+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-11867 | |||||||||
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Title | Cryo-ET of SARS-CoV-2 virions released from VerE6 cells | |||||||||
Map data | ||||||||||
Sample |
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Biological species | Severe acute respiratory syndrome coronavirus 2 | |||||||||
Method | electron tomography / cryo EM | |||||||||
Authors | Klein S / Cortese M / Winter SL / Wachsmuth-Melm M / Neufeldt CJ / Cerikan B / Stanifer ML / Boulant S / Bartenschlager R / Chlanda P | |||||||||
Funding support | Germany, 1 items
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Citation | Journal: Nat Commun / Year: 2020 Title: SARS-CoV-2 structure and replication characterized by in situ cryo-electron tomography. Authors: Steffen Klein / Mirko Cortese / Sophie L Winter / Moritz Wachsmuth-Melm / Christopher J Neufeldt / Berati Cerikan / Megan L Stanifer / Steeve Boulant / Ralf Bartenschlager / Petr Chlanda / Abstract: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent of the COVID19 pandemic, is a highly pathogenic β-coronavirus. As other coronaviruses, SARS-CoV-2 is enveloped, ...Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent of the COVID19 pandemic, is a highly pathogenic β-coronavirus. As other coronaviruses, SARS-CoV-2 is enveloped, replicates in the cytoplasm and assembles at intracellular membranes. Here, we structurally characterize the viral replication compartment and report critical insights into the budding mechanism of the virus, and the structure of extracellular virions close to their native state by in situ cryo-electron tomography and subtomogram averaging. We directly visualize RNA filaments inside the double membrane vesicles, compartments associated with viral replication. The RNA filaments show a diameter consistent with double-stranded RNA and frequent branching likely representing RNA secondary structures. We report that assembled S trimers in lumenal cisternae do not alone induce membrane bending but laterally reorganize on the envelope during virion assembly. The viral ribonucleoprotein complexes (vRNPs) are accumulated at the curved membrane characteristic for budding sites suggesting that vRNP recruitment is enhanced by membrane curvature. Subtomogram averaging shows that vRNPs are distinct cylindrical assemblies. We propose that the genome is packaged around multiple separate vRNP complexes, thereby allowing incorporation of the unusually large coronavirus genome into the virion while maintaining high steric flexibility between the vRNPs. #1: Journal: Biorxiv / Year: 2020 Title: SARS-CoV-2 structure and replication characterized by in situ cryo-electron tomography Authors: Klein S / Cortese M / Winter SL / Wachsmuth-Melm M / Neufeldt CJ / Cerikan B / Stanifer ML / Boulant S / Bartenschlager R / Chlanda P | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_11867.map.gz | 518.7 MB | EMDB map data format | |
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Header (meta data) | emd-11867-v30.xml emd-11867.xml | 9.5 KB 9.5 KB | Display Display | EMDB header |
Images | emd_11867.png | 72.7 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-11867 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-11867 | HTTPS FTP |
-Validation report
Summary document | emd_11867_validation.pdf.gz | 252.9 KB | Display | EMDB validaton report |
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Full document | emd_11867_full_validation.pdf.gz | 252.4 KB | Display | |
Data in XML | emd_11867_validation.xml.gz | 5 KB | Display | |
Data in CIF | emd_11867_validation.cif.gz | 6 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-11867 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-11867 | HTTPS FTP |
-Related structure data
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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-Map
File | Download / File: emd_11867.map.gz / Format: CCP4 / Size: 681.8 MB / Type: IMAGE STORED AS SIGNED BYTE | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Voxel size | X=Y=Z: 4.137 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
-Entire : VeroE6 cells infected with SARS-CoV-2
Entire | Name: VeroE6 cells infected with SARS-CoV-2 |
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Components |
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-Supramolecule #1: VeroE6 cells infected with SARS-CoV-2
Supramolecule | Name: VeroE6 cells infected with SARS-CoV-2 / type: cell / ID: 1 / Parent: 0 |
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Source (natural) | Organism: Severe acute respiratory syndrome coronavirus 2 |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | electron tomography |
Aggregation state | cell |
-Sample preparation
Buffer | pH: 7 |
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Vitrification | Cryogen name: ETHANE / Chamber humidity: 70 % / Chamber temperature: 24 K / Instrument: LEICA EM GP |
Sectioning | Other: NO SECTIONING |
Fiducial marker | Manufacturer: Aurion / Diameter: 10 nm |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 3.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Final reconstruction | Number images used: 41 |
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