+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-25887 | |||||||||
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Title | Omicron spike at 3.0 A (open form) | |||||||||
Map data | Omicron spike 1RBD-up (unsharpened map) | |||||||||
Sample |
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Function / homology | Function and homology information 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 / membrane fusion / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / receptor ligand activity / 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 / membrane / identical protein binding / plasma membrane Similarity search - Function | |||||||||
Biological species | Severe acute respiratory syndrome coronavirus 2 | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.0 Å | |||||||||
Authors | Ye G / Liu B / Li F | |||||||||
Funding support | United States, 2 items
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Citation | Journal: Nat Commun / Year: 2022 Title: Cryo-EM structure of a SARS-CoV-2 omicron spike protein ectodomain. Authors: Gang Ye / Bin Liu / Fang Li / Abstract: The omicron variant of SARS-CoV-2 has been spreading rapidly across the globe. The virus-surface spike protein plays a critical role in the cell entry and immune evasion of SARS-CoV-2. Here we ...The omicron variant of SARS-CoV-2 has been spreading rapidly across the globe. The virus-surface spike protein plays a critical role in the cell entry and immune evasion of SARS-CoV-2. Here we determined the 3.0 Å cryo-EM structure of the omicron spike protein ectodomain. In contrast to the original strain of SARS-CoV-2 where the receptor-binding domain (RBD) of the spike protein takes a mixture of open ("standing up") and closed ("lying down") conformations, the omicron spike molecules are predominantly in the open conformation, with one upright RBD ready for receptor binding. The open conformation of the omicron spike is stabilized by enhanced inter-domain and inter-subunit packing, which involves new mutations in the omicron strain. Moreover, the omicron spike has undergone extensive mutations in RBD regions where known neutralizing antibodies target, allowing the omicron variant to escape immune surveillance aimed at the original viral strain. The stable open conformation of the omicron spike sheds light on the cell entry and immune evasion mechanisms of the omicron variant. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_25887.map.gz | 107.3 MB | EMDB map data format | |
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Header (meta data) | emd-25887-v30.xml emd-25887.xml | 17.9 KB 17.9 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_25887_fsc.xml | 12.7 KB | Display | FSC data file |
Images | emd_25887.png | 66 KB | ||
Others | emd_25887_additional_1.map.gz | 204 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-25887 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-25887 | HTTPS FTP |
-Related structure data
Related structure data | 7tgwMC 7tgxC 7tgyC C: citing same article (ref.) M: atomic model generated by this map |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_25887.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Omicron spike 1RBD-up (unsharpened map) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.89 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Additional map: Omicron spike 1RBD-up (sharpened map)
File | emd_25887_additional_1.map | ||||||||||||
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Annotation | Omicron spike 1RBD-up (sharpened map) | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
-Entire : SARS-CoV-2 omicron spike
Entire | Name: SARS-CoV-2 omicron spike |
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Components |
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-Supramolecule #1: SARS-CoV-2 omicron spike
Supramolecule | Name: SARS-CoV-2 omicron spike / type: complex / Chimera: Yes / ID: 1 / Parent: 0 / Macromolecule list: #1 |
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Source (natural) | Organism: Severe acute respiratory syndrome coronavirus 2 / Strain: Omicron |
Recombinant expression | Organism: Homo sapiens (human) |
Molecular weight | Experimental: 456 KDa |
-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: Severe acute respiratory syndrome coronavirus 2 / Strain: Omicron |
Molecular weight | Theoretical: 137.205391 KDa |
Recombinant expression | Organism: Homo sapiens (human) |
Sequence | String: QCVNLTTRTQ LPPAYTNSFT RGVYYPDKVF RSSVLHSTQD LFLPFFSNVT WFHVISGTNG TKRFDNPVLP FNDGVYFASI EKSNIIRGW IFGTTLDSKT QSLLIVNNAT NVVIKVCEFQ FCNDPFLDHK NNKSWMESEF RVYSSANNCT FEYVSQPFLM D LEGKQGNF ...String: QCVNLTTRTQ LPPAYTNSFT RGVYYPDKVF RSSVLHSTQD LFLPFFSNVT WFHVISGTNG TKRFDNPVLP FNDGVYFASI EKSNIIRGW IFGTTLDSKT QSLLIVNNAT NVVIKVCEFQ FCNDPFLDHK NNKSWMESEF RVYSSANNCT FEYVSQPFLM D LEGKQGNF KNLREFVFKN IDGYFKIYSK HTPIIVREPE DLPQGFSALE PLVDLPIGIN ITRFQTLLAL HRSYLTPGDS SS GWTAGAA AYYVGYLQPR TFLLKYNENG TITDAVDCAL DPLSETKCTL KSFTVEKGIY QTSNFRVQPT ESIVRFPNIT NLC PFDEVF NATRFASVYA WNRKRISNCV ADYSVLYNLA PFFTFKCYGV SPTKLNDLCF TNVYADSFVI RGDEVRQIAP GQTG NIADY NYKLPDDFTG CVIAWNSNKL DSKVSGNYNY LYRLFRKSNL KPFERDISTE IYQAGNKPCN GVAGFNCYFP LRSYG FRPT YGVGHQPYRV VVLSFELLHA PATVCGPKKS TNLVKNKCVN FNFNGLKGTG VLTESNKKFL PFQQFGRDIA DTTDAV RDP QTLEILDITP CSFGGVSVIT PGTNTSNQVA VLYQGVNCTE VPVAIHADQL TPTWRVYSTG SNVFQTRAGC LIGAEYV NN SYECDIPIGA GICASYQTQT KSHRRARSVA SQSIIAYTMS LGAENSVAYS NNSIAIPTNF TISVTTEILP VSMTKTSV D CTMYICGDST ECSNLLLQYG SFCTQLKRAL TGIAVEQDKN TQEVFAQVKQ IYKTPPIKYF GGFNFSQILP DPSKPSKRS PIEDLLFNKV TLADAGFIKQ YGDCLGDIAA RDLICAQKFK GLTVLPPLLT DEMIAQYTSA LLAGTITSGW TFGAGPALQI PFPMQMAYR FNGIGVTQNV LYENQKLIAN QFNSAIGKIQ DSLSSTPSAL GKLQDVVNHN AQALNTLVKQ LSSKFGAISS V LNDIFSRL DPPEAEVQID RLITGRLQSL QTYVTQQLIR AAEIRASANL AATKMSECVL GQSKRVDFCG KGYHLMSFPQ SA PHGVVFL HVTYVPAQEK NFTTAPAICH DGKAHFPREG VFVSNGTHWF VTQRNFYEPQ IITTDNTFVS GNCDVVIGIV NNT VYDPLQ PELDSFKEEL DKYFKNHTSP DVDLGDISGI NASVVNIQKE IDRLNEVAKN LNESLIDLQE LGKYEQYIKG SGYI PEAPR DGQAYVRKDG EWVLLSTFLG HHHHHH |
-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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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 1 mg/mL |
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Buffer | pH: 7.5 |
Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Atmosphere: NITROGEN / Details: 15 mV |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 295 K / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 100.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / Nominal defocus max: 2.4 µm / Nominal defocus min: 1.0 µm / Nominal magnification: 96000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Temperature | Min: 70.0 K / Max: 70.0 K |
Image recording | Film or detector model: FEI FALCON III (4k x 4k) / Detector mode: COUNTING / Digitization - Dimensions - Width: 4096 pixel / Digitization - Dimensions - Height: 4096 pixel / Number grids imaged: 1 / Number real images: 3711 / Average electron dose: 40.0 e/Å2 |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |