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- EMDB-22137: Complex of SARS-CoV-2 receptor binding domain with the Fab fragme... -

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Basic information

Entry
Database: EMDB / ID: EMD-22137
TitleComplex of SARS-CoV-2 receptor binding domain with the Fab fragments of two neutralizing antibodies
Map data
Sample
  • Complex: Complex of SARS-CoV-2 spike protein receptor binding domain with Fab fragments of two neutralizing antibodies
    • Complex: spike protein receptor binding domain
      • Protein or peptide: Spike protein S1
    • Complex: REGN10933 antibody Fab fragment
      • Protein or peptide: REGN10933 antibody Fab fragment light chain
      • Protein or peptide: REGN10933 antibody Fab fragment heavy chain
    • Complex: REGN10987 antibody Fab fragment
      • Protein or peptide: REGN10987 antibody Fab fragment heavy chain
      • Protein or peptide: REGN10987 antibody Fab fragment light chain
KeywordsSARS-CoV-2 / therapeutic antibody / antiviral / 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 / 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 ...Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / 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 / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / membrane fusion / Attachment and Entry / 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 / endocytosis involved in viral entry into host cell / receptor ligand activity / 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 / Betacoronavirus spike glycoprotein S1, receptor binding / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Betacoronavirus-like spike glycoprotein S1, N-terminal / 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 speciesSevere acute respiratory syndrome coronavirus 2 / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.9 Å
AuthorsFranklin MC / Saotome K
Funding support1 items
OrganizationGrant numberCountry
Biomedical Advanced Research and Development Authority (BARDA)HHSO100201700020C
CitationJournal: Science / Year: 2020
Title: Studies in humanized mice and convalescent humans yield a SARS-CoV-2 antibody cocktail.
Authors: Johanna Hansen / Alina Baum / Kristen E Pascal / Vincenzo Russo / Stephanie Giordano / Elzbieta Wloga / Benjamin O Fulton / Ying Yan / Katrina Koon / Krunal Patel / Kyung Min Chung / Aynur ...Authors: Johanna Hansen / Alina Baum / Kristen E Pascal / Vincenzo Russo / Stephanie Giordano / Elzbieta Wloga / Benjamin O Fulton / Ying Yan / Katrina Koon / Krunal Patel / Kyung Min Chung / Aynur Hermann / Erica Ullman / Jonathan Cruz / Ashique Rafique / Tammy Huang / Jeanette Fairhurst / Christen Libertiny / Marine Malbec / Wen-Yi Lee / Richard Welsh / Glen Farr / Seth Pennington / Dipali Deshpande / Jemmie Cheng / Anke Watty / Pascal Bouffard / Robert Babb / Natasha Levenkova / Calvin Chen / Bojie Zhang / Annabel Romero Hernandez / Kei Saotome / Yi Zhou / Matthew Franklin / Sumathi Sivapalasingam / David Chien Lye / Stuart Weston / James Logue / Robert Haupt / Matthew Frieman / Gang Chen / William Olson / Andrew J Murphy / Neil Stahl / George D Yancopoulos / Christos A Kyratsous /
Abstract: Neutralizing antibodies have become an important tool in treating infectious diseases. Recently, two separate approaches yielded successful antibody treatments for Ebola-one from genetically ...Neutralizing antibodies have become an important tool in treating infectious diseases. Recently, two separate approaches yielded successful antibody treatments for Ebola-one from genetically humanized mice and the other from a human survivor. Here, we describe parallel efforts using both humanized mice and convalescent patients to generate antibodies against the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike protein, which yielded a large collection of fully human antibodies that were characterized for binding, neutralization, and three-dimensional structure. On the basis of these criteria, we selected pairs of highly potent individual antibodies that simultaneously bind the receptor binding domain of the spike protein, thereby providing ideal partners for a therapeutic antibody cocktail that aims to decrease the potential for virus escape mutants that might arise in response to selective pressure from a single-antibody treatment.
History
DepositionJun 10, 2020-
Header (metadata) releaseJun 24, 2020-
Map releaseJun 24, 2020-
UpdateNov 13, 2024-
Current statusNov 13, 2024Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.1
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 0.1
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6xdg
  • Surface level: 0.1
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_22137.png

Downloads & links

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Map

FileDownload / File: emd_22137.map.gz / Format: CCP4 / Size: 83.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.85 Å/pix.
x 280 pix.
= 238. Å		0.85 Å/pix.
x 280 pix.
= 238. Å		0.85 Å/pix.
x 280 pix.
= 238. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.85 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.1 / Movie #1: 0.1
Minimum - Maximum-0.22156094 - 0.46713254
Average (Standard dev.)0.0002829932 (±0.013483254)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions280280280
Spacing280280280
CellA=B=C: 238.0 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.850.850.85
M x/y/z280280280
origin x/y/z0.0000.0000.000
length x/y/z238.000238.000238.000
α/β/γ90.00090.00090.000
start NX/NY/NZ434333
NX/NY/NZ116118137
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS280280280
D min/max/mean-0.2220.4670.000

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Supplemental data

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Sample components

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Entire : Complex of SARS-CoV-2 spike protein receptor binding domain with ...

EntireName: Complex of SARS-CoV-2 spike protein receptor binding domain with Fab fragments of two neutralizing antibodies
Components
  • Complex: Complex of SARS-CoV-2 spike protein receptor binding domain with Fab fragments of two neutralizing antibodies
    • Complex: spike protein receptor binding domain
      • Protein or peptide: Spike protein S1
    • Complex: REGN10933 antibody Fab fragment
      • Protein or peptide: REGN10933 antibody Fab fragment light chain
      • Protein or peptide: REGN10933 antibody Fab fragment heavy chain
    • Complex: REGN10987 antibody Fab fragment
      • Protein or peptide: REGN10987 antibody Fab fragment heavy chain
      • Protein or peptide: REGN10987 antibody Fab fragment light chain

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Supramolecule #1: Complex of SARS-CoV-2 spike protein receptor binding domain with ...

SupramoleculeName: Complex of SARS-CoV-2 spike protein receptor binding domain with Fab fragments of two neutralizing antibodies
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all

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Supramolecule #2: spike protein receptor binding domain

SupramoleculeName: spike protein receptor binding domain / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2

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Supramolecule #3: REGN10933 antibody Fab fragment

SupramoleculeName: REGN10933 antibody Fab fragment / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2-#3
Source (natural)Organism: Homo sapiens (human)

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Supramolecule #4: REGN10987 antibody Fab fragment

SupramoleculeName: REGN10987 antibody Fab fragment / type: complex / ID: 4 / Parent: 1 / Macromolecule list: #4-#5
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Spike protein S1

MacromoleculeName: Spike protein S1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Molecular weightTheoretical: 28.437902 KDa
Recombinant expressionOrganism: Cricetulus griseus (Chinese hamster)
SequenceString: RVQPTESIVR FPNITNLCPF GEVFNATRFA SVYAWNRKRI SNCVADYSVL YNSASFSTFK CYGVSPTKLN DLCFTNVYAD SFVIRGDEV RQIAPGQTGK IADYNYKLPD DFTGCVIAWN SNNLDSKVGG NYNYLYRLFR KSNLKPFERD ISTEIYQAGS T PCNGVEGF ...String:
RVQPTESIVR FPNITNLCPF GEVFNATRFA SVYAWNRKRI SNCVADYSVL YNSASFSTFK CYGVSPTKLN DLCFTNVYAD SFVIRGDEV RQIAPGQTGK IADYNYKLPD DFTGCVIAWN SNNLDSKVGG NYNYLYRLFR KSNLKPFERD ISTEIYQAGS T PCNGVEGF NCYFPLQSYG FQPTNGVGYQ PYRVVVLSFE LLHAPATVCG PKKSTNLVKN KCVNFEQKLI SEEDLGGEQK LI SEEDLHH HHHH

UniProtKB: Spike glycoprotein

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Macromolecule #2: REGN10933 antibody Fab fragment light chain

MacromoleculeName: REGN10933 antibody Fab fragment light chain / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.34783 KDa
Recombinant expressionOrganism: Cricetulus griseus (Chinese hamster)
SequenceString: DIQMTQSPSS LSASVGDRVT ITCQASQDIT NYLNWYQQKP GKAPKLLIYA ASNLETGVPS RFSGSGSGTD FTFTISGLQP EDIATYYCQ QYDNLPLTFG GGTKVEIKRT VAAPSVFIFP PSDEQLKSGT ASVVCLLNNF YPREAKVQWK VDNALQSGNS Q ESVTEQDS ...String:
DIQMTQSPSS LSASVGDRVT ITCQASQDIT NYLNWYQQKP GKAPKLLIYA ASNLETGVPS RFSGSGSGTD FTFTISGLQP EDIATYYCQ QYDNLPLTFG GGTKVEIKRT VAAPSVFIFP PSDEQLKSGT ASVVCLLNNF YPREAKVQWK VDNALQSGNS Q ESVTEQDS KDSTYSLSST LTLSKADYEK HKVYACEVTH QGLSSPVTKS FNRGEC

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Macromolecule #3: REGN10933 antibody Fab fragment heavy chain

MacromoleculeName: REGN10933 antibody Fab fragment heavy chain / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 24.142105 KDa
Recombinant expressionOrganism: Cricetulus griseus (Chinese hamster)
SequenceString: QVQLVESGGG LVKPGGSLRL SCAASGFTFS DYYMSWIRQA PGKGLEWVSY ITYSGSTIYY ADSVKGRFTI SRDNAKSSLY LQMNSLRAE DTAVYYCARD RGTTMVPFDY WGQGTLVTVS SASTKGPSVF PLAPSSKSTS GGTAALGCLV KDYFPEPVTV S WNSGALTS ...String:
QVQLVESGGG LVKPGGSLRL SCAASGFTFS DYYMSWIRQA PGKGLEWVSY ITYSGSTIYY ADSVKGRFTI SRDNAKSSLY LQMNSLRAE DTAVYYCARD RGTTMVPFDY WGQGTLVTVS SASTKGPSVF PLAPSSKSTS GGTAALGCLV KDYFPEPVTV S WNSGALTS GVHTFPAVLQ SSGLYSLSSV VTVPSSSLGT QTYICNVNHK PSNTKVDKKV EPKSCDKT

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Macromolecule #4: REGN10987 antibody Fab fragment heavy chain

MacromoleculeName: REGN10987 antibody Fab fragment heavy chain / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 24.036887 KDa
Recombinant expressionOrganism: Cricetulus griseus (Chinese hamster)
SequenceString: QVQLVESGGG VVQPGRSLRL SCAASGFTFS NYAMYWVRQA PGKGLEWVAV ISYDGSNKYY ADSVKGRFTI SRDNSKNTLY LQMNSLRTE DTAVYYCASG SDYGDYLLVY WGQGTLVTVS SASTKGPSVF PLAPSSKSTS GGTAALGCLV KDYFPEPVTV S WNSGALTS ...String:
QVQLVESGGG VVQPGRSLRL SCAASGFTFS NYAMYWVRQA PGKGLEWVAV ISYDGSNKYY ADSVKGRFTI SRDNSKNTLY LQMNSLRTE DTAVYYCASG SDYGDYLLVY WGQGTLVTVS SASTKGPSVF PLAPSSKSTS GGTAALGCLV KDYFPEPVTV S WNSGALTS GVHTFPAVLQ SSGLYSLSSV VTVPSSSLGT QTYICNVNHK PSNTKVDKKV EPKSCDK

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Macromolecule #5: REGN10987 antibody Fab fragment light chain

MacromoleculeName: REGN10987 antibody Fab fragment light chain / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 22.804154 KDa
Recombinant expressionOrganism: Cricetulus griseus (Chinese hamster)
SequenceString: QSALTQPASV SGSPGQSITI SCTGTSSDVG GYNYVSWYQQ HPGKAPKLMI YDVSKRPSGV SNRFSGSKSG NTASLTISGL QSEDEADYY CNSLTSISTW VFGGGTKLTV LGQPKAAPSV TLFPPSSEEL QANKATLVCL ISDFYPGAVT VAWKADSSPV K AGVETTTP ...String:
QSALTQPASV SGSPGQSITI SCTGTSSDVG GYNYVSWYQQ HPGKAPKLMI YDVSKRPSGV SNRFSGSKSG NTASLTISGL QSEDEADYY CNSLTSISTW VFGGGTKLTV LGQPKAAPSV TLFPPSSEEL QANKATLVCL ISDFYPGAVT VAWKADSSPV K AGVETTTP SKQSNNKYAA SSYLSLTPEQ WKSHRSYSCQ VTHEGSTVEK TVAPTECS

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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

Concentration1.5 mg/mL
BufferpH: 7.4
GridModel: UltrAuFoil R1.2/1.3 / Material: GOLD / Pretreatment - Type: PLASMA CLEANING / Pretreatment - Time: 15 sec. / Pretreatment - Atmosphere: OTHER
VitrificationCryogen name: ETHANE / Instrument: FEI VITROBOT MARK IV
Details0.15% PMAL-C8 added to help with particle distribution

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Specialist opticsEnergy filter - Name: GIF Bioquantum
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number grids imaged: 1 / Number real images: 2821 / Average electron dose: 40.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal magnification: 105000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 989553
Details: Template picking in cryoSPARC, with templates generated from a previous blob picking step
Startup modelType of model: OTHER
Details: Ab initio model generated from the data using CryoSPARC
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 48140
Initial angle assignmentType: RANDOM ASSIGNMENT
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC
Final 3D classificationNumber classes: 3

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Atomic model buiding 1

RefinementSpace: REAL / Protocol: OTHER
Output model

PDB-6xdg:
Complex of SARS-CoV-2 receptor binding domain with the Fab fragments of two neutralizing antibodies

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