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- EMDB-31074: Cryo-EM structure of SARS-CoV-2 S-D614G variant in complex with n... -

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Entry
Database: EMDB / ID: EMD-31074
TitleCryo-EM structure of SARS-CoV-2 S-D614G variant in complex with neutralizing antibodies, RBD-chAb-15 and RBD-chAb45
Map dataCryo-EM structure of SARS-CoV-2 S-D614G variant in complex with neutralizing antibodies, RBD-chAb-15 and RBD-chAb-45
Sample
  • Organelle or cellular component: SARS-CoV-2 spike glycoprotein in complex with neutralizing antibodies
Function / homology
Function and homology information


symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / viral translation / host extracellular space / 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 / viral translation / host extracellular space / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / membrane fusion / entry receptor-mediated virion attachment to host cell / 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
Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal / Spike glycoprotein, N-terminal domain superfamily / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus / Spike glycoprotein, betacoronavirus / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus ...Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal / Spike glycoprotein, N-terminal domain superfamily / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus / Spike glycoprotein, betacoronavirus / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus / Betacoronavirus spike glycoprotein S1, receptor binding / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Betacoronavirus-like spike glycoprotein S1, N-terminal / Spike glycoprotein S2 superfamily, coronavirus / Spike glycoprotein S2, coronavirus, heptad repeat 1 / Spike glycoprotein S2, coronavirus, heptad repeat 2 / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 1 (HR1) region profile. / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 2 (HR2) region profile. / Spike glycoprotein S2, coronavirus / Coronavirus spike glycoprotein S2
Similarity search - Domain/homology
Biological speciesSevere acute respiratory syndrome coronavirus 2
Methodsingle particle reconstruction / cryo EM / Resolution: 4.03 Å
AuthorsYang TJ / Yu PY / Chang YC / Wu HC / Hsu STD
Funding support Taiwan, 4 items
OrganizationGrant numberCountry
Ministry of Science and Technology (MoST, Taiwan)109-3114-Y-001-001 Taiwan
Academia Sinica (Taiwan)AS-CDA-109-L08 Taiwan
Academia Sinica (Taiwan)AS-CFII-108-110 Taiwan
Academia Sinica (Taiwan)AS-CFII108-111 Taiwan
CitationJournal: Nat Struct Mol Biol / Year: 2021
Title: Effect of SARS-CoV-2 B.1.1.7 mutations on spike protein structure and function.
Authors: Tzu-Jing Yang / Pei-Yu Yu / Yuan-Chih Chang / Kang-Hao Liang / Hsian-Cheng Tso / Meng-Ru Ho / Wan-Yu Chen / Hsiu-Ting Lin / Han-Chung Wu / Shang-Te Danny Hsu /
Abstract: The B.1.1.7 variant of SARS-CoV-2 first detected in the UK harbors amino-acid substitutions and deletions in the spike protein that potentially enhance host angiotensin conversion enzyme 2 (ACE2) ...The B.1.1.7 variant of SARS-CoV-2 first detected in the UK harbors amino-acid substitutions and deletions in the spike protein that potentially enhance host angiotensin conversion enzyme 2 (ACE2) receptor binding and viral immune evasion. Here we report cryo-EM structures of the spike protein of B.1.1.7 in the apo and ACE2-bound forms. The apo form showed one or two receptor-binding domains (RBDs) in the open conformation, without populating the fully closed state. All three RBDs were engaged in ACE2 binding. The B.1.1.7-specific A570D mutation introduces a molecular switch that could modulate the opening and closing of the RBD. The N501Y mutation introduces a π-π interaction that enhances RBD binding to ACE2 and abolishes binding of a potent neutralizing antibody (nAb). Cryo-EM also revealed how a cocktail of two nAbs simultaneously bind to all three RBDs, and demonstrated the potency of the nAb cocktail to neutralize different SARS-CoV-2 pseudovirus strains, including B.1.1.7.
History
DepositionMar 16, 2021-
Header (metadata) releaseSep 1, 2021-
Map releaseSep 1, 2021-
UpdateMar 16, 2022-
Current statusMar 16, 2022Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.22
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.22
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7eh5
  • Surface level: 0.22
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_31074.png

Downloads & links

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Map

FileDownload / File: emd_31074.map.gz / Format: CCP4 / Size: 274.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationCryo-EM structure of SARS-CoV-2 S-D614G variant in complex with neutralizing antibodies, RBD-chAb-15 and RBD-chAb-45
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.1 Å/pix.
x 416 pix.
= 457.6 Å		1.1 Å/pix.
x 416 pix.
= 457.6 Å		1.1 Å/pix.
x 416 pix.
= 457.6 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.1 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.22 / Movie #1: 0.22
Minimum - Maximum-0.9344159 - 1.9436837
Average (Standard dev.)0.0015434007 (±0.03718466)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions416416416
Spacing416416416
CellA=B=C: 457.6 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.11.11.1
M x/y/z416416416
origin x/y/z0.0000.0000.000
length x/y/z457.600457.600457.600
α/β/γ90.00090.00090.000
start NX/NY/NZ139118109
NX/NY/NZ123164187
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS416416416
D min/max/mean-0.9341.9440.002

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Supplemental data

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Sample components

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Entire : SARS-CoV-2 spike glycoprotein in complex with neutralizing antibodies

EntireName: SARS-CoV-2 spike glycoprotein in complex with neutralizing antibodies
Components
  • Organelle or cellular component: SARS-CoV-2 spike glycoprotein in complex with neutralizing antibodies

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Supramolecule #1: SARS-CoV-2 spike glycoprotein in complex with neutralizing antibodies

SupramoleculeName: SARS-CoV-2 spike glycoprotein in complex with neutralizing antibodies
type: organelle_or_cellular_component / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Details: D614G variants, two neutralizing antibodies RBD-chAb-15 and RBD-chAb-45
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Molecular weightExperimental: 540 KDa
Recombinant expressionOrganism: Homo sapiens (human)

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration1 mg/mL
BufferpH: 7.6
Component:
ConcentrationFormulaName
50.0 mMTris
150.0 mMNaCl
0.02 %sodium azide
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV
Details: blot for 2.5 seconds before plunging; blot force: 0; waiting time: 30s.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 1.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm
Sample stageCooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: cryoSPARC
Startup modelType of model: INSILICO MODEL
Details: generated by ab-initio reconstruction in cryoSparc v2
Final reconstructionApplied symmetry - Point group: C3 (3 fold cyclic) / Resolution.type: BY AUTHOR / Resolution: 4.03 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 79794
Initial angle assignmentType: RANDOM ASSIGNMENT / Software - Name: cryoSPARC
Final angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: cryoSPARC

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