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- EMDB-23011: Structural impact on SARS-CoV-2 spike protein by D614G substitution -

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Basic information

Entry
Database: EMDB / ID: EMD-23011
TitleStructural impact on SARS-CoV-2 spike protein by D614G substitution
Map data
Sampleopen state( one RBD up) of pre-fusion SARS-CoV-2 D614G mutant spike glycoprotein:
Spike glycoproteinPeplomer / ligand
Function / homology
Function and homology information


Translation of structural proteins / Virion Assembly and Release / Maturation of spike protein / suppression by virus of host tetherin activity / Attachment and Entry / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / receptor-mediated virion attachment to host cell / endoplasmic reticulum-Golgi intermediate compartment / viral translation / host cell surface receptor binding ...Translation of structural proteins / Virion Assembly and Release / Maturation of spike protein / suppression by virus of host tetherin activity / Attachment and Entry / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / receptor-mediated virion attachment to host cell / endoplasmic reticulum-Golgi intermediate compartment / viral translation / host cell surface receptor binding / endocytosis involved in viral entry into host cell / endocytic vesicle membrane / fusion of virus membrane with host plasma membrane / viral protein processing / suppression by virus of host type I interferon-mediated signaling pathway / fusion of virus membrane with host endosome membrane / viral envelope / viral entry into host cell / : / endoplasmic reticulum lumen / host cell plasma membrane / virion membrane / integral component of membrane / identical protein binding
Similarity search - Function
Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 1 (HR1) region profile. / Spike glycoprotein, betacoronavirus / Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus / Betacoronavirus spike glycoprotein S1, receptor binding / Spike receptor binding domain superfamily, coronavirus / : ...Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 1 (HR1) region profile. / Spike glycoprotein, betacoronavirus / Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus / Betacoronavirus spike glycoprotein S1, receptor binding / Spike receptor binding domain superfamily, coronavirus / : / Betacoronavirus-like spike glycoprotein S1, N-terminal / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Spike glycoprotein S2 superfamily, coronavirus / Coronavirus spike glycoprotein S1, C-terminal / Spike glycoprotein S2, coronavirus / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S2
Similarity search - Domain/homology
Biological speciesSevere acute respiratory syndrome coronavirus 2
Methodsingle particle reconstruction / cryo EM / Resolution: 3.5 Å
AuthorsZhang J / Cai YF / Xiao TS / Lu JM / Peng HQ / Sterling SM / Walsh Jr RM / Volloch SR / Zhu HS / Woosley AN ...Zhang J / Cai YF / Xiao TS / Lu JM / Peng HQ / Sterling SM / Walsh Jr RM / Volloch SR / Zhu HS / Woosley AN / Yang W / Sliz P / Chen B
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI147884 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI141002 United States
CitationJournal: Science / Year: 2021
Title: Structural impact on SARS-CoV-2 spike protein by D614G substitution.
Authors: Jun Zhang / Yongfei Cai / Tianshu Xiao / Jianming Lu / Hanqin Peng / Sarah M Sterling / Richard M Walsh / Sophia Rits-Volloch / Haisun Zhu / Alec N Woosley / Wei Yang / Piotr Sliz / Bing Chen /
Abstract: Substitution for aspartic acid (D) by glycine (G) at position 614 in the spike (S) protein of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) appears to facilitate rapid viral spread. ...Substitution for aspartic acid (D) by glycine (G) at position 614 in the spike (S) protein of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) appears to facilitate rapid viral spread. The G614 strain and its recent variants are now the dominant circulating forms. Here, we report cryo-electron microscopy structures of a full-length G614 S trimer, which adopts three distinct prefusion conformations that differ primarily by the position of one receptor-binding domain. A loop disordered in the D614 S trimer wedges between domains within a protomer in the G614 spike. This added interaction appears to prevent premature dissociation of the G614 trimer-effectively increasing the number of functional spikes and enhancing infectivity-and to modulate structural rearrangements for membrane fusion. These findings extend our understanding of viral entry and suggest an improved immunogen for vaccine development.
History
DepositionNov 20, 2020-
Header (metadata) releaseMar 24, 2021-
Map releaseMar 24, 2021-
UpdateMay 12, 2021-
Current statusMay 12, 2021Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.008
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.008
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7krr
  • Surface level: 0.008
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

Downloads & links

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Map

FileDownload / File: emd_23011.map.gz / Format: CCP4 / Size: 421.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 480 pix.
= 396. Å
0.83 Å/pix.
x 480 pix.
= 396. Å
0.83 Å/pix.
x 480 pix.
= 396. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.825 Å
Density
Contour LevelBy AUTHOR: 0.005 / Movie #1: 0.008
Minimum - Maximum-0.023043802 - 0.04852705
Average (Standard dev.)8.992841e-05 (±0.0012071739)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions480480480
Spacing480480480
CellA=B=C: 396.0 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.8250.8250.825
M x/y/z480480480
origin x/y/z0.0000.0000.000
length x/y/z396.000396.000396.000
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS480480480
D min/max/mean-0.0230.0490.000

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Supplemental data

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Additional map: refined map with top mask

Fileemd_23011_additional_1.map
Annotationrefined map with top mask
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

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Sample components

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Entire open state( one RBD up) of pre-fusion SARS-CoV-2 D614G mutant spi...

EntireName: open state( one RBD up) of pre-fusion SARS-CoV-2 D614G mutant spike glycoprotein
Details: open state( one RBD up) of pre-fusion SARS-CoV-2 D614G mutant spike glycoprotein
Number of components: 3

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Component #1: protein, open state( one RBD up) of pre-fusion SARS-CoV-2 D614G m...

ProteinName: open state( one RBD up) of pre-fusion SARS-CoV-2 D614G mutant spike glycoprotein
Details: open state( one RBD up) of pre-fusion SARS-CoV-2 D614G mutant spike glycoprotein
Recombinant expression: No
MassTheoretical: 440 MDa
SourceSpecies: Severe acute respiratory syndrome coronavirus 2
Source (engineered)Expression System: Homo sapiens (human)

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Component #2: protein, Spike glycoprotein

ProteinName: Spike glycoproteinPeplomer / Number of Copies: 3 / Recombinant expression: No
MassTheoretical: 144.858031 kDa
SourceSpecies: Severe acute respiratory syndrome coronavirus 2
Source (engineered)Expression System: Homo sapiens (human)

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Component #3: ligand, 2-acetamido-2-deoxy-beta-D-glucopyranose

LigandName: 2-acetamido-2-deoxy-beta-D-glucopyranose / Number of Copies: 28 / Recombinant expression: No
MassTheoretical: 0.221208 kDa

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Experimental details

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Sample preparation

SpecimenSpecimen state: Particle / Method: cryo EM
Sample solutionSpecimen conc.: 0.3 mg/mL / pH: 7.5
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Temperature: 277.15 K / Humidity: 100 %

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
ImagingMicroscope: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Electron dose: 54.3 e/Å2 / Illumination mode: FLOOD BEAM
LensImaging mode: BRIGHT FIELD
Specimen HolderModel: OTHER
CameraDetector: OTHER

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Image processing

ProcessingMethod: single particle reconstruction / Number of projections: 86353
3D reconstructionSoftware: RELION / Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF

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Atomic model buiding

Modeling #1Input PDB model: 6XR8
Chain ID: A
Output model

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