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- PDB-7jmw: Crystal structure of SARS-CoV-2 spike protein receptor-binding do... -

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Basic information

Entry
Database: PDB / ID: 7jmw
TitleCrystal structure of SARS-CoV-2 spike protein receptor-binding domain in complex with cross-neutralizing antibody COVA1-16 Fab
Components
  • COVA1-16 heavy chain
  • COVA1-16 light chain
  • Spike protein S1
KeywordsVIRAL PROTEIN/IMMUNE SYSTEM / SARS-CoV-2 / Antibody / Spike / Coronavirus / COVID-19 / IMMUNE SYSTEM / 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 / symbiont-mediated-mediated suppression 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 / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell / membrane fusion / 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 / 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 / Betacoronavirus spike glycoprotein S1, receptor binding / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Betacoronavirus-like spike glycoprotein S1, N-terminal / 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 / Immunoglobulins / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
Biological speciesSevere acute respiratory syndrome coronavirus 2
Homo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.89 Å
AuthorsLiu, H. / Yuan, M. / Zhu, X. / Wu, N.C. / Wilson, I.A.
Funding support United States, 2items
OrganizationGrant numberCountry
Bill & Melinda Gates FoundationOPP1170236 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI139445 United States
Citation
Journal: Immunity / Year: 2020
Title: Cross-Neutralization of a SARS-CoV-2 Antibody to a Functionally Conserved Site Is Mediated by Avidity.
Authors: Hejun Liu / Nicholas C Wu / Meng Yuan / Sandhya Bangaru / Jonathan L Torres / Tom G Caniels / Jelle van Schooten / Xueyong Zhu / Chang-Chun D Lee / Philip J M Brouwer / Marit J van Gils / ...Authors: Hejun Liu / Nicholas C Wu / Meng Yuan / Sandhya Bangaru / Jonathan L Torres / Tom G Caniels / Jelle van Schooten / Xueyong Zhu / Chang-Chun D Lee / Philip J M Brouwer / Marit J van Gils / Rogier W Sanders / Andrew B Ward / Ian A Wilson /
Abstract: Most antibodies isolated from individuals with coronavirus disease 2019 (COVID-19) are specific to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). However, COVA1-16 is a relatively rare ...Most antibodies isolated from individuals with coronavirus disease 2019 (COVID-19) are specific to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). However, COVA1-16 is a relatively rare antibody that also cross-neutralizes SARS-CoV. Here, we determined a crystal structure of the COVA1-16 antibody fragment (Fab) with the SARS-CoV-2 receptor-binding domain (RBD) and negative-stain electron microscopy reconstructions with the spike glycoprotein trimer to elucidate the structural basis of its cross-reactivity. COVA1-16 binds a highly conserved epitope on the SARS-CoV-2 RBD, mainly through a long complementarity-determining region (CDR) H3, and competes with the angiotensin-converting enzyme 2 (ACE2) receptor because of steric hindrance rather than epitope overlap. COVA1-16 binds to a flexible up conformation of the RBD on the spike and relies on antibody avidity for neutralization. These findings, along with the structural and functional rationale for epitope conservation, provide insights for development of more universal SARS-like coronavirus vaccines and therapies.
#1: Journal: Biorxiv / Year: 2020
Title: Cross-neutralization of a SARS-CoV-2 antibody to a functionally conserved site is mediated by avidity.
Authors: Liu, H. / Wu, N.C. / Yuan, M. / Bangaru, S. / Torres, J.L. / Caniels, T.G. / van Schooten, J. / Zhu, X. / Lee, C.D. / Brouwer, P.J.M. / van Gils, M.J. / Sanders, R.W. / Ward, A.B. / Wilson, I.A.
#2: Journal: Immunity / Year: 2020
Title: Cross-Neutralization of a SARS-CoV-2 Antibody to a Functionally Conserved Site Is Mediated by Avidity.
Authors: Hejun Liu / Nicholas C Wu / Meng Yuan / Sandhya Bangaru / Jonathan L Torres / Tom G Caniels / Jelle van Schooten / Xueyong Zhu / Chang-Chun D Lee / Philip J M Brouwer / Marit J van Gils / ...Authors: Hejun Liu / Nicholas C Wu / Meng Yuan / Sandhya Bangaru / Jonathan L Torres / Tom G Caniels / Jelle van Schooten / Xueyong Zhu / Chang-Chun D Lee / Philip J M Brouwer / Marit J van Gils / Rogier W Sanders / Andrew B Ward / Ian A Wilson /
Abstract: Most antibodies isolated from individuals with coronavirus disease 2019 (COVID-19) are specific to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). However, COVA1-16 is a relatively rare ...Most antibodies isolated from individuals with coronavirus disease 2019 (COVID-19) are specific to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). However, COVA1-16 is a relatively rare antibody that also cross-neutralizes SARS-CoV. Here, we determined a crystal structure of the COVA1-16 antibody fragment (Fab) with the SARS-CoV-2 receptor-binding domain (RBD) and negative-stain electron microscopy reconstructions with the spike glycoprotein trimer to elucidate the structural basis of its cross-reactivity. COVA1-16 binds a highly conserved epitope on the SARS-CoV-2 RBD, mainly through a long complementarity-determining region (CDR) H3, and competes with the angiotensin-converting enzyme 2 (ACE2) receptor because of steric hindrance rather than epitope overlap. COVA1-16 binds to a flexible up conformation of the RBD on the spike and relies on antibody avidity for neutralization. These findings, along with the structural and functional rationale for epitope conservation, provide insights for development of more universal SARS-like coronavirus vaccines and therapies.
History
DepositionAug 3, 2020Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 14, 2020Provider: repository / Type: Initial release
Revision 1.1Dec 16, 2020Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 1.2Dec 30, 2020Group: Database references / Category: citation / citation_author
Revision 1.3Feb 9, 2022Group: Database references / Category: citation / citation_author / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 1.4Oct 18, 2023Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / citation / pdbx_initial_refinement_model
Item: _citation.journal_id_ISSN
Revision 1.5Oct 23, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature / Item: _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Spike protein S1
H: COVA1-16 heavy chain
L: COVA1-16 light chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)75,8644
Polymers75,4403
Non-polymers4241
Water00
1
A: Spike protein S1
hetero molecules

H: COVA1-16 heavy chain
L: COVA1-16 light chain


Theoretical massNumber of molelcules
Total (without water)75,8644
Polymers75,4403
Non-polymers4241
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation1_655x+1,y,z1
Buried area3820 Å2
ΔGint-17 kcal/mol
Surface area30240 Å2
MethodPISA
Unit cell
Length a, b, c (Å)57.403, 124.905, 57.614
Angle α, β, γ (deg.)90.000, 96.101, 90.000
Int Tables number4
Space group name H-MP1211
Space group name HallP2yb
Symmetry operation#1: x,y,z
#2: -x,y+1/2,-z

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Components

#1: Protein Spike protein S1


Mass: 26095.348 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus 2
Gene: S, 2 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P0DTC2
#2: Antibody COVA1-16 heavy chain


Mass: 25928.943 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Mus musculus (house mouse)
#3: Antibody COVA1-16 light chain


Mass: 23415.799 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Mus musculus (house mouse)
#4: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.72 Å3/Da / Density % sol: 54.82 %
Crystal growTemperature: 293.15 K / Method: vapor diffusion, sitting drop / pH: 6.9 / Details: 20% PEG 3350, 0.2 M Na-iodide, pH 6.9

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL12-1 / Wavelength: 0.9795 Å
DetectorType: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Jun 10, 2020
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9795 Å / Relative weight: 1
ReflectionResolution: 2.89→50 Å / Num. obs: 17656 / % possible obs: 97.9 % / Redundancy: 3.7 % / Biso Wilson estimate: 42.71 Å2 / CC1/2: 0.963 / Rpim(I) all: 0.09 / Rsym value: 0.153 / Net I/σ(I): 7.4
Reflection shellResolution: 2.89→2.95 Å / Mean I/σ(I) obs: 1.2 / Num. unique obs: 845 / CC1/2: 0.668 / Rpim(I) all: 0.429 / Rsym value: 0.691

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Processing

Software
NameVersionClassification
REFMAC5.8.0258refinement
PHENIX1.16_3549refinement
HKL-2000data reduction
HKL-2000data scaling
PHASER2.8.3phasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 6XC4,4IMK,2Q20

6xc4

4imk

2q20


Resolution: 2.89→42.77 Å / SU ML: 0.4316 / Cross valid method: FREE R-VALUE / σ(F): 1.35 / Phase error: 30.5748
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
RfactorNum. reflection% reflection
Rfree0.2908 948 5.38 %
Rwork0.2379 16684 -
obs0.2407 17632 97.43 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso mean: 47.36 Å2
Refinement stepCycle: LAST / Resolution: 2.89→42.77 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4845 0 28 0 4873
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.00324997
X-RAY DIFFRACTIONf_angle_d0.67726811
X-RAY DIFFRACTIONf_chiral_restr0.0463752
X-RAY DIFFRACTIONf_plane_restr0.0046884
X-RAY DIFFRACTIONf_dihedral_angle_d8.35982932
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
2.89-3.040.40691340.34392303X-RAY DIFFRACTION93.84
3.04-3.240.3741470.30882378X-RAY DIFFRACTION99.29
3.24-3.480.38371240.28092421X-RAY DIFFRACTION98.83
3.48-3.840.29361470.24372396X-RAY DIFFRACTION97.81
3.84-4.390.25711450.21582292X-RAY DIFFRACTION95.01
4.39-5.530.21761280.18552438X-RAY DIFFRACTION99.5
5.53-42.770.24321230.21082456X-RAY DIFFRACTION97.76
Refinement TLS params.Method: refined / Origin x: 32.6080084968 Å / Origin y: -24.9837704453 Å / Origin z: 36.0594463637 Å
111213212223313233
T0.214786587051 Å2-0.0135792487966 Å20.0451746390434 Å2-0.249682092207 Å2-0.0149511558925 Å2--0.190897084349 Å2
L1.18378408502 °2-0.8917676739 °20.799448836275 °2-2.09716116091 °2-0.855910033547 °2--0.746241807055 °2
S-0.0618338377179 Å °-0.00603823682263 Å °-0.0210872369265 Å °0.238075470953 Å °0.051558372584 Å °-0.136428441125 Å °-0.0736445443033 Å °-0.00866351442939 Å °0.0334929928762 Å °
Refinement TLS groupSelection details: all

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