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- EMDB-33690: Cryo-EM structure of apo SARS-CoV-2 Omicron spike protein (S-2P-GSAS) -
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Open data
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Basic information
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Title | Cryo-EM structure of apo SARS-CoV-2 Omicron spike protein (S-2P-GSAS) | |||||||||
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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: 3.0 Å | |||||||||
![]() | Zhao ZN / Xie YF / Qi JX / Gao GF | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Omicron SARS-CoV-2 mutations stabilize spike up-RBD conformation and lead to a non-RBM-binding monoclonal antibody escape. Authors: Zhennan Zhao / Jingya Zhou / Mingxiong Tian / Min Huang / Sheng Liu / Yufeng Xie / Pu Han / Chongzhi Bai / Pengcheng Han / Anqi Zheng / Lutang Fu / Yuanzhu Gao / Qi Peng / Ying Li / Yan Chai ...Authors: Zhennan Zhao / Jingya Zhou / Mingxiong Tian / Min Huang / Sheng Liu / Yufeng Xie / Pu Han / Chongzhi Bai / Pengcheng Han / Anqi Zheng / Lutang Fu / Yuanzhu Gao / Qi Peng / Ying Li / Yan Chai / Zengyuan Zhang / Xin Zhao / Hao Song / Jianxun Qi / Qihui Wang / Peiyi Wang / George F Gao / ![]() Abstract: Omicron SARS-CoV-2 is rapidly spreading worldwide. To delineate the impact of emerging mutations on spike's properties, we performed systematic structural analyses on apo Omicron spike and its ...Omicron SARS-CoV-2 is rapidly spreading worldwide. To delineate the impact of emerging mutations on spike's properties, we performed systematic structural analyses on apo Omicron spike and its complexes with human ACE2 or S309 neutralizing antibody (NAb) by cryo-EM. The Omicron spike preferentially adopts the one-RBD-up conformation both before and after ACE2 binding, which is in sharp contrast to the orchestrated conformational changes to create more up-RBDs upon ACE2 binding as observed in the prototype and other four variants of concern (VOCs). Furthermore, we found that S371L, S373P and S375F substitutions enhance the stability of the one-RBD-up conformation to prevent exposing more up-RBDs triggered by ACE2 binding. The increased stability of the one-RBD-up conformation restricts the accessibility of S304 NAb, which targets a cryptic epitope in the closed conformation, thus facilitating the immune evasion by Omicron. These results expand our understanding of Omicron spike's conformation, receptor binding and antibody evasion mechanism. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 217 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 15.6 KB 15.6 KB | Display Display | ![]() |
Images | ![]() | 45.2 KB | ||
Others | ![]() ![]() | 226.4 MB 226.4 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7y9sMC ![]() 7y9zC ![]() 7ya0C ![]() 7ya1C ![]() 7yadC 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: 1.11 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #2
File | emd_33690_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_33690_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : Cryo-EM structure of SARS-CoV-2 Omicron spike protein
Entire | Name: Cryo-EM structure of SARS-CoV-2 Omicron spike protein |
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Components |
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-Supramolecule #1: Cryo-EM structure of SARS-CoV-2 Omicron spike protein
Supramolecule | Name: Cryo-EM structure of SARS-CoV-2 Omicron spike protein / type: complex / Chimera: Yes / ID: 1 / Parent: 0 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() ![]() |
Recombinant expression | Organism: ![]() |
-Macromolecule #1: Spike glycoprotein
Macromolecule | Name: Spike glycoprotein / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 138.842375 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MPRGPVAALL LLILHGAWSC VNLTTRTQLP PAYTNSFTRG VYYPDKVFRS SVLHSTQDLF LPFFSNVTWF HVISGTNGTK RFDNPVLPF NDGVYFASIE KSNIIRGWIF GTTLDSKTQS LLIVNNATNV VIKVCEFQFC NDPFLDHKNN KSWMESEFRV Y SSANNCTF ...String: MPRGPVAALL LLILHGAWSC VNLTTRTQLP PAYTNSFTRG VYYPDKVFRS SVLHSTQDLF LPFFSNVTWF HVISGTNGTK RFDNPVLPF NDGVYFASIE KSNIIRGWIF GTTLDSKTQS LLIVNNATNV VIKVCEFQFC NDPFLDHKNN KSWMESEFRV Y SSANNCTF EYVSQPFLMD LEGKQGNFKN LREFVFKNID GYFKIYSKHT PIIVREPEDL PQGFSALEPL VDLPIGINIT RF QTLLALH RSYLTPGDSS SGWTAGAAAY YVGYLQPRTF LLKYNENGTI TDAVDCALDP LSETKCTLKS FTVEKGIYQT SNF RVQPTE SIVRFPNITN LCPFDEVFNA TRFASVYAWN RKRISNCVAD YSVLYNLAPF FTFKCYGVSP TKLNDLCFTN VYAD SFVIR GDEVRQIAPG QTGNIADYNY KLPDDFTGCV IAWNSNKLDS KVSGNYNYLY RLFRKSNLKP FERDISTEIY QAGNK PCNG VAGFNCYFPL RSYSFRPTYG VGHQPYRVVV LSFELLHAPA TVCGPKKSTN LVKNKCVNFN FNGLKGTGVL TESNKK FLP FQQFGRDIAD TTDAVRDPQT LEILDITPCS FGGVSVITPG TNTSNQVAVL YQGVNCTEVP VAIHADQLTP TWRVYST GS NVFQTRAGCL IGAEYVNNSY ECDIPIGAGI CASYQTQTKS HGSASSVASQ SIIAYTMSLG AENSVAYSNN SIAIPTNF T ISVTTEILPV SMTKTSVDCT MYICGDSTEC SNLLLQYGSF CTQLKRALTG IAVEQDKNTQ EVFAQVKQIY KTPPIKYFG GFNFSQILPD PSKPSKRSFI EDLLFNKVTL ADAGFIKQYG DCLGDIAARD LICAQKFKGL TVLPPLLTDE MIAQYTSALL AGTITSGWT FGAGAALQIP FAMQMAYRFN GIGVTQNVLY ENQKLIANQF NSAIGKIQDS LSSTASALGK LQDVVNHNAQ A LNTLVKQL SSKFGAISSV LNDIFSRLDP PEAEVQIDRL ITGRLQSLQT YVTQQLIRAA EIRASANLAA TKMSECVLGQ SK RVDFCGK GYHLMSFPQS APHGVVFLHV TYVPAQEKNF TTAPAICHDG KAHFPREGVF VSNGTHWFVT QRNFYEPQII TTD NTFVSG NCDVVIGIVN NTVYDPLQPE LDSFKEELDK YFKNHTSPDV DLGDISGINA SVVNIQKEID RLNEVAKNLN ESLI DLQEL GKYEQLVPRG SGYIPEAPRD GQAYVRKDGE WVLLSTFLHH HHHH |
-Macromolecule #3: 2-acetamido-2-deoxy-beta-D-glucopyranose
Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 3 / Number of copies: 21 / 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
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: 60.0 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
Startup model | Type of model: PDB ENTRY PDB model - PDB ID: |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.0 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 98093 |
Initial angle assignment | Type: OTHER |
Final angle assignment | Type: OTHER |