+Open data
-Basic information
Entry | Database: PDB / ID: 6zgf | |||||||||
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Title | Spike Protein of RaTG13 Bat Coronavirus in Closed Conformation | |||||||||
Components | Spike glycoprotein | |||||||||
Keywords | VIRAL PROTEIN / SARS-CoV-2 / Spike / Virus Glycoprotein / Coronavirus | |||||||||
Function / homology | Function and homology information endocytosis involved in viral entry into host cell / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / receptor-mediated virion attachment to host cell / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / host cell plasma membrane / virion membrane / membrane Similarity search - Function | |||||||||
Biological species | Bat coronavirus RaTG13 | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å | |||||||||
Authors | Wrobel, A.G. / Benton, D.J. / Rosenthal, P.B. / Gamblin, S.J. | |||||||||
Funding support | United Kingdom, 2items
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Citation | Journal: Nat Struct Mol Biol / Year: 2020 Title: SARS-CoV-2 and bat RaTG13 spike glycoprotein structures inform on virus evolution and furin-cleavage effects. Authors: Antoni G Wrobel / Donald J Benton / Pengqi Xu / Chloë Roustan / Stephen R Martin / Peter B Rosenthal / John J Skehel / Steven J Gamblin / Abstract: SARS-CoV-2 is thought to have emerged from bats, possibly via a secondary host. Here, we investigate the relationship of spike (S) glycoprotein from SARS-CoV-2 with the S protein of a closely related ...SARS-CoV-2 is thought to have emerged from bats, possibly via a secondary host. Here, we investigate the relationship of spike (S) glycoprotein from SARS-CoV-2 with the S protein of a closely related bat virus, RaTG13. We determined cryo-EM structures for RaTG13 S and for both furin-cleaved and uncleaved SARS-CoV-2 S; we compared these with recently reported structures for uncleaved SARS-CoV-2 S. We also biochemically characterized their relative stabilities and affinities for the SARS-CoV-2 receptor ACE2. Although the overall structures of human and bat virus S proteins are similar, there are key differences in their properties, including a more stable precleavage form of human S and about 1,000-fold tighter binding of SARS-CoV-2 to human receptor. These observations suggest that cleavage at the furin-cleavage site decreases the overall stability of SARS-CoV-2 S and facilitates the adoption of the open conformation that is required for S to bind to the ACE2 receptor. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6zgf.cif.gz | 588.2 KB | Display | PDBx/mmCIF format |
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PDB format | pdb6zgf.ent.gz | 491.2 KB | Display | PDB format |
PDBx/mmJSON format | 6zgf.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6zgf_validation.pdf.gz | 3 MB | Display | wwPDB validaton report |
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Full document | 6zgf_full_validation.pdf.gz | 3 MB | Display | |
Data in XML | 6zgf_validation.xml.gz | 101.9 KB | Display | |
Data in CIF | 6zgf_validation.cif.gz | 151.9 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/zg/6zgf ftp://data.pdbj.org/pub/pdb/validation_reports/zg/6zgf | HTTPS FTP |
-Related structure data
Related structure data | 11204MC 6zgeC 6zggC 6zghC 6zgiC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-Protein , 1 types, 3 molecules ABC
#1: Protein | Mass: 141875.578 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Bat coronavirus RaTG13 / Production host: Homo sapiens (human) / References: UniProt: A0A6B9WHD3 |
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-Sugars , 5 types, 57 molecules
#2: 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 #3: Polysaccharide | Source method: isolated from a genetically manipulated source #4: Polysaccharide | Source method: isolated from a genetically manipulated source #5: Polysaccharide | Source method: isolated from a genetically manipulated source #6: Sugar | ChemComp-NAG / |
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-Details
Has ligand of interest | N |
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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 |
-Sample preparation
Component | Name: RaTG13 Bat Coronavirus Spike Glycoprotein Ectodomain / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT |
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Molecular weight | Value: 0.5 MDa / Experimental value: NO |
Source (natural) | Organism: Severe acute respiratory syndrome coronavirus 2 |
Source (recombinant) | Organism: Homo sapiens (human) |
Buffer solution | pH: 8 |
Specimen | Conc.: 0.1 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R2/2 |
Vitrification | Instrument: FEI VITROBOT MARK III / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K |
-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: 3000 nm / Nominal defocus min: 1500 nm / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Average exposure time: 8 sec. / Electron dose: 54.4 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 QUANTUM (4k x 4k) |
EM imaging optics | Energyfilter name: GIF Quantum LS / Energyfilter slit width: 20 eV |
-Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C3 (3 fold cyclic) | ||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 62000 / Algorithm: FOURIER SPACE / Symmetry type: POINT | ||||||||||||||||||||||||||||||||
Atomic model building | Protocol: OTHER / Space: REAL | ||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 6VXX Pdb chain-ID: A |