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- EMDB-34940: Cryo-EM structure of SARS-CoV-2 Omicron BA.4 S-trimer in complex ... -

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Entry
Database: EMDB / ID: EMD-34940
TitleCryo-EM structure of SARS-CoV-2 Omicron BA.4 S-trimer in complex with fab L4.65 and L5.34
Map dataCryo-EM structure of SARS-CoV-2 Omicron BA.4 S-trimer in complex with fab L4.65 and L5.34
Sample
  • Complex: Cryo-EM structure of SARS-CoV-2 Omicron BA.4 S-trimer in complex with fab L4.65 and L5.34
    • Protein or peptide: Spike protein S2'
    • Protein or peptide: fab L4.65
    • Protein or peptide: fab L4.65
    • Protein or peptide: fab L5.34
    • Protein or peptide: fab L5.34
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
KeywordsSARS-CoV-2 / Omicron BA.4 S-trimer / Cryo-EM structure / fab / IMMUNE SYSTEM/VIRAL PROTEIN / IMMUNE SYSTEM-VIRAL PROTEIN 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 / host cell endoplasmic reticulum-Golgi intermediate compartment membrane ...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 / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / entry receptor-mediated virion attachment to host cell / 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 / host cell surface receptor binding / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / virion attachment to host cell / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell plasma membrane / virion membrane / membrane / identical protein binding / 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: 2.85 Å
AuthorsGao GF / Liu S
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)81991494 China
CitationJournal: Cell Discov / Year: 2023
Title: Dosing interval regimen shapes potency and breadth of antibody repertoire after vaccination of SARS-CoV-2 RBD protein subunit vaccine.
Authors: Shuxin Guo / Yuxuan Zheng / Zhengrong Gao / Minrun Duan / Sheng Liu / Pan Du / XiaoYu Xu / Kun Xu / Xin Zhao / Yan Chai / Peiyi Wang / Qi Zhao / George F Gao / Lianpan Dai /
Abstract: Vaccination with different vaccines has been implemented globally to counter the continuous COVID-19 pandemic. However, the vaccine-elicited antibodies have reduced efficiency against the highly ...Vaccination with different vaccines has been implemented globally to counter the continuous COVID-19 pandemic. However, the vaccine-elicited antibodies have reduced efficiency against the highly mutated Omicron sub-variants. Previously, we developed a protein subunit COVID-19 vaccine called ZF2001, based on the dimeric receptor-binding domain (RBD). This vaccine has been administered using different dosing intervals in real-world setting. Some individuals received three doses of ZF2001, with a one-month interval between each dose, due to urgent clinical requirements. Others had an extended dosing interval of up to five months between the second and third dose, a standard vaccination regimen for the protein subunit vaccine against hepatitis B. In this study, we profile B cell responses in individuals who received three doses of ZF2001, and compared those with long or short dosing intervals. We observed that the long-interval group exhibited higher and broader serologic antibody responses. These responses were associated with the increased size and evolution of vaccine-elicited B-cell receptor repertoires, characterized by the elevation of expanded clonotypes and somatic hypermutations. Both groups of individuals generated substantial amounts of broadly neutralizing antibodies (bnAbs) against various SARS-CoV-2 variants, including Omicron sub-variants such as XBB. These bnAbs target four antigenic sites within the RBD. To determine the vulnerable site of SARS-CoV-2, we employed cryo-electron microscopy to identify the epitopes of highly potent bnAbs that targeted two major sites. Our findings provide immunological insights into the B cell responses elicited by RBD-based vaccine, and suggest that a vaccination regimen of prolonging time interval should be used in practice.
History
DepositionDec 12, 2022-
Header (metadata) releaseJan 31, 2024-
Map releaseJan 31, 2024-
UpdateJan 31, 2024-
Current statusJan 31, 2024Processing site: PDBc / Status: Released

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Structure visualization

Supplemental images

emd_34940.png

Downloads & links

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Map

FileDownload / File: emd_34940.map.gz / Format: CCP4 / Size: 512 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationCryo-EM structure of SARS-CoV-2 Omicron BA.4 S-trimer in complex with fab L4.65 and L5.34
Voxel sizeX=Y=Z: 0.84 Å
Density
Contour LevelBy AUTHOR: 0.4
Minimum - Maximum-5.0449905 - 8.549620000000001
Average (Standard dev.)0.00031110307 (±0.11139703)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions512512512
Spacing512512512
CellA=B=C: 430.08 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: Cryo-EM structure of SARS-CoV-2 Omicron BA.4 S-trimer in...

Fileemd_34940_half_map_1.map
AnnotationCryo-EM structure of SARS-CoV-2 Omicron BA.4 S-trimer in complex with fab L4.65 and L5.34
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Cryo-EM structure of SARS-CoV-2 Omicron BA.4 S-trimer in...

Fileemd_34940_half_map_2.map
AnnotationCryo-EM structure of SARS-CoV-2 Omicron BA.4 S-trimer in complex with fab L4.65 and L5.34
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Cryo-EM structure of SARS-CoV-2 Omicron BA.4 S-trimer in complex ...

EntireName: Cryo-EM structure of SARS-CoV-2 Omicron BA.4 S-trimer in complex with fab L4.65 and L5.34
Components
  • Complex: Cryo-EM structure of SARS-CoV-2 Omicron BA.4 S-trimer in complex with fab L4.65 and L5.34
    • Protein or peptide: Spike protein S2'
    • Protein or peptide: fab L4.65
    • Protein or peptide: fab L4.65
    • Protein or peptide: fab L5.34
    • Protein or peptide: fab L5.34
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: Cryo-EM structure of SARS-CoV-2 Omicron BA.4 S-trimer in complex ...

SupramoleculeName: Cryo-EM structure of SARS-CoV-2 Omicron BA.4 S-trimer in complex with fab L4.65 and L5.34
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2

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Macromolecule #1: Spike protein S2'

MacromoleculeName: Spike protein S2' / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2 / Strain: Omicron/BA.4
Molecular weightTheoretical: 125.33618 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: QCVNLITRTQ SYTNSFTRGV YYPDKVFRSS VLHSTQDLFL PFFSNVTWFH AISGTNGTKR FDNPVLPFND GVYFASTEKS NIIRGWIFG TTLDSKTQSL LIVNNATNVV IKVCEFQFCN DPFLDVYYHK NNKSWMESEF RVYSSANNCT FEYVSQPFLM D LEGKQGNF ...String:
QCVNLITRTQ SYTNSFTRGV YYPDKVFRSS VLHSTQDLFL PFFSNVTWFH AISGTNGTKR FDNPVLPFND GVYFASTEKS NIIRGWIFG TTLDSKTQSL LIVNNATNVV IKVCEFQFCN DPFLDVYYHK NNKSWMESEF RVYSSANNCT FEYVSQPFLM D LEGKQGNF KNLREFVFKN IDGYFKIYSK HTPINLVRDL PQGFSALEPL VDLPIGINIT RFQTLLALHR SYLTPGDSSS GW TAGAAAY YVGYLQPRTF LLKYNENGTI TDAVDCALDP LSETKCTLKS FTVEKGIYQT SNFRVQPTES IVRFPNITNL CPF DEVFNA TRFASVYAWN RKRISNCVAD YSVLYNFAPF FAFKCYGVSP TKLNDLCFTN VYADSFVIRG NEVSQIAPGQ TGNI ADYNY KLPDDFTGCV IAWNSNKLDS KVGGNYNYRY RLFRKSNLKP FERDISTEIY QAGNKPCNGV AGVNCYFPLQ SYGFR PTYG VGHQPYRVVV LSFELLHAPA TVCGPKKSTN LVKNKCVNFN FNGLTGTGVL TESNKKFLPF QQFGRDIADT TDAVRD PQT LEILDITPCS FGGVSVITPG TNTSNQVAVL YQGVNCTEVP VAIHADQLTP TWRVYSTGSN VFQTRAGCLI GAEYVNN SY ECDIPIGAGI CASYQTQTNS PRRARSVASQ SIIAYTMSLG AENSVAYSNN SIAIPTNFTI SVTTEILPVS MTKTSVDC T MYICGDSTEC SNLLLQYGSF CTQLKRALTG IAVEQDKNTQ EVFAQVKQIY KTPPIKYFGG FNFSQILPDP SKPSKRSPI EDLLFNKVTL ADAGFIKQYG DCLGDIAARD LICAQKFNGL TVLPPLLTDE MIAQYTSALL AGTITSGWTF GAGPALQIPF PMQMAYRFN GIGVTQNVLY ENQKLIANQF NSAIGKIQDS LSSTPSALGK LQDVVNHNAQ ALNTLVKQLS SKFGAISSVL N DILSRLDP PEAEVQIDRL ITGRLQSLQT YVTQQLIRAA EIRASANLAA TKMSECVLGQ SKRVDFCGKG YHLMSFPQSA PH GVVFLHV TYVPAQEKNF TTAPAICHDG KAHFPREGVF VSNGTHWFVT QRNFYEPQII TTDNTFVSGN CDVVIGIVNN TVY DPLQPE LDS

UniProtKB: Spike glycoprotein

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Macromolecule #2: fab L4.65

MacromoleculeName: fab L4.65 / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 24.953938 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: QITLKESGPT LVKPTQTLTL TCTFSGFSLS TSGVGVAWIR QPPGKALEWL ALIYWDNDKR SSPSLNNRLT ITKDTSKNQV VLTMTNMDP EDTATYYCAH FFSHYDSSNY YYGSWFDPWG QGTLVTVSSA STKGPSVFPL APSSKSTSGG TAALGCLVKD Y FPEPVTVS ...String:
QITLKESGPT LVKPTQTLTL TCTFSGFSLS TSGVGVAWIR QPPGKALEWL ALIYWDNDKR SSPSLNNRLT ITKDTSKNQV VLTMTNMDP EDTATYYCAH FFSHYDSSNY YYGSWFDPWG QGTLVTVSSA STKGPSVFPL APSSKSTSGG TAALGCLVKD Y FPEPVTVS WNSGALTSGV HTFPAVLQSS GLYSLSSVVT VPSSSLGTQT YICNVNHKPS NTKVDKRVEP KSC

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Macromolecule #3: fab L4.65

MacromoleculeName: fab L4.65 / type: protein_or_peptide / ID: 3 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.556061 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: EIVLTQSPGT LSLSPGERAT LSCRASQSFD SRYLGWYQQK SGQAPRLLIY GASSRATGIP DRFSGSGSGT DFTLTISRLE PEDFAVYYC QQFGDSPFTF GQGTKLEIKR TVAAPSVFIF PPSDEQLKSG TASVVCLLNN FYPREAKVQW KVDNALQSGN S QESVTEQD ...String:
EIVLTQSPGT LSLSPGERAT LSCRASQSFD SRYLGWYQQK SGQAPRLLIY GASSRATGIP DRFSGSGSGT DFTLTISRLE PEDFAVYYC QQFGDSPFTF GQGTKLEIKR TVAAPSVFIF PPSDEQLKSG TASVVCLLNN FYPREAKVQW KVDNALQSGN S QESVTEQD SKDSTYSLSS TLTLSKADYE KHKVYACEVT HQGLSSPVTK SFNRGEC

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Macromolecule #4: fab L5.34

MacromoleculeName: fab L5.34 / type: protein_or_peptide / ID: 4 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.592424 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: VQLVESGGGL VQPGGSLRLS CAASEITVSS NYMNWVRQAP GKGLEWVSVV YPGGSTFYTD SVKGRFTISR DNSKNTLYLQ MNSLRAEDT AVYYCARESG GFPLAEGAFD IWGQGTMVTV SSASTKGPSV FPLAPSSKST SGGTAALGCL VKDYFPEPVT V SWNSGALT ...String:
VQLVESGGGL VQPGGSLRLS CAASEITVSS NYMNWVRQAP GKGLEWVSVV YPGGSTFYTD SVKGRFTISR DNSKNTLYLQ MNSLRAEDT AVYYCARESG GFPLAEGAFD IWGQGTMVTV SSASTKGPSV FPLAPSSKST SGGTAALGCL VKDYFPEPVT V SWNSGALT SGVHTFPAVL QSSGLYSLSS VVTVPSSSLG TQTYICNVNH KPSNTKVDKR VEPKSC

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Macromolecule #5: fab L5.34

MacromoleculeName: fab L5.34 / type: protein_or_peptide / ID: 5 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.379928 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: DIQMTQSPSS LSASVGDRVS ITCRASQSIS THLHWYQQKP GKAPKLLISA ASTLQSGVPS RFSGSGSGTD FTLTITSLQP EDFATYYCQ QSYSTPRGLS FGGGTKVEIK RTVAAPSVFI FPPSDEQLKS GTASVVCLLN NFYPREAKVQ WKVDNALQSG N SQESVTEQ ...String:
DIQMTQSPSS LSASVGDRVS ITCRASQSIS THLHWYQQKP GKAPKLLISA ASTLQSGVPS RFSGSGSGTD FTLTITSLQP EDFATYYCQ QSYSTPRGLS FGGGTKVEIK RTVAAPSVFI FPPSDEQLKS GTASVVCLLN NFYPREAKVQ WKVDNALQSG N SQESVTEQ DSKDSTYSLS STLTLSKADY EKHKVYACEV THQGLSSPVT KSFNRGEC

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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: 3 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose / N-Acetylglucosamine

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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: 8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 5.0 µm / Nominal defocus min: 1.2 µm
Image recordingFilm or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 1.39 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE
Initial angle assignmentType: OTHER
Final angle assignmentType: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.85 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 593563

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