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- EMDB-10863: Structure of the SARS-CoV-2 spike S1 protein in complex with CR30... -

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Basic information

Entry
Database: EMDB / ID: EMD-10863
TitleStructure of the SARS-CoV-2 spike S1 protein in complex with CR3022 Fab
Map dataThe map has strongly anisotropic resolution. RBD and CR3022 Fab are fitted. The S1 N-terminal domains are not well defined and can be viewed at lower contour level, 0.345
Sample
  • Complex: Binary complex of SARS-CoV-2 spike S1 with CR3022 Fab
    • Complex: RBD
      • Protein or peptide: Spike glycoprotein
    • Complex: Immunoblobulin heavy chain
      • Protein or peptide: IgG H chain
    • Complex: Immunoblobulin light chain
      • Protein or peptide: IgG L chain
KeywordsSARS-CoV-2 Spike protein / RBD / CR3022 / complex / VIRAL PROTEIN
Function / homology
Function and homology information


symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / viral translation / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion ...symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / viral translation / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / membrane fusion / entry receptor-mediated virion attachment to host cell / Attachment and Entry / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / receptor ligand activity / endocytosis involved in viral entry into host cell / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / symbiont entry into host cell / 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, N-terminal domain superfamily / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus / Spike glycoprotein, betacoronavirus / 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 (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, N-terminal domain superfamily / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus / Spike glycoprotein, betacoronavirus / 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 / Betacoronavirus spike glycoprotein S1, receptor binding / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Betacoronavirus-like spike glycoprotein S1, N-terminal / Spike glycoprotein S2 superfamily, coronavirus / 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, coronavirus / Coronavirus spike glycoprotein S2
Similarity search - Domain/homology
Biological speciesSevere acute respiratory syndrome coronavirus 2 / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsHuo J / Zhao Y
Funding support United Kingdom, 2 items
OrganizationGrant numberCountry
Medical Research Council (MRC, United Kingdom)MR/N00065X/1 United Kingdom
Wellcome Trust101122/Z/13/Z United Kingdom
CitationJournal: Cell Host Microbe / Year: 2020
Title: Neutralization of SARS-CoV-2 by Destruction of the Prefusion Spike.
Authors: Jiandong Huo / Yuguang Zhao / Jingshan Ren / Daming Zhou / Helen M E Duyvesteyn / Helen M Ginn / Loic Carrique / Tomas Malinauskas / Reinis R Ruza / Pranav N M Shah / Tiong Kit Tan / Pramila ...Authors: Jiandong Huo / Yuguang Zhao / Jingshan Ren / Daming Zhou / Helen M E Duyvesteyn / Helen M Ginn / Loic Carrique / Tomas Malinauskas / Reinis R Ruza / Pranav N M Shah / Tiong Kit Tan / Pramila Rijal / Naomi Coombes / Kevin R Bewley / Julia A Tree / Julika Radecke / Neil G Paterson / Piyada Supasa / Juthathip Mongkolsapaya / Gavin R Screaton / Miles Carroll / Alain Townsend / Elizabeth E Fry / Raymond J Owens / David I Stuart /
Abstract: There are as yet no licensed therapeutics for the COVID-19 pandemic. The causal coronavirus (SARS-CoV-2) binds host cells via a trimeric spike whose receptor binding domain (RBD) recognizes ...There are as yet no licensed therapeutics for the COVID-19 pandemic. The causal coronavirus (SARS-CoV-2) binds host cells via a trimeric spike whose receptor binding domain (RBD) recognizes angiotensin-converting enzyme 2, initiating conformational changes that drive membrane fusion. We find that the monoclonal antibody CR3022 binds the RBD tightly, neutralizing SARS-CoV-2, and report the crystal structure at 2.4 Å of the Fab/RBD complex. Some crystals are suitable for screening for entry-blocking inhibitors. The highly conserved, structure-stabilizing CR3022 epitope is inaccessible in the prefusion spike, suggesting that CR3022 binding facilitates conversion to the fusion-incompetent post-fusion state. Cryogenic electron microscopy (cryo-EM) analysis confirms that incubation of spike with CR3022 Fab leads to destruction of the prefusion trimer. Presentation of this cryptic epitope in an RBD-based vaccine might advantageously focus immune responses. Binders at this epitope could be useful therapeutically, possibly in synergy with an antibody that blocks receptor attachment.
History
DepositionApr 15, 2020-
Header (metadata) releaseApr 29, 2020-
Map releaseApr 29, 2020-
UpdateJul 2, 2025-
Current statusJul 2, 2025Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.4
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.4
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6yor
  • Surface level: 0.4
  • Imaged by UCSF Chimera
  • Download
  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-6yor
  • Imaged by Jmol
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_10863.png

Downloads & links

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Map

FileDownload / File: emd_10863.map.gz / Format: CCP4 / Size: 600.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationThe map has strongly anisotropic resolution. RBD and CR3022 Fab are fitted. The S1 N-terminal domains are not well defined and can be viewed at lower contour level, 0.345
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 540 pix.
= 448.2 Å		0.83 Å/pix.
x 540 pix.
= 448.2 Å		0.83 Å/pix.
x 540 pix.
= 448.2 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.83 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.486 / Movie #1: 0.4
Minimum - Maximum-2.0657659 - 3.0164948
Average (Standard dev.)0.0012673322 (±0.02615307)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions540540540
Spacing540540540
CellA=B=C: 448.19998 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.830.830.83
M x/y/z540540540
origin x/y/z0.0000.0000.000
length x/y/z448.200448.200448.200
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS540540540
D min/max/mean-2.0663.0160.001

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Supplemental data

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Sample components

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Entire : Binary complex of SARS-CoV-2 spike S1 with CR3022 Fab

EntireName: Binary complex of SARS-CoV-2 spike S1 with CR3022 Fab
Components
  • Complex: Binary complex of SARS-CoV-2 spike S1 with CR3022 Fab
    • Complex: RBD
      • Protein or peptide: Spike glycoprotein
    • Complex: Immunoblobulin heavy chain
      • Protein or peptide: IgG H chain
    • Complex: Immunoblobulin light chain
      • Protein or peptide: IgG L chain

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Supramolecule #1: Binary complex of SARS-CoV-2 spike S1 with CR3022 Fab

SupramoleculeName: Binary complex of SARS-CoV-2 spike S1 with CR3022 Fab / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all

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Supramolecule #2: RBD

SupramoleculeName: RBD / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2

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Supramolecule #3: Immunoblobulin heavy chain

SupramoleculeName: Immunoblobulin heavy chain / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2
Source (natural)Organism: Homo sapiens (human)

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Supramolecule #4: Immunoblobulin light chain

SupramoleculeName: Immunoblobulin light chain / type: complex / ID: 4 / Parent: 1 / Macromolecule list: #3
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Spike glycoprotein

MacromoleculeName: Spike glycoprotein / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Molecular weightTheoretical: 22.758518 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: PNITNLCPFG EVFNATRFAS VYAWNRKRIS NCVADYSVLY NSASFSTFKC YGVSPTKLND LCFTNVYADS FVIRGDEVRQ IAPGQTGKI ADYNYKLPDD FTGCVIAWNS NNLDSKVGGN YNYLYRLFRK SNLKPFERDI STEIYQAGST PCNGVEGFNC Y FPLQSYGF ...String:
PNITNLCPFG EVFNATRFAS VYAWNRKRIS NCVADYSVLY NSASFSTFKC YGVSPTKLND LCFTNVYADS FVIRGDEVRQ IAPGQTGKI ADYNYKLPDD FTGCVIAWNS NNLDSKVGGN YNYLYRLFRK SNLKPFERDI STEIYQAGST PCNGVEGFNC Y FPLQSYGF QPTNGVGYQP YRVVVLSFEL LHAPATVCGP KKSTN

UniProtKB: Spike glycoprotein

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Macromolecule #2: IgG H chain

MacromoleculeName: IgG H chain / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 24.45552 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: TQMQLVQSGT EVKKPGESLK ISCKGSGYGF ITYWIGWVRQ MPGKGLEWMG IIYPGDSETR YSPSFQGQVT ISADKSINTA YLQWSSLKA SDTAIYYCAG GSGISTPMDV WGQGTTVTVA STKGPSVFPL APSSKSTSGG TAALGCLVKD YFPEPVTVSW N SGALTSGV ...String:
TQMQLVQSGT EVKKPGESLK ISCKGSGYGF ITYWIGWVRQ MPGKGLEWMG IIYPGDSETR YSPSFQGQVT ISADKSINTA YLQWSSLKA SDTAIYYCAG GSGISTPMDV WGQGTTVTVA STKGPSVFPL APSSKSTSGG TAALGCLVKD YFPEPVTVSW N SGALTSGV HTFPAVLQSS GLYSLSSVVT VPSSSLGTQT YICNVNHKPS NTKVDKKVEP KSCDKHHHHH H

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Macromolecule #3: IgG L chain

MacromoleculeName: IgG L chain / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 24.289885 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: DIQLTQSPDS LAVSLGERAT INCKSSQSVL YSSINKNYLA WYQQKPGQPP KLLIYWASTR ESGVPDRFSG SGSGTDFTLT ISSLQAEDV AVYYCQQYYS TPYTFGQGTK VEIKRTVAAP SVFIFPPSDE QLKSGTASVV CLLNNFYPRE AKVQWKVDNA L QSGNSQES ...String:
DIQLTQSPDS LAVSLGERAT INCKSSQSVL YSSINKNYLA WYQQKPGQPP KLLIYWASTR ESGVPDRFSG SGSGTDFTLT ISSLQAEDV AVYYCQQYYS TPYTFGQGTK VEIKRTVAAP SVFIFPPSDE QLKSGTASVV CLLNNFYPRE AKVQWKVDNA L QSGNSQES VTEQDSKDST YSLSSTLTLS KADYEKHKVY ACEVTHQGLS SPVTKSFNRG EC

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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

BufferpH: 8 / Details: 2 mM Tris pH 8.0, 200 mM NaCl, 0.02 % NaN3
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Number grids imaged: 1 / Number real images: 13307 / Average exposure time: 1.4 sec. / Average electron dose: 42.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing #1

Image processing ID1
Particle selectionNumber selected: 4852523
Details: Initial from template generated with subset of data.
CTF correctionSoftware - Name: Gctf (ver. 1.06) / Details: Default settings in Gctf. / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

6vsb

Final reconstructionNumber classes used: 1 / Applied symmetry - Point group: C1 (asymmetric) / Algorithm: BACK PROJECTION / Resolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.1) / Number images used: 327945
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 2.14.1-live)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Version: 2.14.1-live
Final 3D classificationSoftware - Name: cryoSPARC (ver. 2.14.1-live)

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Image processing #2

Image processing ID2
Particle selectionNumber selected: 4852523
CTF correctionSoftware - Name: Gctf / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: OTHER / Details: RBD-CR3022 map in this deposition.
Final reconstructionNumber classes used: 1 / Applied symmetry - Point group: C1 (asymmetric) / Algorithm: BACK PROJECTION / Resolution.type: BY AUTHOR / Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 2.14.1-live) / Number images used: 100295
Initial angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: cryoSPARC (ver. 2.14.1-live)
Final angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: cryoSPARC (ver. 2.14.1-live)
Final 3D classificationSoftware - Name: cryoSPARC (ver. 2.14.1-live)

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