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- EMDB-32078: Cryo-EM structure of the SARS-CoV-2 spike protein (2-up RBD) boun... -

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Entry
Database: EMDB / ID: EMD-32078
TitleCryo-EM structure of the SARS-CoV-2 spike protein (2-up RBD) bound to neutralizing nanobodies P86
Map data
Sample
  • Complex: SARS-CoV-2 spike protein (2-up RBD) bound to neutralizing nanobodies P86
    • Complex: SARS-CoV-2 spike protein (2-up RBD)
      • Protein or peptide: Spike glycoprotein
    • Complex: neutralizing nanobodies P86
      • Protein or peptide: Neutralizing nanobody P86
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
Keywordsspike / nanobody / VHH / VIRAL PROTEIN / VIRAL PROTEIN-IMMUNE SYSTEM complex
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 / 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 / membrane fusion / receptor-mediated endocytosis of virus by host cell / Attachment and Entry / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / receptor ligand activity / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / 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
Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal / Spike glycoprotein, betacoronavirus / Spike glycoprotein, N-terminal domain superfamily / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus ...Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal / Spike glycoprotein, betacoronavirus / Spike glycoprotein, N-terminal domain superfamily / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Betacoronavirus-like spike glycoprotein S1, N-terminal / Betacoronavirus spike glycoprotein S1, receptor binding / Spike glycoprotein S2, coronavirus, heptad repeat 1 / Spike glycoprotein S2, coronavirus, heptad repeat 2 / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 1 (HR1) region profile. / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 2 (HR2) region profile. / Spike glycoprotein S2 superfamily, coronavirus / Spike glycoprotein S2, coronavirus / Coronavirus spike glycoprotein S2
Similarity search - Domain/homology
Biological speciesSevere acute respiratory syndrome coronavirus 2 / Vicugna pacos (alpaca)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.03 Å
AuthorsMaeda R / Fujita J
Funding support Japan, 8 items
OrganizationGrant numberCountry
Japan Agency for Medical Research and Development (AMED)JP20fk0108268 Japan
Japan Agency for Medical Research and Development (AMED)JP20fk018517 Japan
Japan Agency for Medical Research and Development (AMED)JP20fk018413 Japan
Japan Society for the Promotion of Science (JSPS)JP20K22630 Japan
Japan Society for the Promotion of Science (JSPS)JP25000013 Japan
Japan Agency for Medical Research and Development (AMED)JP21am0101117 Japan
Japan Agency for Medical Research and Development (AMED)JP17pc0101020 Japan
Japan Science and TechnologyJPMJOP1861 Japan
CitationJournal: Commun Biol / Year: 2022
Title: A panel of nanobodies recognizing conserved hidden clefts of all SARS-CoV-2 spike variants including Omicron.
Authors: Ryota Maeda / Junso Fujita / Yoshinobu Konishi / Yasuhiro Kazuma / Hiroyuki Yamazaki / Itsuki Anzai / Tokiko Watanabe / Keishi Yamaguchi / Kazuki Kasai / Kayoko Nagata / Yutaro Yamaoka / Kei ...Authors: Ryota Maeda / Junso Fujita / Yoshinobu Konishi / Yasuhiro Kazuma / Hiroyuki Yamazaki / Itsuki Anzai / Tokiko Watanabe / Keishi Yamaguchi / Kazuki Kasai / Kayoko Nagata / Yutaro Yamaoka / Kei Miyakawa / Akihide Ryo / Kotaro Shirakawa / Kei Sato / Fumiaki Makino / Yoshiharu Matsuura / Tsuyoshi Inoue / Akihiro Imura / Keiichi Namba / Akifumi Takaori-Kondo /
Abstract: We are amid the historic coronavirus infectious disease 2019 (COVID-19) pandemic. Imbalances in the accessibility of vaccines, medicines, and diagnostics among countries, regions, and populations, ...We are amid the historic coronavirus infectious disease 2019 (COVID-19) pandemic. Imbalances in the accessibility of vaccines, medicines, and diagnostics among countries, regions, and populations, and those in war crises, have been problematic. Nanobodies are small, stable, customizable, and inexpensive to produce. Herein, we present a panel of nanobodies that can detect the spike proteins of five SARS-CoV-2 variants of concern (VOCs) including Omicron. Here we show via ELISA, lateral flow, kinetic, flow cytometric, microscopy, and Western blotting assays that our nanobodies can quantify the spike variants. This panel of nanobodies broadly neutralizes viral infection caused by pseudotyped and authentic SARS-CoV-2 VOCs. Structural analyses show that the P86 clone targets epitopes that are conserved yet unclassified on the receptor-binding domain (RBD) and contacts the N-terminal domain (NTD). Human antibodies rarely access both regions; consequently, the clone buries hidden crevasses of SARS-CoV-2 spike proteins that go undetected by conventional antibodies.
History
DepositionOct 18, 2021-
Header (metadata) releaseJul 20, 2022-
Map releaseJul 20, 2022-
UpdateOct 23, 2024-
Current statusOct 23, 2024Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_32078.png

Downloads & links

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Map

FileDownload / File: emd_32078.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
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AxesZ (Sec.)Y (Row.)X (Col.)
0.87 Å/pix.
x 360 pix.
= 313.2 Å		0.87 Å/pix.
x 360 pix.
= 313.2 Å		0.87 Å/pix.
x 360 pix.
= 313.2 Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.87 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.187
Minimum - Maximum-1.5468138 - 2.5854597
Average (Standard dev.)0.00036199298 (±0.067378394)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions360360360
Spacing360360360
CellA=B=C: 313.2 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_32078_msk_1.map
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Additional map: Sharpened map from local refinement

Fileemd_32078_additional_1.map
AnnotationSharpened map from local refinement
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Half map: #2

Fileemd_32078_half_map_1.map
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Half map: #1

Fileemd_32078_half_map_2.map
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Sample components

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Entire : SARS-CoV-2 spike protein (2-up RBD) bound to neutralizing nanobod...

EntireName: SARS-CoV-2 spike protein (2-up RBD) bound to neutralizing nanobodies P86
Components
  • Complex: SARS-CoV-2 spike protein (2-up RBD) bound to neutralizing nanobodies P86
    • Complex: SARS-CoV-2 spike protein (2-up RBD)
      • Protein or peptide: Spike glycoprotein
    • Complex: neutralizing nanobodies P86
      • Protein or peptide: Neutralizing nanobody P86
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: SARS-CoV-2 spike protein (2-up RBD) bound to neutralizing nanobod...

SupramoleculeName: SARS-CoV-2 spike protein (2-up RBD) bound to neutralizing nanobodies P86
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2

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Supramolecule #2: SARS-CoV-2 spike protein (2-up RBD)

SupramoleculeName: SARS-CoV-2 spike protein (2-up RBD) / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1
Source (natural)Organism: Vicugna pacos (alpaca)

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Supramolecule #3: neutralizing nanobodies P86

SupramoleculeName: neutralizing nanobodies P86 / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2

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Macromolecule #1: Spike glycoprotein

MacromoleculeName: Spike glycoprotein / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Molecular weightTheoretical: 138.154984 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MFVFLVLLPL VSSQCVNLTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIHV SGTNGTKRFD NPVLPFNDG VYFASTEKSN IIRGWIFGTT LDSKTQSLLI VNNATNVVIK VCEFQFCNDP FLGVYYHKNN KSWMESEFRV Y SSANNCTF ...String:
MFVFLVLLPL VSSQCVNLTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIHV SGTNGTKRFD NPVLPFNDG VYFASTEKSN IIRGWIFGTT LDSKTQSLLI VNNATNVVIK VCEFQFCNDP FLGVYYHKNN KSWMESEFRV Y SSANNCTF EYVSQPFLMD LEGKQGNFKN LREFVFKNID GYFKIYSKHT PINLVRDLPQ GFSALEPLVD LPIGINITRF QT LLALHRS YLTPGDSSSG WTAGAAAYYV GYLQPRTFLL KYNENGTITD AVDCALDPLS ETKCTLKSFT VEKGIYQTSN FRV QPTESI VRFPNITNLC PFGEVFNATR FASVYAWNRK RISNCVADYS VLYNSASFST FKCYGVSPTK LNDLCFTNVY ADSF VIRGD EVRQIAPGQT GKIADYNYKL PDDFTGCVIA WNSNNLDSKV GGNYNYLYRL FRKSNLKPFE RDISTEIYQA GSTPC NGVE GFNCYFPLQS YGFQPTNGVG YQPYRVVVLS FELLHAPATV CGPKKSTNLV KNKCVNFNFN GLTGTGVLTE SNKKFL PFQ QFGRDIADTT DAVRDPQTLE ILDITPCSFG GVSVITPGTN TSNQVAVLYQ GVNCTEVPVA IHADQLTPTW RVYSTGS NV FQTRAGCLIG AEHVNNSYEC DIPIGAGICA SYQTQTNSPG SASSVASQSI IAYTMSLGAE NSVAYSNNSI AIPTNFTI S VTTEILPVSM TKTSVDCTMY ICGDSTECSN LLLQYGSFCT QLNRALTGIA VEQDKNTQEV FAQVKQIYKT PPIKDFGGF NFSQILPDPS KPSKRSFIED LLFNKVTLAD AGFIKQYGDC LGDIAARDLI CAQKFNGLTV LPPLLTDEMI AQYTSALLAG TITSGWTFG AGAALQIPFA MQMAYRFNGI GVTQNVLYEN QKLIANQFNS AIGKIQDSLS STASALGKLQ DVVNQNAQAL N TLVKQLSS NFGAISSVLN DILSRLDPPE AEVQIDRLIT GRLQSLQTYV TQQLIRAAEI RASANLAATK MSECVLGQSK RV DFCGKGY HLMSFPQSAP HGVVFLHVTY VPAQEKNFTT APAICHDGKA HFPREGVFVS NGTHWFVTQR NFYEPQIITT DNT FVSGNC DVVIGIVNNT VYDPLQPELD SFKEELDKYF KNHTSPDVDL GDISGINASV VNIQKEIDRL NEVAKNLNES LIDL QELGK YEQGSGYIPE APRDGQAYVR KDGEWVLLST FLGSHHHHHH HH

UniProtKB: Spike glycoprotein

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Macromolecule #2: Neutralizing nanobody P86

MacromoleculeName: Neutralizing nanobody P86 / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Vicugna pacos (alpaca)
Molecular weightTheoretical: 13.432936 KDa
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
SequenceString:
QVQLQESGGG LVQAGGSLRL SCVASGRTFS SLNIVWFRQA PGKERKFVAA INDRNTAYAE SVKGRFTISR DNAKNTVHLQ MNSLKPEDT AVYYCHSADV NGGMDYWGKG TQVTVSSHHH HHH

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Macromolecule #6: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 6 / Number of copies: 30 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration0.1 mg/mL
BufferpH: 7.4 / Component:
ConcentrationFormula
20.0 mMHEPES
150.0 mMNaCl
GridModel: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 200 / Support film - Material: GRAPHENE
Details: The graphene grid was chemically oxidized and modified.
VitrificationCryogen name: ETHANE / Instrument: FEI VITROBOT MARK IV
DetailsMixed with 5 times molar excess of P86.

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Electron microscopy

MicroscopeJEOL CRYO ARM 300
Specialist opticsEnergy filter - Name: In-column Omega Filter / Energy filter - Slit width: 20 eV
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Number grids imaged: 1 / Average exposure time: 3.0 sec. / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.5 µm / Nominal magnification: 60000
Sample stageSpecimen holder model: JEOL CRYOSPECPORTER / Cooling holder cryogen: NITROGEN

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Image processing

Particle selectionNumber selected: 878975
Startup modelType of model: NONE
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 3.03 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 3.2.0) / Number images used: 38004
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.1)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.1)
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial modelPDB ID:

7krr


Chain - Source name: PDB / Chain - Initial model type: experimental model
Output model

PDB-7vq0:
Cryo-EM structure of the SARS-CoV-2 spike protein (2-up RBD) bound to neutralizing nanobodies P86

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