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- PDB-6zb5: SARS CoV-2 Spike protein, Closed conformation, C3 symmetry -

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Basic information

Entry
Database: PDB / ID: 6zb5
TitleSARS CoV-2 Spike protein, Closed conformation, C3 symmetry
ComponentsSpike glycoproteinSpike protein
KeywordsVIRAL PROTEIN / SARS-Cov2 / COVID / Linoleic Acid / Spike
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 / host cell endoplasmic reticulum-Golgi intermediate compartment membrane ...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 / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / entry receptor-mediated virion attachment to host cell / receptor-mediated endocytosis of virus by host cell / Attachment and Entry / membrane fusion / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / receptor ligand activity / host cell surface receptor binding / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / virion attachment to host cell / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell plasma membrane / virion membrane / membrane / identical protein binding / 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 / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Spike glycoprotein, N-terminal domain superfamily / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Spike glycoprotein, betacoronavirus / 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 ...Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Spike glycoprotein, N-terminal domain superfamily / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Spike glycoprotein, betacoronavirus / 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 2 (HR2) region profile. / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 1 (HR1) region profile. / Spike glycoprotein S2 superfamily, coronavirus / Spike glycoprotein S2, coronavirus / Coronavirus spike glycoprotein S2 / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal
Similarity search - Domain/homology
LINOLEIC ACID / Spike glycoprotein
Similarity search - Component
Biological speciesSevere acute respiratory syndrome coronavirus 2
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.85 Å
AuthorsToelzer, C. / Gupta, K. / Yadav, S.K.N. / Burucu, U. / Schaffitzel, C. / Berger, I.
Funding support United Kingdom, 7items
OrganizationGrant numberCountry
Biotechnology and Biological Sciences Research Council (BBSRC)BB/P000940/1 United Kingdom
Wellcome Trust202904/Z/16/Z United Kingdom
Wellcome Trust206181/Z/17/Z United Kingdom
Biotechnology and Biological Sciences Research Council (BBSRC)BB/L01386X/1 United Kingdom
Wellcome Trust210701/Z/18/Z United Kingdom
Wellcome Trust106115/Z/14/Z United Kingdom
Biotechnology and Biological Sciences Research Council (BBSRC)BB/R000484/1 United Kingdom
CitationJournal: Science / Year: 2020
Title: Free fatty acid binding pocket in the locked structure of SARS-CoV-2 spike protein.
Authors: Christine Toelzer / Kapil Gupta / Sathish K N Yadav / Ufuk Borucu / Andrew D Davidson / Maia Kavanagh Williamson / Deborah K Shoemark / Frederic Garzoni / Oskar Staufer / Rachel Milligan / ...Authors: Christine Toelzer / Kapil Gupta / Sathish K N Yadav / Ufuk Borucu / Andrew D Davidson / Maia Kavanagh Williamson / Deborah K Shoemark / Frederic Garzoni / Oskar Staufer / Rachel Milligan / Julien Capin / Adrian J Mulholland / Joachim Spatz / Daniel Fitzgerald / Imre Berger / Christiane Schaffitzel /
Abstract: Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), represents a global crisis. Key to SARS-CoV-2 therapeutic development is unraveling the ...Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), represents a global crisis. Key to SARS-CoV-2 therapeutic development is unraveling the mechanisms that drive high infectivity, broad tissue tropism, and severe pathology. Our 2.85-angstrom cryo-electron microscopy structure of SARS-CoV-2 spike (S) glycoprotein reveals that the receptor binding domains tightly bind the essential free fatty acid linoleic acid (LA) in three composite binding pockets. A similar pocket also appears to be present in the highly pathogenic severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome coronavirus (MERS-CoV). LA binding stabilizes a locked S conformation, resulting in reduced angiotensin-converting enzyme 2 (ACE2) interaction in vitro In human cells, LA supplementation synergizes with the COVID-19 drug remdesivir, suppressing SARS-CoV-2 replication. Our structure directly links LA and S, setting the stage for intervention strategies that target LA binding by SARS-CoV-2.
History
DepositionJun 7, 2020Deposition site: PDBE / Processing site: PDBE
Revision 1.0Sep 30, 2020Provider: repository / Type: Initial release
Revision 1.1Nov 18, 2020Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID

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Structure visualization

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Structure viewerMolecule:
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Assembly

Deposited unit
C: Spike glycoprotein
B: Spike glycoprotein
A: Spike glycoprotein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)425,74629
Polymers419,2083
Non-polymers6,53926
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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


Mass: 139735.922 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: Trichoplusia ni (cabbage looper) / References: UniProt: P0DTC2
#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.: 3 / Source method: obtained synthetically
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 / N-Acetylglucosamine


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 20
Source method: isolated from a genetically manipulated source
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
#4: Chemical ChemComp-EIC / LINOLEIC ACID / 9,12-LINOLEIC ACID / Linoleic acid


Mass: 280.445 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C18H32O2 / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY

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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: SARS CoV-2 Spike protein, Closed conformation, C3 symmetry
Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 0.54 MDa / Experimental value: NO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Source (recombinant)Organism: Trichoplusia ni (cabbage looper)
Buffer solutionpH: 7.5
SpecimenConc.: 1.2 mg/ml / Embedding 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-PROPANE

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Electron microscopy imaging

MicroscopyModel: TFS TALOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal magnification: 130000 X / Nominal defocus max: -2 nm / Nominal defocus min: -0.8 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 11 sec. / Electron dose: 60.5 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 3289
Image scansMovie frames/image: 55

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Processing

SoftwareName: PHENIX / Version: 1.17_3644: / Classification: refinement
EM software
IDNameCategory
7UCSF Chimeramodel fitting
9RELIONinitial Euler assignment
10RELIONfinal Euler assignment
11RELIONclassification
12RELION3D reconstruction
19PHENIXmodel refinement
20Cootmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C3 (3 fold cyclic)
3D reconstructionResolution: 2.85 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 217815 / Algorithm: FOURIER SPACE / Num. of class averages: 1 / Symmetry type: POINT
RefinementCross valid method: NONE
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00725379
ELECTRON MICROSCOPYf_angle_d0.734483
ELECTRON MICROSCOPYf_dihedral_angle_d12.2623544
ELECTRON MICROSCOPYf_chiral_restr0.0493967
ELECTRON MICROSCOPYf_plane_restr0.0064419

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