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- PDB-7kqe: SARS-CoV-2 spike glycoprotein:Fab 3D11 complex -

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Basic information

Entry
Database: PDB / ID: 7kqe
TitleSARS-CoV-2 spike glycoprotein:Fab 3D11 complex
Components
  • Fab 3D11 heavy chain
  • Fab 3D11 light chain
  • Spike glycoprotein
KeywordsVIRAL PROTEIN/IMMUNE SYSTEM / SARS-CoV-2 / Spike / antibody / Fab / VIRAL PROTEIN-IMMUNE SYSTEM complex
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 / suppression by virus 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 / suppression by virus 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
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, betacoronavirus / Spike glycoprotein, N-terminal domain superfamily / 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 S1 subunit, receptor binding domain superfamily, 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, betacoronavirus / Spike glycoprotein, N-terminal domain superfamily / 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 S1 subunit, receptor binding domain superfamily, betacoronavirus / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Betacoronavirus-like spike glycoprotein S1, N-terminal / Betacoronavirus spike glycoprotein S1, receptor binding / 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 superfamily, coronavirus / Spike glycoprotein S2, coronavirus / Coronavirus spike glycoprotein S2
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
Severe acute respiratory syndrome coronavirus 2
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.88 Å
AuthorsAsarnow, D. / Charles, C. / Cheng, Y.
Funding support United States, 3items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)P50AI150476 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)S10OD020054 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)S10OD021741 United States
Citation
Journal: Cell / Year: 2021
Title: Structural insight into SARS-CoV-2 neutralizing antibodies and modulation of syncytia.
Authors: Daniel Asarnow / Bei Wang / Wen-Hsin Lee / Yuanyu Hu / Ching-Wen Huang / Bryan Faust / Patricia Miang Lon Ng / Eve Zi Xian Ngoh / Markus Bohn / David Bulkley / Andrés Pizzorno / Beatrice ...Authors: Daniel Asarnow / Bei Wang / Wen-Hsin Lee / Yuanyu Hu / Ching-Wen Huang / Bryan Faust / Patricia Miang Lon Ng / Eve Zi Xian Ngoh / Markus Bohn / David Bulkley / Andrés Pizzorno / Beatrice Ary / Hwee Ching Tan / Chia Yin Lee / Rabiatul Adawiyah Minhat / Olivier Terrier / Mun Kuen Soh / Frannie Jiuyi Teo / Yvonne Yee Chin Yeap / Shirley Gek Kheng Seah / Conrad En Zuo Chan / Emily Connelly / Nicholas J Young / Sebastian Maurer-Stroh / Laurent Renia / Brendon John Hanson / Manuel Rosa-Calatrava / Aashish Manglik / Yifan Cheng / Charles S Craik / Cheng-I Wang /
Abstract: Infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is initiated by binding of the viral Spike protein to host receptor angiotensin-converting enzyme 2 (ACE2), followed by ...Infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is initiated by binding of the viral Spike protein to host receptor angiotensin-converting enzyme 2 (ACE2), followed by fusion of viral and host membranes. Although antibodies that block this interaction are in emergency use as early coronavirus disease 2019 (COVID-19) therapies, the precise determinants of neutralization potency remain unknown. We discovered a series of antibodies that potently block ACE2 binding but exhibit divergent neutralization efficacy against the live virus. Strikingly, these neutralizing antibodies can inhibit or enhance Spike-mediated membrane fusion and formation of syncytia, which are associated with chronic tissue damage in individuals with COVID-19. As revealed by cryoelectron microscopy, multiple structures of Spike-antibody complexes have distinct binding modes that not only block ACE2 binding but also alter the Spike protein conformational cycle triggered by ACE2 binding. We show that stabilization of different Spike conformations leads to modulation of Spike-mediated membrane fusion with profound implications for COVID-19 pathology and immunity.
#1: Journal: Protein Sci / Year: 2018
Title: UCSF ChimeraX: Meeting modern challenges in visualization and analysis.
Authors: Thomas D Goddard / Conrad C Huang / Elaine C Meng / Eric F Pettersen / Gregory S Couch / John H Morris / Thomas E Ferrin /
Abstract: UCSF ChimeraX is next-generation software for the visualization and analysis of molecular structures, density maps, 3D microscopy, and associated data. It addresses challenges in the size, scope, and ...UCSF ChimeraX is next-generation software for the visualization and analysis of molecular structures, density maps, 3D microscopy, and associated data. It addresses challenges in the size, scope, and disparate types of data attendant with cutting-edge experimental methods, while providing advanced options for high-quality rendering (interactive ambient occlusion, reliable molecular surface calculations, etc.) and professional approaches to software design and distribution. This article highlights some specific advances in the areas of visualization and usability, performance, and extensibility. ChimeraX is free for noncommercial use and is available from http://www.rbvi.ucsf.edu/chimerax/ for Windows, Mac, and Linux.
History
DepositionNov 15, 2020Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 26, 2021Provider: repository / Type: Initial release
Revision 1.1Jun 23, 2021Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.2Oct 23, 2024Group: Data collection / Database references ...Data collection / Database references / Refinement description / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_3d_fitting_list / em_admin / pdbx_entry_details / pdbx_initial_refinement_model / pdbx_modification_feature
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type / _em_admin.last_update

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Structure visualization

Movie
  • Deposited structure unit
  • Imaged by Jmol
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  • Superimposition on EM map
  • EMDB-22997
  • Imaged by UCSF Chimera
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Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
H: Fab 3D11 heavy chain
L: Fab 3D11 light chain
A: Spike glycoprotein
B: Spike glycoprotein
C: Spike glycoprotein
J: Fab 3D11 heavy chain
M: Fab 3D11 light chain
I: Fab 3D11 heavy chain
N: Fab 3D11 light chain


Theoretical massNumber of molelcules
Total (without water)617,7569
Polymers617,7569
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: immunoprecipitation
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Antibody Fab 3D11 heavy chain


Mass: 49110.184 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Cricetulus griseus (Chinese hamster)
#2: Antibody Fab 3D11 light chain


Mass: 23055.285 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Cricetulus griseus (Chinese hamster)
#3: Protein Spike glycoprotein / S glycoprotein / E2 / Peplomer protein


Mass: 133753.250 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: Cricetulus griseus (Chinese hamster) / References: UniProt: P0DTC2
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

Component
IDNameTypeEntity IDParent-IDSource
1SARS-CoV-2 Spike protein trimer in complex with Fab 3D11COMPLEXall0MULTIPLE SOURCES
2SARS-CoV-2 Spike protein trimerCOMPLEX#31RECOMBINANT
3Fab 3D11COMPLEX#1-#21RECOMBINANT
Molecular weightValue: 0.4571 MDa / Experimental value: NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
12Severe acute respiratory syndrome coronavirus 22697049
23Homo sapiens (human)9606
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-IDStrainCell
12Cricetulus griseus (Chinese hamster)10029expiCHOOvary
23Cricetulus griseus (Chinese hamster)10029
Buffer solutionpH: 8
Buffer component
IDConc.NameFormulaBuffer-ID
110 mMHEPES1
2200 mMsodium chlorideNaCl1
SpecimenConc.: 0.4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 4 K / Details: 8-10 seconds, blot force 0

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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 / Nominal magnification: 105000 X / Nominal defocus max: 1500 nm / Nominal defocus min: 500 nm / Cs: 2.7 mm / C2 aperture diameter: 100 µm / Alignment procedure: ZEMLIN TABLEAU
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 5.9 sec. / Electron dose: 67.7 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 7536
Details: Movies were collected at super-resolution using correlated double sampling, with a frame time of 0.05 seconds and dose rate 8 e-/px/s
EM imaging opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV
Image scansSampling size: 5 µm / Width: 5760 / Height: 4092

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Processing

EM software
IDNameVersionCategory
2SerialEMimage acquisition
4cryoSPARC2.15.0CTF correction
7ISOLDE1model fitting
9ISOLDE1model refinement
10cryoSPARC2.15.0initial Euler assignment
11cryoSPARC2.15.0final Euler assignment
12cryoSPARC2.15.0classification
13cryoSPARC2.15.03D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 1890759
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 2.88 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 197150 / Algorithm: FOURIER SPACE / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL
Atomic model buildingPDB-ID: 7A94

7a94


Accession code: 7A94 / Source name: PDB / Type: experimental model
RefinementStereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 243.17 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.012135460
ELECTRON MICROSCOPYf_angle_d1.804748312
ELECTRON MICROSCOPYf_chiral_restr0.09815460
ELECTRON MICROSCOPYf_plane_restr0.01246246
ELECTRON MICROSCOPYf_dihedral_angle_d15.808712639

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