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- EMDB-33130: Cryo-EM structure of SARS-CoV-2 Delta RBD in complex with BA7054 ... -
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Open data
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Basic information
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Title | Cryo-EM structure of SARS-CoV-2 Delta RBD in complex with BA7054 and BA7125 fab (local refinement) | |||||||||
![]() | Cryo-EM structure of SARS-CoV-2 Delta RBD in complex with BA7054 and BA7125 fab (local refinement) | |||||||||
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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: 3.2 Å | |||||||||
![]() | Liu Z / Liu S | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Biparatopic antibody BA7208/7125 effectively neutralizes SARS-CoV-2 variants including Omicron BA.1-BA.5. Authors: Yanqun Wang / An Yan / Deyong Song / Chuangchuang Dong / Muding Rao / Yuanzhu Gao / Ruxi Qi / Xiaomin Ma / Qiaoping Wang / Hongguang Xu / Hong Liu / Jing Han / Maoqin Duan / Shuo Liu / ...Authors: Yanqun Wang / An Yan / Deyong Song / Chuangchuang Dong / Muding Rao / Yuanzhu Gao / Ruxi Qi / Xiaomin Ma / Qiaoping Wang / Hongguang Xu / Hong Liu / Jing Han / Maoqin Duan / Shuo Liu / Xiaoping Yu / Mengqi Zong / Jianxia Feng / Jie Jiao / Huimin Zhang / Min Li / Beibei Yu / Yanxia Wang / Fanhao Meng / Xiaodan Ni / Ying Li / Zhenduo Shen / Baiping Sun / Xin Shao / Haifeng Zhao / Yanyan Zhao / Rui Li / Yanan Zhang / Guangying Du / Jun Lu / Chunna You / Hua Jiang / Lu Zhang / Lan Wang / Changlin Dou / Zheng Liu / Jincun Zhao / ![]() Abstract: SARS-CoV-2 Omicron subvariants have demonstrated extensive evasion from monoclonal antibodies (mAbs) developed for clinical use, which raises an urgent need to develop new broad-spectrum mAbs. Here, ...SARS-CoV-2 Omicron subvariants have demonstrated extensive evasion from monoclonal antibodies (mAbs) developed for clinical use, which raises an urgent need to develop new broad-spectrum mAbs. Here, we report the isolation and analysis of two anti-RBD neutralizing antibodies BA7208 and BA7125 from mice engineered to produce human antibodies. While BA7125 showed broadly neutralizing activity against all variants except the Omicron sublineages, BA7208 was potently neutralizing against all tested SARS-CoV-2 variants (including Omicron BA.1-BA.5) except Mu. By combining BA7208 and BA7125 through the knobs-into-holes technology, we generated a biparatopic antibody BA7208/7125 that was able to neutralize all tested circulating SARS-CoV-2 variants. Cryo-electron microscopy structure of these broad-spectrum antibodies in complex with trimeric Delta and Omicron spike indicated that the contact residues are highly conserved and had minimal interactions with mutational residues in RBD of current variants. In addition, we showed that administration of BA7208/7125 via the intraperitoneal, intranasal, or aerosol inhalation route showed potent therapeutic efficacy against Omicron BA.1 and BA.2 in hACE2-transgenic and wild-type mice and, separately, effective prophylaxis. BA7208/7125 thus has the potential to be an effective candidate as an intervention against COVID-19. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 167.4 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 21.2 KB 21.2 KB | Display Display | ![]() |
Images | ![]() | 738.5 KB | ||
Others | ![]() ![]() | 165 MB 165 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7xczMC ![]() 7xdaC ![]() 7xdbC ![]() 7xdkC ![]() 7xdlC 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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Annotation | Cryo-EM structure of SARS-CoV-2 Delta RBD in complex with BA7054 and BA7125 fab (local refinement) | ||||||||||||||||||||
Voxel size | X=Y=Z: 1.072 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: Cryo-EM structure of SARS-CoV-2 Delta RBD in complex...
File | emd_33130_half_map_1.map | ||||||||||||
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Annotation | Cryo-EM structure of SARS-CoV-2 Delta RBD in complex with BA7054 and BA7125 fab (local refinement) | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Cryo-EM structure of SARS-CoV-2 Delta RBD in complex...
File | emd_33130_half_map_2.map | ||||||||||||
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Annotation | Cryo-EM structure of SARS-CoV-2 Delta RBD in complex with BA7054 and BA7125 fab (local refinement) | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
-Entire : Cryo-EM structure of SARS-CoV-2 Delta RBD in complex with BA7054 ...
Entire | Name: Cryo-EM structure of SARS-CoV-2 Delta RBD in complex with BA7054 and BA7125 fab (local refinement) |
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Components |
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-Supramolecule #1: Cryo-EM structure of SARS-CoV-2 Delta RBD in complex with BA7054 ...
Supramolecule | Name: Cryo-EM structure of SARS-CoV-2 Delta RBD in complex with BA7054 and BA7125 fab (local refinement) type: complex / ID: 1 / Chimera: Yes / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() ![]() |
-Supramolecule #2: SARS-CoV-2 Delta RBD
Supramolecule | Name: SARS-CoV-2 Delta RBD / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() |
-Supramolecule #3: BA7054 and BA7125 fab
Supramolecule | Name: BA7054 and BA7125 fab / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2-#5 |
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-Macromolecule #1: Spike glycoprotein
Macromolecule | Name: Spike glycoprotein / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 22.074787 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: TNLCPFGEVF NATRFASVYA WNRKRISNCV ADYSVLYNSA SFSTFKCYGV SPTKLNDLCF TNVYADSFVI RGDEVRQIAP GQTGKIADY NYKLPDDFTG CVIAWNSNNL DSKVGGNYNY RYRLFRKSNL KPFERDISTE IYQAGSKPCN GVEGFNCYFP L QSYGFQPT ...String: TNLCPFGEVF NATRFASVYA WNRKRISNCV ADYSVLYNSA SFSTFKCYGV SPTKLNDLCF TNVYADSFVI RGDEVRQIAP GQTGKIADY NYKLPDDFTG CVIAWNSNNL DSKVGGNYNY RYRLFRKSNL KPFERDISTE IYQAGSKPCN GVEGFNCYFP L QSYGFQPT NGVGYQPYRV VVLSFELLHA PATVCGPK |
-Macromolecule #2: BA7054 fab
Macromolecule | Name: BA7054 fab / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 23.714527 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: EVQLVESGGG VVQPGRSLRL SCAASGFTFS SYAMHWVRQA PGKGLEWVAV ISFDGSNKYY ADSVKGRFTI SRDNSKNTLY LQMNSLRAE DTAVYYCARA SITTTDDGMD VWGQGTTVTV SSASTKGPSV FPLAPSSKST SGGTAALGCL VKDYFPEPVT V SWNSGALT ...String: EVQLVESGGG VVQPGRSLRL SCAASGFTFS SYAMHWVRQA PGKGLEWVAV ISFDGSNKYY ADSVKGRFTI SRDNSKNTLY LQMNSLRAE DTAVYYCARA SITTTDDGMD VWGQGTTVTV SSASTKGPSV FPLAPSSKST SGGTAALGCL VKDYFPEPVT V SWNSGALT SGVHTFPAVL QSSGLYSLSS VVTVPSSSLG TQTYICNVNH KPSNTKVDKK VEPKSC |
-Macromolecule #3: BA7054 fab
Macromolecule | Name: BA7054 fab / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 23.191715 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: DIQMTQSPSS VSASVGDRVT ITCRASQGIS SWLAWYQQKP GKAPKLLIYA ASSLQSGVPS RFSGSGSGTD FTLTISSLQP EDFATYYCQ QANSFPFSFG PGTKVDIKRT VAAPSVFIFP PSDEQLKSGT ASVVCLLNNF YPREAKVQWK VDNALQSGNS Q ESVTEQDS ...String: DIQMTQSPSS VSASVGDRVT ITCRASQGIS SWLAWYQQKP GKAPKLLIYA ASSLQSGVPS RFSGSGSGTD FTLTISSLQP EDFATYYCQ QANSFPFSFG PGTKVDIKRT VAAPSVFIFP PSDEQLKSGT ASVVCLLNNF YPREAKVQWK VDNALQSGNS Q ESVTEQDS KDSTYSLSST LTLSKADYEK HKVYACEVTH QGLSSPVTKS FNRGEC |
-Macromolecule #4: BA7125 fab
Macromolecule | Name: BA7125 fab / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 23.514258 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: EVQLQQWGAG LLKPSETLSL TCAVYGESFS GYYWSWIRQS PGKGLEWIGQ INHSGNTNYN PSLKSRVTMS VDTSKNQFSL KLSSVTAAD TAVYYCAREL GHDYWGQGTL VTVSSASTKG PSVFPLAPSS KSTSGGTAAL GCLVKDYFPE PVTVSWNSGA L TSGVHTFP ...String: EVQLQQWGAG LLKPSETLSL TCAVYGESFS GYYWSWIRQS PGKGLEWIGQ INHSGNTNYN PSLKSRVTMS VDTSKNQFSL KLSSVTAAD TAVYYCAREL GHDYWGQGTL VTVSSASTKG PSVFPLAPSS KSTSGGTAAL GCLVKDYFPE PVTVSWNSGA L TSGVHTFP AVLQSSGLYS LSSVVTVPSS SLGTQTYICN VNHKPSNTKV DKKVEPKSCD KT |
-Macromolecule #5: BA7125 fab
Macromolecule | Name: BA7125 fab / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 23.328883 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: EIVMTQSPGT LSLSPGERAT LSCRASQSIS SSYLAWFQQK PGQAPRLLIY GASSRAPGIP DRFSGSGSGT DFTLTISRLE PEDFAVYYC QQYGDSPLTF GGGTKVDIKR TVAAPSVFIF PPSDEQLKSG TASVVCLLNN FYPREAKVQW KVDNALQSGN S QESVTEQD ...String: EIVMTQSPGT LSLSPGERAT LSCRASQSIS SSYLAWFQQK PGQAPRLLIY GASSRAPGIP DRFSGSGSGT DFTLTISRLE PEDFAVYYC QQYGDSPLTF GGGTKVDIKR TVAAPSVFIF PPSDEQLKSG TASVVCLLNN FYPREAKVQW KVDNALQSGN S QESVTEQD SKDSTYSLSS TLTLSKADYE KHKVYACEVT HQGLSSPVTK SFNRGEC |
-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: 8 |
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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 BIOQUANTUM (6k x 4k) / Average electron dose: 1.39 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 5.0 µm / Nominal defocus min: 1.2 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 246808 |
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Initial angle assignment | Type: OTHER |
Final angle assignment | Type: OTHER |