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Yorodumi- PDB-7k9h: SARS-CoV-2 Spike in complex with neutralizing Fab 2B04 (one up, t... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 7k9h | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Title | SARS-CoV-2 Spike in complex with neutralizing Fab 2B04 (one up, two down conformation) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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 Keywords | VIRAL PROTEIN/IMMUNE SYSTEM / SARS-CoV-2 / Neutralizing antibody / ACE2-competitive / Receptor-binding domain / VIRAL PROTEIN-IMMUNE SYSTEM complex / Structural Genomics / Center for Structural Genomics of Infectious Diseases / CSGID | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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 / entry receptor-mediated virion attachment to host cell / membrane fusion / 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 | ![]() ![]()  | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 Authors | Errico, J.M. / Fremont, D.H. / Center for Structural Genomics of Infectious Diseases (CSGID) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Funding support |   United States, 2items 
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 Citation |  Journal: Cell Rep / Year: 2021Title: Structural mechanism of SARS-CoV-2 neutralization by two murine antibodies targeting the RBD. Authors: John M Errico / Haiyan Zhao / Rita E Chen / Zhuoming Liu / James Brett Case / Meisheng Ma / Aaron J Schmitz / Michael J Rau / James A J Fitzpatrick / Pei-Yong Shi / Michael S Diamond / Sean ...Authors: John M Errico / Haiyan Zhao / Rita E Chen / Zhuoming Liu / James Brett Case / Meisheng Ma / Aaron J Schmitz / Michael J Rau / James A J Fitzpatrick / Pei-Yong Shi / Michael S Diamond / Sean P J Whelan / Ali H Ellebedy / Daved H Fremont / ![]() Abstract: The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has necessitated the rapid development of antibody-based therapies and vaccines as countermeasures. Here, we use cryoelectron ...The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has necessitated the rapid development of antibody-based therapies and vaccines as countermeasures. Here, we use cryoelectron microscopy (cryo-EM) to characterize two protective anti-SARS-CoV-2 murine monoclonal antibodies (mAbs) in complex with the spike protein, revealing similarities between epitopes targeted by human and murine B cells. The more neutralizing mAb, 2B04, binds the receptor-binding motif (RBM) of the receptor-binding domain (RBD) and competes with angiotensin-converting enzyme 2 (ACE2). By contrast, 2H04 binds adjacent to the RBM and does not compete for ACE2 binding. Naturally occurring sequence variants of SARS-CoV-2 and corresponding neutralization escape variants selected in vitro map to our structurally defined epitopes, suggesting that SARS-CoV-2 might evade therapeutic antibodies with a limited set of mutations, underscoring the importance of combination mAb therapeutics. Finally, we show that 2B04 neutralizes SARS-CoV-2 infection by preventing ACE2 engagement, whereas 2H04 reduces host cell attachment without directly disrupting ACE2-RBM interactions, providing distinct inhibitory mechanisms used by RBD-specific mAbs.  | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Structure visualization
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| Structure viewer | Molecule:  Molmil Jmol/JSmol | 
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Downloads & links
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Download
| PDBx/mmCIF format |  7k9h.cif.gz | 624.2 KB | Display |  PDBx/mmCIF format | 
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| PDB format |  pdb7k9h.ent.gz | 503.5 KB | Display |  PDB format | 
| PDBx/mmJSON format |  7k9h.json.gz | Tree view |  PDBx/mmJSON format | |
| Others |  Other downloads | 
-Validation report
| Summary document |  7k9h_validation.pdf.gz | 4 MB | Display |  wwPDB validaton report | 
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| Full document |  7k9h_full_validation.pdf.gz | 4.1 MB | Display | |
| Data in XML |  7k9h_validation.xml.gz | 102.7 KB | Display | |
| Data in CIF |  7k9h_validation.cif.gz | 159.6 KB | Display | |
| Arichive directory |  https://data.pdbj.org/pub/pdb/validation_reports/k9/7k9h ftp://data.pdbj.org/pub/pdb/validation_reports/k9/7k9h | HTTPS FTP  | 
-Related structure data
| Related structure data | ![]() 22748MC ![]() 7k9iC ![]() 7k9jC ![]() 7k9kC 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: 139316.375 Da / Num. of mol.: 3 / Mutation: R685A, R686*, A687*, R688*, K989P, V990P Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: S, 2 / Cell line (production host): HEK293 / Production host:  Homo sapiens (human) / References: UniProt: P0DTC2 | 
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-Antibody , 2 types, 4 molecules HILM   
| #2: Antibody | Mass: 13162.778 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]()  Homo sapiens (human)#3: Antibody | Mass: 11530.766 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]()  Homo sapiens (human) | 
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-Sugars , 5 types, 44 molecules 
| #4: 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 #5: 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 #6: Polysaccharide | Source method: isolated from a genetically manipulated source #7: Polysaccharide | Source method: isolated from a genetically manipulated source #8: Sugar |  | 
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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 | Experimental value: NO | |||||||||||||||||||||||||||||||||||
| Source (natural) | 
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| Source (recombinant) | 
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| Details of virus | Empty: NO / Enveloped: YES / Isolate: STRAIN / Type: VIRION | |||||||||||||||||||||||||||||||||||
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| Vitrification | Chamber temperature: 298 K / Cryogen name: ETHANE / Details: 20s wait time 2s blot time / Entry-ID: 7K9H / Humidity: 100 % / Instrument: FEI VITROBOT MARK IV 
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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 magnification: 105000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 500 nm / Cs: 0.01 mm / Alignment procedure: ZEMLIN TABLEAU | 
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature (max): 80 K / Temperature (min): 80 K | 
| Image recording | Average exposure time: 9 sec. / Electron dose: 67 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) | 
| EM imaging optics | Energyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV Spherical aberration corrector: Microscope was modified with a Cs corrector.  | 
| Image scans | Width: 3838 / Height: 3710 / Movie frames/image: 45 / Used frames/image: 1-45 | 
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 1842978 | ||||||||||||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 162281 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
| Atomic model building | Space: REAL | ||||||||||||||||||||||||||||||||||||||||
| Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2  | ||||||||||||||||||||||||||||||||||||||||
| Displacement parameters | Biso mean: 114.39 Å2 | ||||||||||||||||||||||||||||||||||||||||
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About Yorodumi






United States, 2items 
Citation
UCSF Chimera
















PDBj






Homo sapiens (human)
