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- PDB-7eh5: Cryo-EM structure of SARS-CoV-2 S-D614G variant in complex with n... -

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Basic information

Entry
Database: PDB / ID: 7eh5
TitleCryo-EM structure of SARS-CoV-2 S-D614G variant in complex with neutralizing antibodies, RBD-chAb15 and RBD-chAb45
Components
  • RBD-chAb15, heavy chain
  • RBD-chAb15, light chain
  • RBD-chAb45, heavy chain
  • RBD-chAb45, light chain
  • Spike glycoprotein
KeywordsVIRAL PROTEIN / SARS-CoV-2 / Spike protein / Neutralizing antibody
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 / host extracellular space / viral translation / 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 / host extracellular space / viral translation / 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 / membrane fusion / 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 glycoprotein, N-terminal domain / 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 glycoprotein, N-terminal domain / 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 / Jelly Rolls / Immunoglobulins / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
Biological speciesSevere acute respiratory syndrome coronavirus 2
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4 Å
AuthorsYang, T.J. / Yu, P.Y. / Chang, Y.C. / Wu, H.C. / Hsu, S.T.D.
Funding support Taiwan, 4items
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 28, 2021Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Sep 1, 2021Provider: repository / Type: Initial release
Revision 1.1Jan 5, 2022Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.2Nov 20, 2024Group: Data collection / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / pdbx_entry_details / pdbx_modification_feature
Item: _pdbx_entry_details.has_protein_modification
Revision 1.3Jul 2, 2025Group: Data collection / Category: em_software / Item: _em_software.name

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Structure visualization

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Structure viewerMolecule:
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Assembly

Deposited unit
A: Spike glycoprotein
H: RBD-chAb45, heavy chain
O: RBD-chAb15, light chain
I: RBD-chAb45, heavy chain
J: RBD-chAb45, heavy chain
F: RBD-chAb15, heavy chain
L: RBD-chAb45, light chain
M: RBD-chAb45, light chain
N: RBD-chAb45, light chain
B: Spike glycoprotein
C: Spike glycoprotein
D: RBD-chAb15, heavy chain
E: RBD-chAb15, heavy chain
P: RBD-chAb15, light chain
Q: RBD-chAb15, light chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)879,17663
Polymers863,07215
Non-polymers16,10448
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration, microscopy
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area53150 Å2
ΔGint-23 kcal/mol
Surface area220510 Å2

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Components

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Protein , 1 types, 3 molecules ABC

#1: Protein Spike glycoprotein / S glycoprotein / E2 / Peplomer protein


Mass: 142178.297 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus 2
Gene: S, 2 / Production host: Homo sapiens (human) / References: UniProt: P0DTC2

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Antibody , 4 types, 12 molecules HIJOPQFDELMN

#2: Antibody RBD-chAb45, heavy chain


Mass: 49409.348 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#3: Antibody RBD-chAb15, light chain


Mass: 23467.893 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#4: Antibody RBD-chAb15, heavy chain


Mass: 49110.059 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#5: Antibody RBD-chAb45, light chain


Mass: 23524.975 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)

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Sugars , 2 types, 48 molecules

#6: Polysaccharide...
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 27
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}LINUCSPDB-CARE
#7: Sugar...
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 21 / Source method: obtained synthetically / Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Details

Has ligand of interestN
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: SARS-CoV-2 spike glycoprotein in complex with neutralizing antibodies
Type: ORGANELLE OR CELLULAR COMPONENT / Entity ID: #1-#5 / Source: RECOMBINANT
Molecular weightValue: 1.5 MDa / Experimental value: YES
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.6
Buffer component
IDConc.NameBuffer-ID
150 mMTris1
2150 mMNaCl1
30.02 %sodium azide1
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K
Details: blot for 2.5 seconds before plunging; blot force: 0; waiting time: 30s

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Cs: 2.7 mm
Specimen holderCryogen: NITROGEN
Image recordingElectron dose: 1 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.19.1_4122: / Classification: refinement
EM software
IDNameCategory
2EPUimage acquisition
8PHENIXmodel refinement
11cryoSPARCfinal Euler assignment
13cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C3 (3 fold cyclic)
3D reconstructionResolution: 4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 79794 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00235766
ELECTRON MICROSCOPYf_angle_d0.49648615
ELECTRON MICROSCOPYf_dihedral_angle_d4.2025127
ELECTRON MICROSCOPYf_chiral_restr0.0465670
ELECTRON MICROSCOPYf_plane_restr0.0046156

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