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Yorodumi- PDB-9crd: Cryo-EM structure of SARS-CoV-2 Spike Proteins on intact virions:... -
+Open data
-Basic information
Entry | Database: PDB / ID: 9crd | ||||||||||||
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Title | Cryo-EM structure of SARS-CoV-2 Spike Proteins on intact virions: B.1 variant 1 open RBD | ||||||||||||
Components | Spike glycoprotein | ||||||||||||
Keywords | VIRAL PROTEIN / SARS-CoV-2 variant / B.1 strain | ||||||||||||
Function / homology | Function and homology information Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / 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 / Virion Assembly and Release / host cell surface / 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 / receptor-mediated endocytosis of virus by host cell / membrane fusion / Attachment and Entry / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / receptor ligand activity / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / 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 | Severe acute respiratory syndrome coronavirus 2 | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.5 Å | ||||||||||||
Authors | Ke, Z. / Croll, T.I. / Briggs, J.A.G. | ||||||||||||
Funding support | United Kingdom, European Union, Germany, 3items
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Citation | Journal: EMBO J / Year: 2024 Title: Virion morphology and on-virus spike protein structures of diverse SARS-CoV-2 variants. Authors: Zunlong Ke / Thomas P Peacock / Jonathan C Brown / Carol M Sheppard / Tristan I Croll / Abhay Kotecha / Daniel H Goldhill / Wendy S Barclay / John A G Briggs / Abstract: The evolution of SARS-CoV-2 variants with increased fitness has been accompanied by structural changes in the spike (S) proteins, which are the major target for the adaptive immune response. Single- ...The evolution of SARS-CoV-2 variants with increased fitness has been accompanied by structural changes in the spike (S) proteins, which are the major target for the adaptive immune response. Single-particle cryo-EM analysis of soluble S protein from SARS-CoV-2 variants has revealed this structural adaptation at high resolution. The analysis of S trimers in situ on intact virions has the potential to provide more functionally relevant insights into S structure and virion morphology. Here, we characterized B.1, Alpha, Beta, Gamma, Delta, Kappa, and Mu variants by cryo-electron microscopy and tomography, assessing S cleavage, virion morphology, S incorporation, "in-situ" high-resolution S structures, and the range of S conformational states. We found no evidence for adaptive changes in virion morphology, but describe multiple different positions in the S protein where amino acid changes alter local protein structure. Taken together, our data are consistent with a model where amino acid changes at multiple positions from the top to the base of the spike cause structural changes that can modulate the conformational dynamics of the S protein. | ||||||||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 9crd.cif.gz | 634.7 KB | Display | PDBx/mmCIF format |
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PDB format | pdb9crd.ent.gz | 517.5 KB | Display | PDB format |
PDBx/mmJSON format | 9crd.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 9crd_validation.pdf.gz | 3 MB | Display | wwPDB validaton report |
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Full document | 9crd_full_validation.pdf.gz | 3 MB | Display | |
Data in XML | 9crd_validation.xml.gz | 86.8 KB | Display | |
Data in CIF | 9crd_validation.cif.gz | 134.2 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/cr/9crd ftp://data.pdbj.org/pub/pdb/validation_reports/cr/9crd | HTTPS FTP |
-Related structure data
Related structure data | 45864MC 9crcC 9creC 9crfC 9crgC 9crhC 9criC C: citing same article (ref.) M: map data used to model this data |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
#1: Protein | Mass: 141253.422 Da / Num. of mol.: 3 / Source method: isolated from a natural source Source: (natural) Severe acute respiratory syndrome coronavirus 2 References: UniProt: P0DTC2 #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: 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 |
-Sample preparation
Component | Name: Severe acute respiratory syndrome coronavirus 2 / Type: VIRUS / Entity ID: #1 / Source: NATURAL |
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Source (natural) | Organism: Severe acute respiratory syndrome coronavirus 2 / Strain: B.1 |
Source (recombinant) | Organism: Homo sapiens (human) |
Details of virus | Empty: NO / Enveloped: YES / Isolate: STRAIN / Type: VIRION |
Natural host | Organism: Homo sapiens |
Buffer solution | pH: 7 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
-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: 1000 nm / Calibrated defocus min: 1000 nm / Calibrated defocus max: 3000 nm / Cs: 2.7 mm |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of real images: 5598 |
-Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||
Particle selection | Num. of particles selected: 908151 | ||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||
3D reconstruction | Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 37829 / Algorithm: BACK PROJECTION / Symmetry type: POINT | ||||||||||||||||||||
EM volume selection | Num. of tomograms: 42 / Num. of volumes extracted: 400000 | ||||||||||||||||||||
Atomic model building | Protocol: FLEXIBLE FIT | ||||||||||||||||||||
Atomic model building | 3D fitting-ID: 1 / Source name: PDB / Type: experimental model
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