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- PDB-9f9y: SARS-CoV-2 BA-2.87.1 Spike ectodomain -

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Basic information

Entry
Database: PDB / ID: 9f9y
TitleSARS-CoV-2 BA-2.87.1 Spike ectodomain
ComponentsSpike glycoprotein,Fibritin
KeywordsVIRAL PROTEIN / immune system / SARS-CoV-2 / RBD / Spike / glycoprotein / BA.2.87.1 / receptor / coronavirus-2 / N-terminal domain / Supersite
Function / homology
Function and homology information


virion component / 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 ...virion component / 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 / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / Attachment and Entry / 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
Fibritin C-terminal / Fibritin C-terminal region / 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. ...Fibritin C-terminal / Fibritin C-terminal region / 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
Similarity search - Domain/homology
Spike glycoprotein / Fibritin
Similarity search - Component
Biological speciesSevere acute respiratory syndrome coronavirus 2
Enterobacteria phage T4 (virus)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsRen, J. / Stuart, D.I. / Duyvesteyn, H.M.E.
Funding support United Kingdom, 2items
OrganizationGrant numberCountry
CAMS Innovation Fund for Medical Sciences (CIFMS)2018-I2M-2-002 United Kingdom
Medical Research Council (MRC, United Kingdom)MR/N00065X/1 United Kingdom
Citation
Journal: Structure / Year: 2024
Title: Concerted deletions eliminate a neutralizing supersite in SARS-CoV-2 BA.2.87.1 spike.
Authors: Helen M E Duyvesteyn / Aiste Dijokaite-Guraliuc / Chang Liu / Piyada Supasa / Barbara Kronsteiner / Katie Jeffery / Lizzie Stafford / Paul Klenerman / Susanna J Dunachie / / Juthathip ...Authors: Helen M E Duyvesteyn / Aiste Dijokaite-Guraliuc / Chang Liu / Piyada Supasa / Barbara Kronsteiner / Katie Jeffery / Lizzie Stafford / Paul Klenerman / Susanna J Dunachie / / Juthathip Mongkolsapaya / Elizabeth E Fry / Jingshan Ren / David I Stuart / Gavin R Screaton /
Abstract: BA.2.87.1 represents a major shift in the BA.2 lineage of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and is unusual in having two lengthy deletions of polypeptide in the spike (S) ...BA.2.87.1 represents a major shift in the BA.2 lineage of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and is unusual in having two lengthy deletions of polypeptide in the spike (S) protein, one of which removes a beta-strand. Here we investigate its neutralization by a variety of sera from infected and vaccinated individuals and determine its spike (S) ectodomain structure. The BA.2.87.1 receptor binding domain (RBD) is structurally conserved and the RBDs are tightly packed in an "all-down" conformation with a small rotation relative to the trimer axis as compared to the closest previously observed conformation. The N-terminal domain (NTD) maintains a remarkably similar structure overall; however, the rearrangements resulting from the deletions essentially destroy the so-called supersite epitope and eliminate one glycan site, while a mutation creates an additional glycan site, effectively shielding another NTD epitope. BA.2.87.1 is relatively easily neutralized but acquisition of additional mutations in the RBD could increase antibody escape allowing it to become a dominant sub-lineage.
#1: Journal: Acta Crystallogr., Sect. D: Biol. Crystallogr. / Year: 2019
Title: Macromolecular structure determination using X-rays, neutrons and electrons: recent developments in Phenix
Authors: Liebschner, D. / Afonine, P.V.
#2: Journal: Nature Methods / Year: 2017
Title: cryoSPARC: algorithms for rapid unsupervised cryo-EM structure determination
Authors: Punjani, A. / Rubinstein, J.L.
History
DepositionMay 9, 2024Deposition site: PDBE / Processing site: PDBE
Revision 1.0Aug 21, 2024Provider: repository / Type: Initial release
Revision 1.1Sep 4, 2024Group: Data collection / Database references / Category: citation / citation_author / em_admin
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 / _em_admin.last_update
Revision 1.2Oct 16, 2024Group: Data collection / Database references / Structure summary
Category: citation / em_admin ...citation / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _em_admin.last_update / _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 glycoprotein,Fibritin
B: Spike glycoprotein,Fibritin
C: Spike glycoprotein,Fibritin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)430,95451
Polymers418,5073
Non-polymers12,44748
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein Spike glycoprotein,Fibritin / S glycoprotein / E2 / Peplomer protein / Collar protein / Whisker antigen control protein


Mass: 139502.484 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus 2, (gene. exp.) Enterobacteria phage T4 (virus)
Gene: S, 2, wac / Cell line (production host): Human Embryonic Kidney 293T / Production host: Homo sapiens (human) / References: UniProt: P0DTC2, UniProt: P10104
#2: 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.: 9
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
#3: 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


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 39 / 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
Has ligand of interestN
Has protein modificationY

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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

ComponentName: BA-2.87.1 variant SARS-CoV2 S protein / Type: COMPLEX
Details: Spike protein recombinantly expressed using sequence of human-derived BA-2.87.1 variant of SARS-CoV2.
Entity ID: #1 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
11Severe acute respiratory syndrome coronavirus 22697049
21Enterobacteria phage T4 (virus)10665
Source (recombinant)Organism: Homo sapiens (human)
Details of virusEmpty: YES / Enveloped: NO / Isolate: STRAIN / Type: VIRUS-LIKE PARTICLE
Natural hostOrganism: Homo sapiens
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: BA.2.87.1 Spike
Specimen supportGrid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: C-flat-2/1
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: OTHER
Electron lensMode: BRIGHT FIELD / Nominal magnification: 165000 X / Nominal defocus max: 2600 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 40 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 9818 / Details: Images were collected in EER format.
EM imaging opticsEnergyfilter name: TFS Selectris X / Energyfilter slit width: 10 eV

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Processing

EM software
IDNameVersionCategory
1cryoSPARCv.4.3.1particle selection
2EPUimage acquisition
4cryoSPARCv.4.3.1CTF correction
7Cootmodel fitting
8PHENIXmodel fitting
10cryoSPARCinitial Euler assignment
11cryoSPARCv.4.3.1final Euler assignment
12cryoSPARCv.4.3.1classification
13cryoSPARCv.4.3.13D reconstruction
14PHENIXmodel refinement
CTF correctionDetails: Determined using cryoSPARC live patch CTF correction.
Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 504319
SymmetryPoint symmetry: C3 (3 fold cyclic)
3D reconstructionResolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 37441
Details: Determined in cryosparc local resolution estimation module.
Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingProtocol: OTHER / Space: REAL
Details: Phenix real space refinement with manual checks using coot.
Atomic model buildingPDB-ID: 8R1C

8r1c


Accession code: 8R1C / Source name: PDB / Type: experimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00325374
ELECTRON MICROSCOPYf_angle_d0.45334521
ELECTRON MICROSCOPYf_dihedral_angle_d9.9379105
ELECTRON MICROSCOPYf_chiral_restr0.0424080
ELECTRON MICROSCOPYf_plane_restr0.0034380

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