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- PDB-7l02: Cryo-EM structure of SARS-CoV-2 2P S ectodomain bound to one copy... -

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Basic information

Entry
Database: PDB / ID: 7l02
TitleCryo-EM structure of SARS-CoV-2 2P S ectodomain bound to one copy of domain-swapped antibody 2G12
Components
  • 2G12 heavy chain
  • 2G12 light chain
  • Spike glycoproteinPeplomer
KeywordsVIRAL PROTEIN/IMMUNE SYSTEM / Fab-dimerized / glycan-reactive / antibodies / HIV / VIRAL PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


suppression by virus of host tetherin activity / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / receptor-mediated virion attachment to host cell / host cell surface receptor binding / endocytosis involved in viral entry into host cell / fusion of virus membrane with host plasma membrane / suppression by virus of host type I interferon-mediated signaling pathway / viral entry into host cell / fusion of virus membrane with host endosome membrane / viral envelope ...suppression by virus of host tetherin activity / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / receptor-mediated virion attachment to host cell / host cell surface receptor binding / endocytosis involved in viral entry into host cell / fusion of virus membrane with host plasma membrane / suppression by virus of host type I interferon-mediated signaling pathway / viral entry into host cell / fusion of virus membrane with host endosome membrane / viral envelope / pathogenesis / host cell plasma membrane / virion membrane / integral component of membrane / identical protein binding
Coronavirus spike glycoprotein S1, C-terminal / Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus / Betacoronavirus-like spike glycoprotein S1, N-terminal / Betacoronavirus spike glycoprotein S1, receptor binding / Coronavirus spike glycoprotein S1, C-terminal / Spike glycoprotein S2 superfamily, coronavirus / Spike receptor binding domain superfamily, coronavirus / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Spike glycoprotein, heptad repeat 2, coronavirus / Spike glycoprotein S2, coronavirus
Spike glycoprotein / polysac:dglcpnacb1-4dglcpnacb1-roh: / polysac:dmanpa1-3[dmanpa1-6]dmanpb1-4dglcpnacb1-4dglcpnacb1-roh: / polysac:dmanpa1-2dmanpa1-6[dmanpb1-3]dmanpa1-6[dmanpb1-3]dmanpb1-4dglcpnacb1-4dglcpnacb1-roh: / polysac:dmanpa1-3[dmanpb1-6]dmanpb1-4dglcpnacb1-4dglcpnacb1-roh:
Biological speciesSevere acute respiratory syndrome coronavirus 2
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsManne, K. / Henderson, R. / Acharya, P.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI145687 United States
CitationJournal: bioRxiv / Year: 2020
Title: A glycan cluster on the SARS-CoV-2 spike ectodomain is recognized by Fab-dimerized glycan-reactive antibodies.
Authors: Priyamvada Acharya / Wilton Williams / Rory Henderson / Katarzyna Janowska / Kartik Manne / Robert Parks / Margaret Deyton / Jordan Sprenz / Victoria Stalls / Megan Kopp / Katayoun Mansouri ...Authors: Priyamvada Acharya / Wilton Williams / Rory Henderson / Katarzyna Janowska / Kartik Manne / Robert Parks / Margaret Deyton / Jordan Sprenz / Victoria Stalls / Megan Kopp / Katayoun Mansouri / Robert J Edwards / R Ryan Meyerhoff / Thomas Oguin / Gregory Sempowski / Kevin Saunders / Barton F Haynes
Abstract: The COVID-19 pandemic caused by SARS-CoV-2 has escalated into a global crisis. The spike (S) protein that mediates cell entry and membrane fusion is the current focus of vaccine and therapeutic ...The COVID-19 pandemic caused by SARS-CoV-2 has escalated into a global crisis. The spike (S) protein that mediates cell entry and membrane fusion is the current focus of vaccine and therapeutic antibody development efforts. The S protein, like many other viral fusion proteins such as HIV-1 envelope (Env) and influenza hemagglutinin, is glycosylated with both complex and high mannose glycans. Here we demonstrate binding to the SARS-CoV-2 S protein by a category of Fab-dimerized glycan-reactive (FDG) HIV-1-induced broadly neutralizing antibodies (bnAbs). A 3.1 Å resolution cryo-EM structure of the S protein ectodomain bound to glycan-dependent HIV-1 bnAb 2G12 revealed a quaternary glycan epitope on the spike S2 domain involving multiple protomers. These data reveal a new epitope on the SARS-CoV-2 spike that can be targeted for vaccine design.
Highlights: Fab-dimerized, glycan-reactive (FDG) HIV-1 bnAbs cross-react with SARS-CoV-2 spike.3.1 Å resolution cryo-EM structure reveals quaternary S2 epitope for HIV-1 bnAb 2G12.2G12 targets ...Highlights: Fab-dimerized, glycan-reactive (FDG) HIV-1 bnAbs cross-react with SARS-CoV-2 spike.3.1 Å resolution cryo-EM structure reveals quaternary S2 epitope for HIV-1 bnAb 2G12.2G12 targets glycans, at positions 709, 717 and 801, in the SARS-CoV-2 spike.Our studies suggest a common epitope for FDG antibodies centered around glycan 709.
Validation Report
SummaryFull reportAbout validation report
History
DepositionDec 10, 2020Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 30, 2020Provider: repository / Type: Initial release

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Structure visualization

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Assembly

Deposited unit
A: Spike glycoprotein
B: Spike glycoprotein
C: Spike glycoprotein
H: 2G12 heavy chain
K: 2G12 light chain
L: 2G12 light chain
M: 2G12 heavy chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)481,14251
Polymers466,8217
Non-polymers14,32044
Water0
1


TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 1 types, 3 molecules ABC

#1: Protein Spike glycoprotein / Peplomer / S glycoprotein / E2 / Peplomer protein


Mass: 124124.477 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus 2
Gene: S, 2 / Production host: Homo sapiens (human) / References: UniProt: P0DTC2

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Antibody , 2 types, 4 molecules HMKL

#2: Antibody 2G12 heavy chain


Mass: 23978.051 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#3: Antibody 2G12 light chain


Mass: 23245.850 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)

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Sugars , 5 types, 44 molecules

#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.: 10
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam 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
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}LINUCSPDB-CARE
#5: Polysaccharide alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 910.823 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3[DManpa1-6]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/3,5,4/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-3/a4-b1_b4-c1_c3-d1_c6-e1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}[(6+1)][a-D-Manp]{}}}}LINUCSPDB-CARE
#6: Polysaccharide alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[beta-D-mannopyranose-(1-3)]alpha-D- ...alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[beta-D-mannopyranose-(1-3)]alpha-D-mannopyranose-(1-6)-[beta-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 1397.245 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-2DManpa1-6[DManpb1-3]DManpa1-6[DManpb1-3]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/3,8,7/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-2-3-2-3-3/a4-b1_b4-c1_c3-d1_c6-e1_e3-f1_e6-g1_g2-h1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][b-D-Manp]{}[(6+1)][a-D-Manp]{[(3+1)][b-D-Manp]{}[(6+1)][a-D-Manp]{[(2+1)][a-D-Manp]{}}}}}}LINUCSPDB-CARE
#7: Polysaccharide alpha-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 910.823 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3[DManpb1-6]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/3,5,4/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-2/a4-b1_b4-c1_c3-d1_c6-e1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}[(6+1)][b-D-Manp]{}}}}LINUCSPDB-CARE
#8: Sugar...
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE / N-Acetylglucosamine


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 31 / Source method: obtained synthetically / Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Details

Has ligand of interestN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

Component
IDNameTypeEntity IDParent-IDSource
1Severe acute respiratory syndrome-related coronavirus spike glycoprotein in complex with domain-swapped antibody 2G12COMPLEX#1-#30MULTIPLE SOURCES
2spike glycoproteinPeplomerCOMPLEX#11RECOMBINANT
3antibody 2G12COMPLEX#2-#31RECOMBINANT
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
11Severe acute respiratory syndrome-related coronavirus694009
22Severe acute respiratory syndrome coronavirus 22697049
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
12Homo sapiens (human)9606
23Homo sapiens (human)9606
Details of virusEmpty: NO / Enveloped: NO / Isolate: STRAIN / Type: VIRION
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Model: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature (max): 97 K / Temperature (min): 97 K
Image recordingElectron dose: 66.43 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.17.1_3660: / Classification: refinement
EM software
IDNameCategory
2Leginonimage acquisition
4cryoSPARCCTF correction
7ISOLDEmodel fitting
8PHENIXmodel fitting
9Cootmodel fitting
10UCSF Chimeramodel fitting
12cryoSPARCinitial Euler assignment
13cryoSPARCfinal Euler assignment
14cryoSPARCclassification
15cryoSPARC3D reconstruction
16PHENIXmodel refinement
17ISOLDEmodel refinement
18Cootmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 107551 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL
Atomic model buildingPDB-ID: 6VXX

6vxx

Refine LS restraints
Refinement-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.01431005
ELECTRON MICROSCOPYf_angle_d1.5442170
ELECTRON MICROSCOPYf_dihedral_angle_d13.86211188
ELECTRON MICROSCOPYf_chiral_restr0.1575044
ELECTRON MICROSCOPYf_plane_restr0.0135320

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