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- EMDB-33347: Cryo-EM structure of S glycoprotein encoded by the Covid-19 mRNA ... -

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Basic information

Entry
Database: EMDB / ID: EMD-33347
TitleCryo-EM structure of S glycoprotein encoded by the Covid-19 mRNA vaccine candidate RQ3013 (Postfusion state)
Map data
Sample
  • Complex: Severe acute respiratory syndrome coronavirusSARS-CoV-1
    • Protein or peptide: Spike glycoprotein,peptide
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
  • Ligand: alpha-D-mannopyranose
KeywordsSpike / mRNA vaccine / SARS-CoV-2 / S clycoprotein / 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 / 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 / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.5 Å
AuthorsWu Z / Yu Z / Tan S / Lu J / Lu G / Lin J
Funding support China, 3 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32130063 China
National Natural Science Foundation of China (NSFC)31770784 China
Not funded2017YFA0504602
CitationJournal: Sci Bull (Beijing) / Year: 2023
Title: Preclinical evaluation of RQ3013, a broad-spectrum mRNA vaccine against SARS-CoV-2 variants.
Authors: Shudan Tan / Jinghua Zhao / Xue Hu / Yufeng Li / Zihan Wu / Guoliang Lu / Zhaoli Yu / Binhe Du / Yan Liu / Li Li / Yuchen Chen / Ye Li / Yanfeng Yao / Xiaoyu Zhang / Juhong Rao / Ge Gao / ...Authors: Shudan Tan / Jinghua Zhao / Xue Hu / Yufeng Li / Zihan Wu / Guoliang Lu / Zhaoli Yu / Binhe Du / Yan Liu / Li Li / Yuchen Chen / Ye Li / Yanfeng Yao / Xiaoyu Zhang / Juhong Rao / Ge Gao / Yun Peng / Hang Liu / Zhiming Yuan / Jia Liu / Qianran Wang / Hengrui Hu / Xiaobo Gao / Hui Zhou / Hang Yu / Yingjie Xu / Wei Yu / Lin Feng / Manli Wang / Chao Shan / Jing Lu / Jinzhong Lin /
Abstract: The global emergence of SARS-CoV-2 variants has led to increasing breakthrough infections in vaccinated populations, calling for an urgent need to develop more effective and broad-spectrum vaccines ...The global emergence of SARS-CoV-2 variants has led to increasing breakthrough infections in vaccinated populations, calling for an urgent need to develop more effective and broad-spectrum vaccines to combat COVID-19. Here we report the preclinical development of RQ3013, an mRNA vaccine candidate intended to bring broad protection against SARS-CoV-2 variants of concern (VOCs). RQ3013, which contains pseudouridine-modified mRNAs formulated in lipid nanoparticles, encodes the spike (S) protein harboring a combination of mutations responsible for immune evasion of VOCs. Here we characterized the expressed S immunogen and evaluated the immunogenicity, efficacy, and safety of RQ3013 in various animal models. RQ3013 elicited robust immune responses in mice, hamsters, and nonhuman primates (NHP). It can induce high titers of antibodies with broad cross-neutralizing ability against the wild-type, B.1.1.7, B.1.351, B.1.617.2, and the newly emerging Omicron variants. In mice and NHP, two doses of RQ3013 protected the upper and lower respiratory tract against infection by SARS-CoV-2 and its variants. Furthermore, our safety assessment of RQ3013 in NHP showed no observable adverse effects. These results provide strong support for the evaluation of RQ3013 in clinical trials and suggest that it may be a promising candidate for broad protection against COVID-19 and its variants.
History
DepositionMay 1, 2022-
Header (metadata) releaseMar 20, 2024-
Map releaseMar 20, 2024-
UpdateMar 20, 2024-
Current statusMar 20, 2024Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_33347.png

Downloads & links

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Map

FileDownload / File: emd_33347.map.gz / Format: CCP4 / Size: 512 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.1 Å
Density
Contour LevelBy AUTHOR: 0.3
Minimum - Maximum-0.8082482 - 2.0166473
Average (Standard dev.)-0.00009114404 (±0.03271268)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions512512512
Spacing512512512
CellA=B=C: 563.2 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_33347_msk_1.map
Projections & Slices
AxesZYX

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Half map: #1

Fileemd_33347_half_map_1.map
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Half map: #2

Fileemd_33347_half_map_2.map
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Sample components

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Entire : Severe acute respiratory syndrome coronavirus

EntireName: Severe acute respiratory syndrome coronavirus
Components
  • Complex: Severe acute respiratory syndrome coronavirusSARS-CoV-1
    • Protein or peptide: Spike glycoprotein,peptide
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
  • Ligand: alpha-D-mannopyranose

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Supramolecule #1: Severe acute respiratory syndrome coronavirus

SupramoleculeName: Severe acute respiratory syndrome coronavirus / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Details: the full-length S glycoprotein encoded by the Covid-19 mRNA vaccine candidate RQ3013
Source (natural)Organism: Severe acute respiratory syndrome coronavirus / Strain: chimera strain

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Macromolecule #1: Spike glycoprotein,peptide

MacromoleculeName: Spike glycoprotein,peptide / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 142.800703 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MFVFLVLLPL VSSQCVNLTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAISG TNGTKRFDNP VLPFNDGVY FASTEKSNII RGWIFGTTLD SKTQSLLIVN NATNVVIKVC EFQFCNDPFL GVYHKNNKSW MESEFRVYSS A NNCTFEYV ...String:
MFVFLVLLPL VSSQCVNLTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAISG TNGTKRFDNP VLPFNDGVY FASTEKSNII RGWIFGTTLD SKTQSLLIVN NATNVVIKVC EFQFCNDPFL GVYHKNNKSW MESEFRVYSS A NNCTFEYV SQPFLMDLEG KQGNFKNLRE FVFKNIDGYF KIYSKHTPIN LVRDLPQGFS ALEPLVDLPI GINITRFQTL LA LHRSYLT PGDSSSGWTA GAAAYYVGYL QPRTFLLKYN ENGTITDAVD CALDPLSETK CTLKSFTVEK GIYQTSNFRV QPT ESIVRF PNITNLCPFG EVFNATRFAS VYAWNRKRIS NCVADYSVLY NSASFSTFKC YGVSPTKLND LCFTNVYADS FVIR GDEVR QIAPGQTGNI ADYNYKLPDD FTGCVIAWNS NNLDSKVGGN YNYLYRLFRK SNLKPFERDI STEIYQAGST PCNGV KGFN CYFPLQSYGF QPTYGVGYQP YRVVVLSFEL LHAPATVCGP KKSTNLVKNK CVNFNFNGLT GTGVLTESNK KFLPFQ QFG RDIDDTTDAV RDPQTLEILD ITPCSFGGVS VITPGTNTSN QVAVLYQGVN CTEVPVAIHA DQLTPTWRVY STGSNVF QT RAGCLIGAEH VNNSYECDIP IGAGICASYQ TQTNSHGSAS SVASQSIIAY TMSLGVENSV AYSNNSIAIP TNFTISVT T EILPVSMTKT SVDCTMYICG DSTECSNLLL QYGSFCTQLN RALTGIAVEQ DKNTQEVFAQ VKQIYKTPPI KDFGGFNFS QILPDPSKPS KRSFIEDLLF NKVTLADAGF IKQYGDCLGD IAARDLICAQ KFNGLTVLPP LLTDEMIAQY TSALLAGTIT SGWTFGAGA ALQIPFAMQM AYRFNGIGVT QNVLYENQKL IANQFNSAIG KIQDSLSSTA SALGKLQDVV NQNAQALNTL V KQLSSNFG AISSVLNDIL SRLDKVEAEV 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 YIKWPWYIWL GFIAGLIAIV MVTIMLCCMT SCCSCLKGCC SCGSCCKGSL EVLFQGPSGS WSHPQFEKGG GSGGG SGGS AWSHPQFEK

UniProtKB: Spike glycoprotein

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Macromolecule #5: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 5 / Number of copies: 9 / 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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Macromolecule #6: alpha-D-mannopyranose

MacromoleculeName: alpha-D-mannopyranose / type: ligand / ID: 6 / Number of copies: 3 / Formula: MAN
Molecular weightTheoretical: 180.156 Da
Chemical component information

ChemComp-MAN:
alpha-D-mannopyranose / Mannose

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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 TECNAI ARCTICA
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: GATAN K3 (6k x 4k) / Average electron dose: 1.25 e/Å2
Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE
Initial angle assignmentType: NOT APPLICABLE
Final angle assignmentType: NOT APPLICABLE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 19454
FSC plot (resolution estimation)

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