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- EMDB-31624: Cryo-EM structure of South African (B.1.351) SARS-CoV-2 spike gly... -
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Open data
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Basic information
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Title | Cryo-EM structure of South African (B.1.351) SARS-CoV-2 spike glycoprotein in complex with two T6 Fab | |||||||||
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Function / homology | ![]() 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 | |||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.25 Å | |||||||||
![]() | Wang X / Zhang L / Zhang S / Liang Q | |||||||||
Funding support | 1 items
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![]() | ![]() Title: RBD trimer mRNA vaccine elicits broad and protective immune responses against SARS-CoV-2 variants. Authors: Qingtai Liang / Yifeng Wang / Shuyuan Zhang / Jing Sun / Wenbo Sun / Jizhou Li / Yaping Liu / Mingxi Li / Lin Cheng / Yuhang Jiang / Ruoke Wang / Rui Zhang / Zihan Yang / Yifei Ren / Peng ...Authors: Qingtai Liang / Yifeng Wang / Shuyuan Zhang / Jing Sun / Wenbo Sun / Jizhou Li / Yaping Liu / Mingxi Li / Lin Cheng / Yuhang Jiang / Ruoke Wang / Rui Zhang / Zihan Yang / Yifei Ren / Peng Chen / Peng Gao / Huayuan Yan / Zheng Zhang / Qi Zhang / Xuanling Shi / Jianbin Wang / Wanli Liu / Xinquan Wang / Bo Ying / Jincun Zhao / Hai Qi / Linqi Zhang / ![]() Abstract: With the rapid emergence and spread of SARS-CoV-2 variants, development of vaccines with broad and potent protectivity has become a global priority. Here, we designed a lipid nanoparticle- ...With the rapid emergence and spread of SARS-CoV-2 variants, development of vaccines with broad and potent protectivity has become a global priority. Here, we designed a lipid nanoparticle-encapsulated, nucleoside-unmodified mRNA (mRNA-LNP) vaccine encoding the trimerized receptor-binding domain (RBD trimer) and showed its robust capability in inducing broad and protective immune responses against wild-type and major variants of concern (VOCs) in the mouse model of SARS-CoV-2 infection. The protectivity was correlated with RBD-specific B cell responses especially the long-lived plasma B cells in bone marrow, strong ability in triggering BCR clustering, and downstream signaling. Monoclonal antibodies isolated from vaccinated animals demonstrated broad and potent neutralizing activity against VOCs tested. Structure analysis of one representative antibody identified a novel epitope with a high degree of conservation among different variants. Collectively, these results demonstrate that the RBD trimer mRNA vaccine serves as a promising vaccine candidate against SARS-CoV-2 variants and beyond. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 10.5 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 15.2 KB 15.2 KB | Display Display | ![]() |
Images | ![]() | 65.1 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7fjnMC ![]() 7fjoC ![]() 7fjsC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Voxel size | X=Y=Z: 1.0979 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
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Sample components
-Entire : S protein of South African (B.1.351) SARS-CoV-2 spike in complex ...
Entire | Name: S protein of South African (B.1.351) SARS-CoV-2 spike in complex with T6 Fab |
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Components |
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-Supramolecule #1: S protein of South African (B.1.351) SARS-CoV-2 spike in complex ...
Supramolecule | Name: S protein of South African (B.1.351) SARS-CoV-2 spike in complex with T6 Fab type: complex / Chimera: Yes / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 |
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Source (natural) | Organism: ![]() ![]() |
-Supramolecule #2: S protein of South African (B.1.351) SARS-CoV-2
Supramolecule | Name: S protein of South African (B.1.351) SARS-CoV-2 / type: complex / Chimera: Yes / ID: 2 / Parent: 1 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() |
Recombinant expression | Organism: ![]() |
-Supramolecule #3: T6 Fab
Supramolecule | Name: T6 Fab / type: complex / Chimera: Yes / ID: 3 / Parent: 1 / Macromolecule list: #2-#3 |
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-Macromolecule #1: Spike glycoprotein,Envelope glycoprotein
Macromolecule | Name: Spike glycoprotein,Envelope glycoprotein / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 141.515062 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: VNFTTRTQLP PAYTNSFTRG VYYPDKVFRS SVLHSTQDLF LPFFSNVTWF HAIHVSGTNG TKRFANPVLP FNDGVYFAST EKSNIIRGW IFGTTLDSKT QSLLIVNNAT NVVIKVCEFQ FCNDPFLGVY YHKNNKSWME SEFRVYSSAN NCTFEYVSQP F LMDLEGKQ ...String: VNFTTRTQLP PAYTNSFTRG VYYPDKVFRS SVLHSTQDLF LPFFSNVTWF HAIHVSGTNG TKRFANPVLP FNDGVYFAST EKSNIIRGW IFGTTLDSKT QSLLIVNNAT NVVIKVCEFQ FCNDPFLGVY YHKNNKSWME SEFRVYSSAN NCTFEYVSQP F LMDLEGKQ GNFKNLREFV FKNIDGYFKI YSKHTPINLV RGLPQGFSAL EPLVDLPIGI NITRFQTLHR SYLTPGDSSS GW TAGAAAY YVGYLQPRTF LLKYNENGTI TDAVDCALDP LSETKCTLKT FTVEKGIYQT SNFRVQPTES IVRFPNITNL CPF GEVFNA TRFASVYAWN RKRISNCVAD YSVLYNSASF STFKCYGVSP TKLNDLCFTN VYADSFVIRG DEVRQIAPGQ TGNI ADYNY KLPDDFTGCV IAWNSNNLDS KVGGNYNYLY RLFRKSNLKP FERDISTEIY QAGSTPCNGV KGFNCYFPLQ SYGFQ PTYG VGYQPYRVVV LSFELLHAPA TVCGPKKSTN LVKNKCVNFN FNGLTGTGVL TESNKKFLPF QQFGRDIADT TDAVRD PQT LEILDITPCS FGGVSVITPG TNTSNQVAVL YQGVNCTEVP VAIHADQLTP TWRVYSTGSN VFQTRAGCLI GAEHVNN SY ECDIPIGAGI CASYQTQTNS PGSASSVASQ SIIAYTMSLG VENSVAYSNN SIAIPTNFTI SVTTEILPVS MTKTSVDC T MYICGDSTEC SNLLLQYGSF CTQLNRALTG IAVEQDKNTQ EVFAQVKQIY KTPPIKDFGG FNFSQILPDP SKPSKRSFI EDLLFNKVTL ADAGFIKQYG DCLGDIAARD LICAQKFNGL TVLPPLLTDE MIAQYTSALL AGTITSGWTF GAGAALQIPF AMQMAYRFN GIGVTQNVLY ENQKLIANQF NSAIGKIQDS LSSTASALGK LQDVVNQNAQ ALNTLVKQLS SNFGAISSVL N DILSRLDP PEAEVQIDRL ITGRLQSLQT YVTQQLIRAA EIRASANLAA TKMSECVLGQ SKRVDFCGKG YHLMSFPQSA PH GVVFLHV TYVPAQEKNF TTAPAICHDG KAHFPREGVF VSNGTHWFVT QRNFYEPQII TTDNTFVSGN CDVVIGIVNN TVY DPLQPE LDSFKEELDK YFKNHTSPDV DLGDISGINA SVVNIQKEID RLNEVAKNLN ESLIDLQELG KYEQGSGYIP EAPR DGQAY VRKDGEWVLL STFLGRSLEV LFQGPGHHHH HHHHSAWSHP QFEKGGGSGG GGSGGSAWSH PQFEKGSDYK DDDDK |
-Macromolecule #2: T6 heavy chain
Macromolecule | Name: T6 heavy chain / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 12.833083 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: QVQLQQPGTE LVNPGASLKM SCKTSGYRFT SYIIHWVKQT PGQGLEWIGA IFPENDDTSY SQKFKGKATL TTDTSSSTAY MQLSSLTSE DSAVYYCARD GENVLDYWGQ GTSVTVSS |
-Macromolecule #3: T6 light chain
Macromolecule | Name: T6 light chain / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 12.572053 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: QIVLTQSPSS LAVSVGEKVT LSCKSSQSLL YSNNQKNYLA WYQQKSGRSP KLLLHWTSTR ESGVPDRFTG SGSGTDFTLT ISSVKAEDL AVYYCQQYYT YPWTFGGGTK LEIK |
-Macromolecule #4: 2-acetamido-2-deoxy-beta-D-glucopyranose
Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 4 / Number of copies: 25 / Formula: NAG |
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Molecular weight | Theoretical: 221.208 Da |
Chemical component information | ![]() ChemComp-NAG: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 2.2 mg/mL |
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Buffer | pH: 7.2 |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.5 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: PDB ENTRY PDB model - PDB ID: |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.25 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 286245 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |