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: 3.42 Å | |||||||||
![]() | Barnes, C.O. / Bjorkman, P.J. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structures of Human Antibodies Bound to SARS-CoV-2 Spike Reveal Common Epitopes and Recurrent Features of Antibodies. Authors: Christopher O Barnes / Anthony P West / Kathryn E Huey-Tubman / Magnus A G Hoffmann / Naima G Sharaf / Pauline R Hoffman / Nicholas Koranda / Harry B Gristick / Christian Gaebler / Frauke ...Authors: Christopher O Barnes / Anthony P West / Kathryn E Huey-Tubman / Magnus A G Hoffmann / Naima G Sharaf / Pauline R Hoffman / Nicholas Koranda / Harry B Gristick / Christian Gaebler / Frauke Muecksch / Julio C Cetrulo Lorenzi / Shlomo Finkin / Thomas Hägglöf / Arlene Hurley / Katrina G Millard / Yiska Weisblum / Fabian Schmidt / Theodora Hatziioannou / Paul D Bieniasz / Marina Caskey / Davide F Robbiani / Michel C Nussenzweig / Pamela J Bjorkman / ![]() Abstract: Neutralizing antibody responses to coronaviruses mainly target the receptor-binding domain (RBD) of the trimeric spike. Here, we characterized polyclonal immunoglobulin Gs (IgGs) and Fabs from COVID- ...Neutralizing antibody responses to coronaviruses mainly target the receptor-binding domain (RBD) of the trimeric spike. Here, we characterized polyclonal immunoglobulin Gs (IgGs) and Fabs from COVID-19 convalescent individuals for recognition of coronavirus spikes. Plasma IgGs differed in their focus on RBD epitopes, recognition of alpha- and beta-coronaviruses, and contributions of avidity to increased binding/neutralization of IgGs over Fabs. Using electron microscopy, we examined specificities of polyclonal plasma Fabs, revealing recognition of both S1 and RBD epitopes on SARS-CoV-2 spike. Moreover, a 3.4 Å cryo-electron microscopy (cryo-EM) structure of a neutralizing monoclonal Fab-spike complex revealed an epitope that blocks ACE2 receptor binding. Modeling based on these structures suggested different potentials for inter-spike crosslinking by IgGs on viruses, and characterized IgGs would not be affected by identified SARS-CoV-2 spike mutations. Overall, our studies structurally define a recurrent anti-SARS-CoV-2 antibody class derived from VH3-53/VH3-66 and similarity to a SARS-CoV VH3-30 antibody, providing criteria for evaluating vaccine-elicited antibodies. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 621 KB | Display | ![]() |
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PDB format | ![]() | 496.8 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.8 MB | Display | ![]() |
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Full document | ![]() | 1.9 MB | Display | |
Data in XML | ![]() | 102.9 KB | Display | |
Data in CIF | ![]() | 157 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 22127MC ![]() 6xcaC ![]() 6xcnC 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
Deposited unit | ![]()
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Components
-Protein , 1 types, 3 molecules ABC
#1: Protein | Mass: 139788.953 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: S, 2 / Plasmid: pCAGGS / Cell line (production host): HeLa / Production host: ![]() |
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-Antibody , 2 types, 4 molecules HNLS
#2: Antibody | Mass: 24662.506 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #3: Antibody | Mass: 22893.227 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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-Sugars , 5 types, 43 molecules 
#4: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source #5: Polysaccharide | alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source #6: Polysaccharide | Source method: isolated from a genetically manipulated source #7: Polysaccharide | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source #8: Sugar | ChemComp-NAG / |
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-Details
Has ligand of interest | N |
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Has protein modification | Y |
-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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Molecular weight | Value: 0.7 MDa / Experimental value: YES | ||||||||||||||||||||||||
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Source (recombinant) |
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Buffer solution | pH: 8 | ||||||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 1.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES Details: Monodisperse sample taken after size-exclusion chromatography | ||||||||||||||||||||||||
Specimen support | Details: 60 s glow discharge in air at 0.20 mA current / Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: UltrAuFoil R1.2/1.3 | ||||||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 295 K Details: 3 microliters added, blotted for 3 s with 0 blot force |
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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 / Details: Collected with 3x3 pattern and beam image shift |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 105000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Average exposure time: 1.89 sec. / Electron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 5940 |
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Processing
Software | Name: PHENIX / Version: 1.17.1_3660: / Classification: refinement | ||||||||||||||||||||||||||||||||||||
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EM software |
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Image processing | Details: Gain-normalized and collected in counting mode with 40 frames per movie | ||||||||||||||||||||||||||||||||||||
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.42 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 58873 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||
Atomic model building | B value: 90 / Protocol: RIGID BODY FIT / Space: REAL / Target criteria: Correlation coefficient | ||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 6VYB Pdb chain-ID: B / Accession code: 6VYB / Source name: PDB / Type: experimental model | ||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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