[English] 日本語
![](img/lk-miru.gif)
- EMDB-32641: Locally refined region of SARS-CoV-2 Spike in complex with IgG 553-15 -
+
Open data
-
Basic information
Entry | ![]() | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Locally refined region of SARS-CoV-2 Spike in complex with IgG 553-15 | |||||||||
![]() | ||||||||||
![]() |
| |||||||||
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 / 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 / ![]() ![]() ![]() ![]() ![]() Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() | |||||||||
Method | ![]() ![]() | |||||||||
![]() | Zhan WQ / Zhang X / Chen ZG / Sun L | |||||||||
Funding support | ![]()
| |||||||||
![]() | ![]() Title: Structural Study of SARS-CoV-2 Antibodies Identifies a Broad-Spectrum Antibody That Neutralizes the Omicron Variant by Disassembling the Spike Trimer. Authors: Wuqiang Zhan / Xiaolong Tian / Xiang Zhang / Shenghui Xing / Wenping Song / Qianying Liu / Aihua Hao / Yuxia Hu / Meng Zhang / Tianlei Ying / Zhenguo Chen / Fei Lan / Lei Sun / ![]() Abstract: The continuous emergence of novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants poses new challenges in the fight against the coronavirus disease 2019 (COVID-19) pandemic. The ...The continuous emergence of novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants poses new challenges in the fight against the coronavirus disease 2019 (COVID-19) pandemic. The newly emerging Omicron strain caused serious immune escape and raised unprecedented concern all over the world. The development of an antibody targeting a conserved and universal epitope is urgently needed. A subset of neutralizing antibodies (NAbs) against COVID-19 from convalescent patients were isolated in our previous study. In this study, we investigated the accommodation of these NAbs to SARS-CoV-2 variants of concern (VOCs), revealing that IgG 553-49 neutralizes pseudovirus of the SARS-CoV-2 Omicron variant. In addition, we determined the cryo-electron microscopy (cryo-EM) structure of the SARS-CoV-2 spike (S) protein complexed with three monoclonal antibodies targeting different epitopes, including 553-49, 553-15, and 553-60. Notably, 553-49 targets a novel conserved epitope and neutralizes the virus by disassembling S trimers. IgG 553-15, an antibody that neutralizes all of the VOCs except Omicron, cross-links two S trimers to form a trimer dimer, demonstrating that 553-15 neutralizes the virus by steric hindrance and virion aggregation. These findings suggest the potential to develop 553-49 and other antibodies targeting this highly conserved epitope as promising therapeutic reagents for COVID-19. The emergence of the Omicron strain of SARS-CoV-2 caused higher immune escape, raising unprecedented concerns about the effectiveness of antibody therapies and vaccines. In this study, we identified a SARS-CoV-2 neutralizing antibody, 553-49, which neutralizes all variants by targeting a completely conserved novel epitope. In addition, we revealed that IgG 553-15 neutralizes SARS-CoV-2 by cross-linking virions and that 553-60 functions by blocking receptor binding. Comparison of different receptor binding domain (RBD) epitopes revealed that the 553-49 epitope is hidden in the S trimer and keeps a high degree of conservation during SARS-CoV-2 evolution, making 553-49 a promising therapeutic reagent against the emerging Omicron and future variants of SARS-CoV-2. | |||||||||
History |
|
-
Structure visualization
Supplemental images |
---|
-
Downloads & links
-EMDB archive
Map data | ![]() | 11.7 MB | ![]() | |
---|---|---|---|---|
Header (meta data) | ![]() ![]() | 12.5 KB 12.5 KB | Display Display | ![]() |
Images | ![]() | 119.2 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7wo7MC ![]() 7wo4C ![]() 7wo5C ![]() 7woaC ![]() 7wobC ![]() 7wocC ![]() 7wogC ![]() 7wz1C ![]() 7wz2C M: atomic model generated by this map C: citing same article ( |
---|---|
Similar structure data | Similarity search - Function & homology ![]() |
-
Links
EMDB pages | ![]() ![]() |
---|---|
Related items in Molecule of the Month |
-
Map
File | ![]() | ||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Voxel size | X=Y=Z: 1.07 Å | ||||||||||||||||||||
Density |
| ||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
|
-Supplemental data
-
Sample components
-Entire : Spike with mAb15
Entire | Name: Spike with mAb15 |
---|---|
Components |
|
-Supramolecule #1: Spike with mAb15
Supramolecule | Name: Spike with mAb15 / type: complex / Chimera: Yes / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 |
---|---|
Source (natural) | Organism: ![]() ![]() ![]() |
Recombinant expression | Organism: ![]() ![]() |
-Macromolecule #1: mAb15 VH
Macromolecule | Name: mAb15 VH / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 24.194086 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: EVQLVQSGGG LVQPGGSLRL SCAASGFTFS SYWMSWVRQA PGKGLEWVAN INQDGGEKYY VDSVKGRFTI SRDNAKNSLF LQMNSVRAE DTAVYFCARV WYYYGPRDYW GQGTLVTVSS ASTKGPSVFP LAPSSKSTSG GTAALGCLVK DYFPEPVTVS W NSGALTSG ...String: EVQLVQSGGG LVQPGGSLRL SCAASGFTFS SYWMSWVRQA PGKGLEWVAN INQDGGEKYY VDSVKGRFTI SRDNAKNSLF LQMNSVRAE DTAVYFCARV WYYYGPRDYW GQGTLVTVSS ASTKGPSVFP LAPSSKSTSG GTAALGCLVK DYFPEPVTVS W NSGALTSG VHTFPAVLQS SGLYSLSSVV TVPSSSLGTQ TYICNVNHKP SNTKVDKRVE PKSCDKT |
-Macromolecule #2: mAb15 VL
Macromolecule | Name: mAb15 VL / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 23.315426 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: DIVMTQPHSV SESPGKTVTI SCTRSSGSIA SNYVQWYQQR PGSSPTTVIY EDNQRPSGVP DRFSGSIDSS SNSASLTISG LKTEDEADY YCQSYDGSNH NVVFGGGTEL TVLSQPKAAP SVTLFPPSSE ELQANKATLV CLISDFYPGA VTVAWKADSS P VKAGVETT ...String: DIVMTQPHSV SESPGKTVTI SCTRSSGSIA SNYVQWYQQR PGSSPTTVIY EDNQRPSGVP DRFSGSIDSS SNSASLTISG LKTEDEADY YCQSYDGSNH NVVFGGGTEL TVLSQPKAAP SVTLFPPSSE ELQANKATLV CLISDFYPGA VTVAWKADSS P VKAGVETT TPSKQSNNKY AASSYLSLTP EQWKSHRSYS CQVTHEGSTV EKTVAPTECS |
-Macromolecule #3: Spike protein S1
Macromolecule | Name: Spike protein S1 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: ![]() ![]() ![]() |
Molecular weight | Theoretical: 21.772391 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: NLCPFGEVFN ATRFASVYAW NRKRISNCVA DYSVLYNSAS FSTFKCYGVS PTKLNDLCFT NVYADSFVIR GDEVRQIAPG QTGKIADYN YKLPDDFTGC VIAWNSNNLD SKVGGNYNYL YRLFRKSNLK PFERDISTEI YQAGSTPCNG VEGFNCYFPL Q SYGFQPTN ...String: NLCPFGEVFN ATRFASVYAW NRKRISNCVA DYSVLYNSAS FSTFKCYGVS PTKLNDLCFT NVYADSFVIR GDEVRQIAPG QTGKIADYN YKLPDDFTGC VIAWNSNNLD SKVGGNYNYL YRLFRKSNLK PFERDISTEI YQAGSTPCNG VEGFNCYFPL Q SYGFQPTN GVGYQPYRVV VLSFELLHAP ATVCGP |
-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: 1 / Formula: NAG |
---|---|
Molecular weight | Theoretical: 221.208 Da |
Chemical component information | ![]() ChemComp-NAG: |
-Experimental details
-Structure determination
Method | ![]() |
---|---|
![]() | ![]() |
Aggregation state | particle |
-
Sample preparation
Buffer | pH: 8 |
---|---|
Vitrification | Cryogen name: ETHANE |
-
Electron microscopy
Microscope | FEI TITAN KRIOS |
---|---|
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD![]() |
Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 61.0 e/Å2 |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
-
Image processing
Initial angle assignment | Type: PROJECTION MATCHING |
---|---|
Final angle assignment | Type: PROJECTION MATCHING |
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 199441 |