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- EMDB-32562: SARS-CoV-2 Omicron spike protein SD1 in complex with S3H3 Fab -

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Basic information

Entry
Database: EMDB / ID: EMD-32562
TitleSARS-CoV-2 Omicron spike protein SD1 in complex with S3H3 Fab
Map data
Sample
  • Complex: SARS-CoV-2 Omicron spike in complex with S3H3 Fab
    • Protein or peptide: Heavy chain of S3H3 Fab
    • Protein or peptide: Light chain of S3H3 Fab
    • Protein or peptide: Spike glycoprotein
KeywordsSARS-CoV-2 / coronavirus / Omicron variant / B.1.1.529 lineage / spike protein / VIRAL PROTEIN
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 speciesSevere acute respiratory syndrome coronavirus 2 / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.61 Å
AuthorsHong Q / Cong Y
Funding support China, 1 items
OrganizationGrant numberCountry
Chinese Academy of Sciences China
CitationJournal: Nature / Year: 2022
Title: Molecular basis of receptor binding and antibody neutralization of Omicron.
Authors: Qin Hong / Wenyu Han / Jiawei Li / Shiqi Xu / Yifan Wang / Cong Xu / Zuyang Li / Yanxing Wang / Chao Zhang / Zhong Huang / Yao Cong /
Abstract: The SARS-CoV-2 Omicron variant exhibits striking immune evasion and is spreading rapidly worldwide. Understanding the structural basis of the high transmissibility and enhanced immune evasion of ...The SARS-CoV-2 Omicron variant exhibits striking immune evasion and is spreading rapidly worldwide. Understanding the structural basis of the high transmissibility and enhanced immune evasion of Omicron is of high importance. Here, using cryo-electron microscopy, we present both the closed and the open states of the Omicron spike (S) protein, which appear more compact than the counterparts of the G614 strain, potentially related to enhanced inter-protomer and S1-S2 interactions induced by Omicron residue substitution. The closed state showing dominant population may indicate a conformational masking mechanism for the immune evasion of Omicron. Moreover, we captured three states for the Omicron S-ACE2 complex, revealing that the substitutions on the Omicron RBM result in new salt bridges and hydrogen bonds, more favourable electrostatic surface properties, and an overall strengthened S-ACE2 interaction, in line with the observed higher ACE2 affinity of Omicron S than of G614. Furthermore, we determined the structures of Omicron S in complex with the Fab of S3H3, an antibody that is able to cross-neutralize major variants of concern including Omicron, elucidating the structural basis for S3H3-mediated broad-spectrum neutralization. Our findings shed light on the receptor engagement and antibody neutralization or evasion of Omicron and may also inform the design of broadly effective vaccines against SARS-CoV-2.
History
DepositionJan 8, 2022-
Header (metadata) releaseJan 26, 2022-
Map releaseJan 26, 2022-
UpdateOct 9, 2024-
Current statusOct 9, 2024Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.07
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by cylindrical radius
  • Surface level: 0.07
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7wk8
  • Surface level: 0.07
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_32562.png

Downloads & links

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Map

FileDownload / File: emd_32562.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.09 Å/pix.
x 360 pix.
= 393.48 Å		1.09 Å/pix.
x 360 pix.
= 393.48 Å		1.09 Å/pix.
x 360 pix.
= 393.48 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.093 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.07 / Movie #1: 0.07
Minimum - Maximum-0.0017230108 - 2.0770316
Average (Standard dev.)0.00017553453 (±0.011028322)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions360360360
Spacing360360360
CellA=B=C: 393.48 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0931.0931.093
M x/y/z360360360
origin x/y/z0.0000.0000.000
length x/y/z393.480393.480393.480
α/β/γ90.00090.00090.000
start NX/NY/NZ535455
NX/NY/NZ134138134
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS360360360
D min/max/mean-0.0022.0770.000

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Supplemental data

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Mask #1

Fileemd_32562_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Additional map: SD1 S3H3 P15 J253 002 volume map

Fileemd_32562_additional_1.map
AnnotationSD1_S3H3_P15_J253_002_volume_map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : SARS-CoV-2 Omicron spike in complex with S3H3 Fab

EntireName: SARS-CoV-2 Omicron spike in complex with S3H3 Fab
Components
  • Complex: SARS-CoV-2 Omicron spike in complex with S3H3 Fab
    • Protein or peptide: Heavy chain of S3H3 Fab
    • Protein or peptide: Light chain of S3H3 Fab
    • Protein or peptide: Spike glycoprotein

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Supramolecule #1: SARS-CoV-2 Omicron spike in complex with S3H3 Fab

SupramoleculeName: SARS-CoV-2 Omicron spike in complex with S3H3 Fab / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2

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Macromolecule #1: Heavy chain of S3H3 Fab

MacromoleculeName: Heavy chain of S3H3 Fab / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 23.619521 KDa
Recombinant expressionOrganism: Mus musculus (house mouse)
SequenceString: QVQLQQPGAE LVRPGASVKL SCKASGYSFT RFWMNWVKQR PGQGLEWIGM IHPSDSETRL NQKFKDKATL TVDKSSTTAY MQLSSPTSE DSAVYYCARK DYDYDAWFAY WGQGTLVTVS AAKTTPPSVY PLAPGSAAQT NSMVTLGCLV KGYFPEPVTV T WNSGSLSS ...String:
QVQLQQPGAE LVRPGASVKL SCKASGYSFT RFWMNWVKQR PGQGLEWIGM IHPSDSETRL NQKFKDKATL TVDKSSTTAY MQLSSPTSE DSAVYYCARK DYDYDAWFAY WGQGTLVTVS AAKTTPPSVY PLAPGSAAQT NSMVTLGCLV KGYFPEPVTV T WNSGSLSS GVHTFPAVLQ SDLYTLSSSV TVPSSTWPSE TVTCNVAHPA SSTKVDKKI

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Macromolecule #2: Light chain of S3H3 Fab

MacromoleculeName: Light chain of S3H3 Fab / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 23.5401 KDa
Recombinant expressionOrganism: Mus musculus (house mouse)
SequenceString: DIVLTQSPAS LAVSLGQRAT ISCRASKSVS ASVYSYMHWY QQKPGQPPKL LIYLASSLES GVPARFSGSG SGTDFTLNIH PVEEEDAAT YYCHHSRELP PAFGGGTKLE IKRADAAPTV SIFPPSSEQL TSGGASVVCF LNNFYPKDIN VKWKIDGSER Q NGVLNSWT ...String:
DIVLTQSPAS LAVSLGQRAT ISCRASKSVS ASVYSYMHWY QQKPGQPPKL LIYLASSLES GVPARFSGSG SGTDFTLNIH PVEEEDAAT YYCHHSRELP PAFGGGTKLE IKRADAAPTV SIFPPSSEQL TSGGASVVCF LNNFYPKDIN VKWKIDGSER Q NGVLNSWT DQDSKDSTYS MSSTLTLTKD EYERHNSYTC EATHKTSTSP IVKSFNR

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Macromolecule #3: Spike glycoprotein

MacromoleculeName: Spike glycoprotein / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Molecular weightTheoretical: 140.214625 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 KRSFIEDLLF NKVTLADAGF IKQYGDCLGD IAARDLICAQ KFKGLTVLPP LLTDEMIAQY TSALLAGTIT SGWTFGAGA ALQIPFAMQM AYRFNGIGVT QNVLYENQKL IANQFNSAIG KIQDSLSSTA 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 GSGYIPEAPR DGQAYVRKDG EWVLLSTFLE NLYFQGDYKD DDDKHHHHHH HHH

UniProtKB: Spike glycoprotein

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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

BufferpH: 7.5
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: 2.5 µm / Nominal defocus min: 0.8 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: EMDB MAP
EMDB ID:

32434

Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.61 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 101192
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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