[English] 日本語
![](img/lk-miru.gif)
- EMDB-34406: Local refinement of SARS-CoV-2 Omicron BA.1 Spike glycoprotein in... -
+
Open data
-
Basic information
Entry | ![]() | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Local refinement of SARS-CoV-2 Omicron BA.1 Spike glycoprotein in complex with rabbit monoclonal antibody 1H1 Fab | |||||||||
![]() | ||||||||||
![]() |
| |||||||||
![]() | VIRAL PROTEIN-IMMUNE SYSTEM COMPLEX | |||||||||
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: 3.52 Å | |||||||||
![]() | Guo H / Gao Y / Lu Y / Yang H / Ji X | |||||||||
Funding support | ![]()
| |||||||||
![]() | ![]() Title: Mechanism of a rabbit monoclonal antibody broadly neutralizing SARS-CoV-2 variants. Authors: Hangtian Guo / Yixuan Yang / Tiantian Zhao / Yuchi Lu / Yan Gao / Tinghan Li / Hang Xiao / Xiaoyu Chu / Le Zheng / Wanting Li / Hao Cheng / Haibin Huang / Yang Liu / Yang Lou / Henry C ...Authors: Hangtian Guo / Yixuan Yang / Tiantian Zhao / Yuchi Lu / Yan Gao / Tinghan Li / Hang Xiao / Xiaoyu Chu / Le Zheng / Wanting Li / Hao Cheng / Haibin Huang / Yang Liu / Yang Lou / Henry C Nguyen / Chao Wu / Yuxin Chen / Haitao Yang / Xiaoyun Ji / ![]() Abstract: Due to the continuous evolution of SARS-CoV-2, the Omicron variant has emerged and exhibits severe immune evasion. The high number of mutations at key antigenic sites on the spike protein has made a ...Due to the continuous evolution of SARS-CoV-2, the Omicron variant has emerged and exhibits severe immune evasion. The high number of mutations at key antigenic sites on the spike protein has made a large number of existing antibodies and vaccines ineffective against this variant. Therefore, it is urgent to develop efficient broad-spectrum neutralizing therapeutic drugs. Here we characterize a rabbit monoclonal antibody (RmAb) 1H1 with broad-spectrum neutralizing potency against Omicron sublineages including BA.1, BA.1.1, BA.2, BA.2.12.1, BA.2.75, BA.3 and BA.4/5. Cryo-electron microscopy (cryo-EM) structure determination of the BA.1 spike-1H1 Fab complexes shows that 1H1 targets a highly conserved region of RBD and avoids most of the circulating Omicron mutations, explaining its broad-spectrum neutralization potency. Our findings indicate 1H1 as a promising RmAb model for designing broad-spectrum neutralizing antibodies and shed light on the development of therapeutic agents as well as effective vaccines against newly emerging variants in the future. | |||||||||
History |
|
-
Structure visualization
Supplemental images |
---|
-
Downloads & links
-EMDB archive
Map data | ![]() | 483.2 MB | ![]() | |
---|---|---|---|---|
Header (meta data) | ![]() ![]() | 17 KB 17 KB | Display Display | ![]() |
Images | ![]() | 48.7 KB | ||
Filedesc metadata | ![]() | 5.6 KB | ||
Others | ![]() ![]() | 475.5 MB 475.5 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8gzzMC ![]() 8h00C ![]() 8h01C ![]() 8ituC 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: 0.832 Å | ||||||||||||||||||||
Density |
| ||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
|
-Supplemental data
-Half map: #2
File | emd_34406_half_map_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & Slices |
| ||||||||||||
Density Histograms |
-Half map: #1
File | emd_34406_half_map_2.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & Slices |
| ||||||||||||
Density Histograms |
-
Sample components
-Entire : SARS-CoV-2 Omicron spike glycoprotein complex with 55A8 Fab
Entire | Name: SARS-CoV-2 Omicron spike glycoprotein complex with 55A8 Fab |
---|---|
Components |
|
-Supramolecule #1: SARS-CoV-2 Omicron spike glycoprotein complex with 55A8 Fab
Supramolecule | Name: SARS-CoV-2 Omicron spike glycoprotein complex with 55A8 Fab type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
---|---|
Source (natural) | Organism: ![]() ![]() |
-Supramolecule #2: Omicron spike glycoprotein
Supramolecule | Name: Omicron spike glycoprotein / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1 Details: SARS-CoV-2 Omicron BA.1 variant spike protein receptor binding domain |
---|---|
Source (natural) | Organism: ![]() ![]() |
-Supramolecule #3: 1H1 Fab
Supramolecule | Name: 1H1 Fab / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2-#3 Details: Fab fragment generated by proteolytic cleavage of IgG antibody |
---|
-Macromolecule #1: Spike protein S1
Macromolecule | Name: Spike protein S1 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 22.065934 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: NLCPFDEVFN ATRFASVYAW NRKRISNCVA DYSVLYNLAP FFTFKCYGVS PTKLNDLCFT NVYADSFVIR GDEVRQIAPG QTGNIADYN YKLPDDFTGC VIAWNSNKLD SKVSGNYNYL YRLFRKSNLK PFERDISTEI YQAGNKPCNG VAGFNCYFPL R SYSFRPTY ...String: NLCPFDEVFN ATRFASVYAW NRKRISNCVA DYSVLYNLAP FFTFKCYGVS PTKLNDLCFT NVYADSFVIR GDEVRQIAPG QTGNIADYN YKLPDDFTGC VIAWNSNKLD SKVSGNYNYL YRLFRKSNLK PFERDISTEI YQAGNKPCNG VAGFNCYFPL R SYSFRPTY GVGHQPYRVV VLSFELLHAP ATVCGP UniProtKB: Spike glycoprotein |
-Macromolecule #2: rabbit monoclonal antibody 1H1 Fab light chain
Macromolecule | Name: rabbit monoclonal antibody 1H1 Fab light chain / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 11.739082 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: DIVMTQTPAS VSEPVGGTVT IKCQASESIS NWLAWYQQKP GQPPKLLIYA AFTLASGVPS RFKGSGSGTQ FTLTINGVEC ADAATYYCQ QTYSSRDVDN VFGGGTEVVV KG |
-Macromolecule #3: rabbit monoclonal antibody 1H1 Fab heavy chain
Macromolecule | Name: rabbit monoclonal antibody 1H1 Fab heavy chain / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 12.863201 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: QSLEESGGDL VKPGASLTLT CTASGFSFSS GYDMCWVRQA PGKGLEWIAC IGTGSSGNIY YASWAKGRFT ISKTSSTTVT LQMTSLTAA DTATYFCARD DADYAGPDYF NLWGPGTLVT VSS |
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
![]() | single particle reconstruction |
Aggregation state | particle |
-
Sample preparation
Buffer | pH: 7.4 |
---|---|
Vitrification | Cryogen name: ETHANE |
-
Electron microscopy
Microscope | FEI TITAN KRIOS |
---|---|
Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 60.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.8000000000000003 µm / Nominal defocus min: 1.2 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
-
Image processing
Startup model | Type of model: NONE |
---|---|
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.52 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 207777 |
Initial angle assignment | Type: COMMON LINE |
Final angle assignment | Type: COMMON LINE |