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- EMDB-33434: Cryo-EM structure of SARS-CoV-2 Omicron spike glycoprotein in com... -

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Basic information

Entry
Database: EMDB / ID: EMD-33434
TitleCryo-EM structure of SARS-CoV-2 Omicron spike glycoprotein in complex with three F61 Fab and three D2 Fab
Map data
Sample
  • Complex: SARS-CoV-2 Omicron spike in complex with F61 and D2 Fab
    • Protein or peptide: Spike glycoprotein
    • Protein or peptide: F61 heavy chain
    • Protein or peptide: F61 light chain
    • Protein or peptide: D2 heavy chain
    • Protein or peptide: D2 light chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
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 / Attachment and Entry / membrane fusion / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / receptor ligand activity / symbiont-mediated suppression of host innate immune response / host cell surface receptor binding / 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 / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Spike glycoprotein, N-terminal domain superfamily / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Spike glycoprotein, betacoronavirus / 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 ...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 N-terminal (NTD) domain profile. / Spike glycoprotein, N-terminal domain superfamily / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Spike glycoprotein, betacoronavirus / 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 2 (HR2) region profile. / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 1 (HR1) region profile. / Spike glycoprotein S2 superfamily, coronavirus / Spike glycoprotein S2, coronavirus / Coronavirus spike glycoprotein S2 / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal
Similarity search - Domain/homology
Biological speciesSevere acute respiratory syndrome coronavirus 2 / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.04 Å
AuthorsWang X / Li X
Funding support1 items
OrganizationGrant numberCountry
Not funded
CitationJournal: Cell Discov / Year: 2022
Title: Structural basis of a two-antibody cocktail exhibiting highly potent and broadly neutralizing activities against SARS-CoV-2 variants including diverse Omicron sublineages.
Authors: Xiaoman Li / Yongbing Pan / Qiangling Yin / Zejun Wang / Sisi Shan / Laixing Zhang / Jinfang Yu / Yuanyuan Qu / Lina Sun / Fang Gui / Jia Lu / Zhaofei Jing / Wei Wu / Tao Huang / Xuanling ...Authors: Xiaoman Li / Yongbing Pan / Qiangling Yin / Zejun Wang / Sisi Shan / Laixing Zhang / Jinfang Yu / Yuanyuan Qu / Lina Sun / Fang Gui / Jia Lu / Zhaofei Jing / Wei Wu / Tao Huang / Xuanling Shi / Jiandong Li / Xinguo Li / Dexin Li / Shiwen Wang / Maojun Yang / Linqi Zhang / Kai Duan / Mifang Liang / Xiaoming Yang / Xinquan Wang /
Abstract: The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern (VOCs), especially the latest Omicron, have exhibited severe antibody evasion. Broadly neutralizing antibodies ...The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern (VOCs), especially the latest Omicron, have exhibited severe antibody evasion. Broadly neutralizing antibodies with high potency against Omicron are urgently needed for understanding the working mechanisms and developing therapeutic agents. In this study, we characterized the previously reported F61, which was isolated from convalescent patients infected with prototype SARS-CoV-2, as a broadly neutralizing antibody against all VOCs including Omicron BA.1, BA.1.1, BA.2, BA.3 and BA.4 sublineages by utilizing antigen binding and cell infection assays. We also identified and characterized another broadly neutralizing antibody D2 with epitope distinct from that of F61. More importantly, we showed that a combination of F61 with D2 exhibited synergy in neutralization and protecting mice from SARS-CoV-2 Delta and Omicron BA.1 variants. Cryo-Electron Microscopy (Cryo-EM) structures of the spike-F61 and spike-D2 binary complexes revealed the distinct epitopes of F61 and D2 at atomic level and the structural basis for neutralization. Cryo-EM structure of the Omicron-spike-F61-D2 ternary complex provides further structural insights into the synergy between F61 and D2. These results collectively indicated F61 and F61-D2 cocktail as promising therapeutic antibodies for combating SARS-CoV-2 variants including diverse Omicron sublineages.
History
DepositionMay 15, 2022-
Header (metadata) releaseNov 23, 2022-
Map releaseNov 23, 2022-
UpdateNov 23, 2022-
Current statusNov 23, 2022Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_33434.png

Downloads & links

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Map

FileDownload / File: emd_33434.map.gz / Format: CCP4 / Size: 149.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 0.97 Å
Density
Contour LevelBy AUTHOR: 0.173
Minimum - Maximum-2.6463196 - 4.291442
Average (Standard dev.)-0.0003642551 (±0.0780751)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions340340340
Spacing340340340
CellA=B=C: 329.80002 Å
α=β=γ: 90.0 °

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Supplemental data

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Additional map: local map

Fileemd_33434_additional_1.map
Annotationlocal map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

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Histogram (log scale)

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Half map: #2

Fileemd_33434_half_map_1.map
Projections & Slices
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Histogram (log scale)

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Half map: #1

Fileemd_33434_half_map_2.map
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Sample components

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Entire : SARS-CoV-2 Omicron spike in complex with F61 and D2 Fab

EntireName: SARS-CoV-2 Omicron spike in complex with F61 and D2 Fab
Components
  • Complex: SARS-CoV-2 Omicron spike in complex with F61 and D2 Fab
    • Protein or peptide: Spike glycoprotein
    • Protein or peptide: F61 heavy chain
    • Protein or peptide: F61 light chain
    • Protein or peptide: D2 heavy chain
    • Protein or peptide: D2 light chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: SARS-CoV-2 Omicron spike in complex with F61 and D2 Fab

SupramoleculeName: SARS-CoV-2 Omicron spike in complex with F61 and D2 Fab
type: complex / Chimera: Yes / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Recombinant expressionOrganism: Homo sapiens (human)

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Macromolecule #1: Spike glycoprotein

MacromoleculeName: Spike glycoprotein / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Molecular weightTheoretical: 134.628844 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MFVFLVLLPL VSSQCVNLTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHVISG TNGTKRFDNP VLPFNDGVY FASIEKSNII RGWIFGTTLD SKTQSLLIVN NATNVVIKVC EFQFCNDPFL DHKNNKSWME SEFRVYSSAN N CTFEYVSQ ...String:
MFVFLVLLPL VSSQCVNLTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHVISG TNGTKRFDNP VLPFNDGVY FASIEKSNII RGWIFGTTLD SKTQSLLIVN NATNVVIKVC EFQFCNDPFL DHKNNKSWME SEFRVYSSAN N CTFEYVSQ PFLMDLEGKQ GNFKNLREFV FKNIDGYFKI YSKHTPIIVR EPEDLPQGFS ALEPLVDLPI GINITRFQTL LA LHRSYLT PGDSSSGWTA GAAAYYVGYL QPRTFLLKYN ENGTITDAVD CALDPLSETK CTLKSFTVEK GIYQTSNFRV QPT ESIVRF PNITNLCPFD EVFNATRFAS VYAWNRKRIS NCVADYSVLY NLAPFFTFKC YGVSPTKLND LCFTNVYADS FVIR GDEVR QIAPGQTGNI ADYNYKLPDD FTGCVIAWNS NKLDSKVSGN YNYLYRLFRK SNLKPFERDI STEIYQAGNK PCNGV AGFN CYFPLRSYSF RPTYGVGHQP YRVVVLSFEL LHAPATVCGP KKSTNLVKNK CVNFNFNGLK GTGVLTESNK KFLPFQ QFG RDIADTTDAV RDPQTLEILD ITPCSFGGVS VITPGTNTSN QVAVLYQGVN CTEVPVAIHA DQLTPTWRVY STGSNVF QT RAGCLIGAEY VNNSYECDIP IGAGICASYQ TQTKSHGSAS SVASQSIIAY TMSLGAENSV AYSNNSIAIP TNFTISVT T EILPVSMTKT SVDCTMYICG DSTECSNLLL QYGSFCTQLK RALTGIAVEQ DKNTQEVFAQ VKQIYKTPPI KYFGGFNFS QILPDPSKPS KRSPIEDLLF NKVTLADAGF IKQYGDCLGD IAARDLICAQ KFKGLTVLPP LLTDEMIAQY TSALLAGTIT SGWTFGAGP ALQIPFPMQM AYRFNGIGVT QNVLYENQKL IANQFNSAIG KIQDSLSSTP SALGKLQDVV NHNAQALNTL V KQLSSKFG AISSVLNDIF SRLDPPEAEV QIDRLITGRL QSLQTYVTQQ LIRAAEIRAS ANLAATKMSE CVLGQSKRVD FC GKGYHLM SFPQSAPHGV VFLHVTYVPA QEKNFTTAPA ICHDGKAHFP REGVFVSNGT HWFVTQRNFY EPQIITTDNT FVS GNCDVV IGIVNNTVYD PLQPELDSFK EELDKYFKNH TSPDVDLGDI SGINASVVNI QKEIDRLNEV AKNLNESLID LQEL GKYEQ YIKWP

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Macromolecule #2: F61 heavy chain

MacromoleculeName: F61 heavy chain / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 12.993491 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
EVQLVESGGG LVQPGGSLRL SCEASEIIVN RNYMNWVRQA PGKGLEWVSI IYPGGSTFYA DSVKGRFTIS RDNSKNTMYL QMNSLRAED TAVYYCARSY GDFYVDFWGQ GTLVTVSS

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Macromolecule #3: F61 light chain

MacromoleculeName: F61 light chain / type: protein_or_peptide / ID: 3 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 11.472622 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
QSVLTQPPSV SAAPGQKVTI SCSGSSSNIG NNYVSWYQQL PGTAPKLLIY DNNKRPSGIP DRFSGSKSGT SATLGITGLQ TGDEADYYC GTWDSSLSAW VFGGGTKLTV L

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Macromolecule #4: D2 heavy chain

MacromoleculeName: D2 heavy chain / type: protein_or_peptide / ID: 4 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 13.406785 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
EVQLVESGGG LVQPGRSLTL SCGASGFTFE DYAMHWVRQA PGKGLEWVSG IDWNSGVIGY ADSVKGRFII SRDNAKNSLY LHMRSLTAE DTALYYCAKD VYSESGSGSY YDYWGQGTLV TVSS

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Macromolecule #5: D2 light chain

MacromoleculeName: D2 light chain / type: protein_or_peptide / ID: 5 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 11.468719 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
QSVLTQPPSV SAAPGQKVAI SCSGSTSNIG DNFVSWYQQF PGTAPKLLLY DDARRPSGIP DRFSGSKSGT SATLGITGLQ TGDEAVYFC STWDNSLNVV LFGGGTKLTV L

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Macromolecule #6: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 6 / Number of copies: 31 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

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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

Concentration0.91 mg/mL
BufferpH: 7.2
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.5 µm / Nominal defocus min: 1.2 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

7wpf

Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.04 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 670525
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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