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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-32434 | |||||||||
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Title | SARS-CoV-2 Beta spike SD1 in complex with S3H3 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: 4.3 Å | |||||||||
![]() | Wang YF / Cong Y | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Mapping cross-variant neutralizing sites on the SARS-CoV-2 spike protein. Authors: Shiqi Xu / Yifan Wang / Yanxing Wang / Chao Zhang / Qin Hong / Chenjian Gu / Rong Xu / Tingfeng Wang / Yong Yang / Jinkai Zang / Yu Zhou / Zuyang Li / Qixing Liu / Bingjie Zhou / Lulu Bai / ...Authors: Shiqi Xu / Yifan Wang / Yanxing Wang / Chao Zhang / Qin Hong / Chenjian Gu / Rong Xu / Tingfeng Wang / Yong Yang / Jinkai Zang / Yu Zhou / Zuyang Li / Qixing Liu / Bingjie Zhou / Lulu Bai / Yuanfei Zhu / Qiang Deng / Haikun Wang / Dimitri Lavillette / Gary Wong / Youhua Xie / Yao Cong / Zhong Huang / ![]() Abstract: The emergence of multiple severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern threatens the efficacy of currently approved vaccines and authorized therapeutic monoclonal ...The emergence of multiple severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern threatens the efficacy of currently approved vaccines and authorized therapeutic monoclonal antibodies (MAbs). It is hence important to continue searching for SARS-CoV-2 broadly neutralizing MAbs and defining their epitopes. Here, we isolate 9 neutralizing mouse MAbs raised against the spike protein of a SARS-CoV-2 prototype strain and evaluate their neutralizing potency towards a panel of variants, including B.1.1.7, B.1.351, B.1.617.1, and B.1.617.2. By using a combination of biochemical, virological, and cryo-EM structural analyses, we identify three types of cross-variant neutralizing MAbs, represented by S5D2, S5G2, and S3H3, respectively, and further define their epitopes. S5D2 binds the top lateral edge of the receptor-binding motif within the receptor-binding domain (RBD) with a binding footprint centred around the loop, and efficiently neutralizes all variant pseudoviruses, but the potency against B.1.617.2 was observed to decrease significantly. S5G2 targets the highly conserved RBD core region and exhibits comparable neutralization towards the variant panel. S3H3 binds a previously unreported epitope located within the evolutionarily stable SD1 region and is able to near equally neutralize all of the variants tested. Our work thus defines three distinct cross-variant neutralizing sites on the SARS-CoV-2 spike protein, providing guidance for design and development of broadly effective vaccines and MAb-based therapies. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 1.2 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 15.1 KB 15.1 KB | Display Display | ![]() |
Images | ![]() | 122.4 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7wd8MC ![]() 7wcrC ![]() 7wczC ![]() 7wd0C ![]() 7wd7C ![]() 7wd9C ![]() 7wdfC M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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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: 1.093 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : SARS-CoV-2 Beta spike in complex with S3H3 Fab
Entire | Name: SARS-CoV-2 Beta spike in complex with S3H3 Fab |
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Components |
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-Supramolecule #1: SARS-CoV-2 Beta spike in complex with S3H3 Fab
Supramolecule | Name: SARS-CoV-2 Beta spike in complex with S3H3 Fab / type: complex / Chimera: Yes / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() ![]() |
-Supramolecule #2: SARS-CoV-2 spike protein
Supramolecule | Name: SARS-CoV-2 spike protein / type: complex / Chimera: Yes / ID: 2 / Parent: 1 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() ![]() |
-Supramolecule #3: Heavy chain of S3H3 Fab
Supramolecule | Name: Heavy chain of S3H3 Fab / type: complex / Chimera: Yes / ID: 3 / Parent: 1 / Macromolecule list: #2 |
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-Supramolecule #4: Light chain of S3H3 Fab
Supramolecule | Name: Light chain of S3H3 Fab / type: complex / Chimera: Yes / ID: 4 / Parent: 1 / Macromolecule list: #3 |
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Source (natural) | Organism: ![]() ![]() |
-Supramolecule #5: partial spike of SARS-CoV-2 Beta variant
Supramolecule | Name: partial spike of SARS-CoV-2 Beta variant / type: complex / Chimera: Yes / ID: 5 / Parent: 1 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() ![]() |
-Macromolecule #1: Spike glycoprotein
Macromolecule | Name: Spike glycoprotein / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 139.650516 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MFVFLVLLPL VSSQCVNFTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIHV SGTNGTKRFA NPVLPFNDG VYFASTEKSN IIRGWIFGTT LDSKTQSLLI VNNATNVVIK VCEFQFCNDP FLGVYYHKNN KSWMESEFRV Y SSANNCTF ...String: MFVFLVLLPL VSSQCVNFTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIHV SGTNGTKRFA NPVLPFNDG VYFASTEKSN IIRGWIFGTT LDSKTQSLLI VNNATNVVIK VCEFQFCNDP FLGVYYHKNN KSWMESEFRV Y SSANNCTF EYVSQPFLMD LEGKQGNFKN LREFVFKNID GYFKIYSKHT PINLVRGLPQ GFSALEPLVD LPIGINITRF QT LHISYLT 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 RDIADTTDAV RDPQTLEILD ITPCSFGGVS VITPGTNTSN QVAVLYQGVN CTEVPVAIHA DQLTPTWRVY STGSNVF QT RAGCLIGAEH VNNSYECDIP IGAGICASYQ TQTNSPGSAS 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 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 |
-Macromolecule #2: Heavy chain of S3H3 Fab
Macromolecule | Name: Heavy chain of S3H3 Fab / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 23.619521 KDa |
Sequence | String: 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 |
-Macromolecule #3: Light chain of S3H3 Fab
Macromolecule | Name: Light chain of S3H3 Fab / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 23.5401 KDa |
Sequence | String: 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 |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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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: 2.5 µm / Nominal defocus min: 0.8 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: EMDB MAP EMDB ID: |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 4.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 102262 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |