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- EMDB-22913: Structure of the SARS-CoV-2 S 6P trimer in complex with the ACE2 ... -

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Basic information

Entry
Database: EMDB / ID: EMD-22913
TitleStructure of the SARS-CoV-2 S 6P trimer in complex with the ACE2 protein decoy, CTC-445.2 (State 1)
Map datanon-uniform refined map
Sample
  • Complex: Ternary complex of CTC445.2 inhibitor with SARS-CoV-2 S 6P glycoprotin
    • Complex: Spike glycoproteinSpike protein
      • Protein or peptide: SARS-CoV-2 6P stabilized spike glycoprotein
    • Complex: CTC-445.2 inhibitor
      • Protein or peptide: CTC-445.2 inhibitor
Biological speciesSevere acute respiratory syndrome coronavirus 2 / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.9 Å
AuthorsBarnes CO / Bjorkman PJ
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)P01-AI13893 United States
CitationJournal: Science / Year: 2020
Title: De novo design of potent and resilient hACE2 decoys to neutralize SARS-CoV-2.
Authors: Thomas W Linsky / Renan Vergara / Nuria Codina / Jorgen W Nelson / Matthew J Walker / Wen Su / Christopher O Barnes / Tien-Ying Hsiang / Katharina Esser-Nobis / Kevin Yu / Z Beau Reneer / ...Authors: Thomas W Linsky / Renan Vergara / Nuria Codina / Jorgen W Nelson / Matthew J Walker / Wen Su / Christopher O Barnes / Tien-Ying Hsiang / Katharina Esser-Nobis / Kevin Yu / Z Beau Reneer / Yixuan J Hou / Tanu Priya / Masaya Mitsumoto / Avery Pong / Uland Y Lau / Marsha L Mason / Jerry Chen / Alex Chen / Tania Berrocal / Hong Peng / Nicole S Clairmont / Javier Castellanos / Yu-Ru Lin / Anna Josephson-Day / Ralph S Baric / Deborah H Fuller / Carl D Walkey / Ted M Ross / Ryan Swanson / Pamela J Bjorkman / Michael Gale / Luis M Blancas-Mejia / Hui-Ling Yen / Daniel-Adriano Silva /
Abstract: We developed a de novo protein design strategy to swiftly engineer decoys for neutralizing pathogens that exploit extracellular host proteins to infect the cell. Our pipeline allowed the design, ...We developed a de novo protein design strategy to swiftly engineer decoys for neutralizing pathogens that exploit extracellular host proteins to infect the cell. Our pipeline allowed the design, validation, and optimization of de novo human angiotensin-converting enzyme 2 (hACE2) decoys to neutralize severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The best monovalent decoy, CTC-445.2, bound with low nanomolar affinity and high specificity to the receptor-binding domain (RBD) of the spike protein. Cryo-electron microscopy (cryo-EM) showed that the design is accurate and can simultaneously bind to all three RBDs of a single spike protein. Because the decoy replicates the spike protein target interface in hACE2, it is intrinsically resilient to viral mutational escape. A bivalent decoy, CTC-445.2d, showed ~10-fold improvement in binding. CTC-445.2d potently neutralized SARS-CoV-2 infection of cells in vitro, and a single intranasal prophylactic dose of decoy protected Syrian hamsters from a subsequent lethal SARS-CoV-2 challenge.
History
DepositionOct 29, 2020-
Header (metadata) releaseNov 11, 2020-
Map releaseNov 11, 2020-
UpdateDec 16, 2020-
Current statusDec 16, 2020Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.1
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by cylindrical radius
  • Surface level: 0.1
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

Downloads & links

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Map

FileDownload / File: emd_22913.map.gz / Format: CCP4 / Size: 307.5 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationnon-uniform refined map
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.87 Å/pix.
x 432 pix.
= 375.408 Å
0.87 Å/pix.
x 432 pix.
= 375.408 Å
0.87 Å/pix.
x 432 pix.
= 375.408 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.869 Å
Density
Contour LevelBy AUTHOR: 0.1 / Movie #1: 0.1
Minimum - Maximum-0.25806242 - 0.5942886
Average (Standard dev.)-8.740568e-05 (±0.020975793)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions432432432
Spacing432432432
CellA=B=C: 375.40802 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.8690.8690.869
M x/y/z432432432
origin x/y/z0.0000.0000.000
length x/y/z375.408375.408375.408
α/β/γ90.00090.00090.000
start NX/NY/NZ-300-300-300
NX/NY/NZ600600600
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS432432432
D min/max/mean-0.2580.594-0.000

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Supplemental data

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Sample components

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Entire : Ternary complex of CTC445.2 inhibitor with SARS-CoV-2 S 6P glycoprotin

EntireName: Ternary complex of CTC445.2 inhibitor with SARS-CoV-2 S 6P glycoprotin
Components
  • Complex: Ternary complex of CTC445.2 inhibitor with SARS-CoV-2 S 6P glycoprotin
    • Complex: Spike glycoproteinSpike protein
      • Protein or peptide: SARS-CoV-2 6P stabilized spike glycoprotein
    • Complex: CTC-445.2 inhibitor
      • Protein or peptide: CTC-445.2 inhibitor

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Supramolecule #1: Ternary complex of CTC445.2 inhibitor with SARS-CoV-2 S 6P glycoprotin

SupramoleculeName: Ternary complex of CTC445.2 inhibitor with SARS-CoV-2 S 6P glycoprotin
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Molecular weightExperimental: 600 KDa

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Supramolecule #2: Spike glycoprotein

SupramoleculeName: Spike glycoprotein / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Recombinant expressionOrganism: Homo sapiens (human)

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Supramolecule #3: CTC-445.2 inhibitor

SupramoleculeName: CTC-445.2 inhibitor / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria)

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Macromolecule #1: SARS-CoV-2 6P stabilized spike glycoprotein

MacromoleculeName: SARS-CoV-2 6P stabilized spike glycoprotein / type: protein_or_peptide / ID: 1 / Enantiomer: LEVO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MFVFLVLLPL VSSQCVNLTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIH VSGTNGTKRF DNPVLPFNDG VYFASTEKSN IIRGWIFGTT LDSKTQSLLI V NNATNVVI KVCEFQFCND PFLGVYYHKN NKSWMESEFR VYSSANNCTF ...String:
MFVFLVLLPL VSSQCVNLTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIH VSGTNGTKRF DNPVLPFNDG VYFASTEKSN IIRGWIFGTT LDSKTQSLLI V NNATNVVI KVCEFQFCND PFLGVYYHKN NKSWMESEFR VYSSANNCTF EYVSQPFLMD LE GKQGNFK NLREFVFKNI DGYFKIYSKH TPINLVRDLP QGFSALEPLV DLPIGINITR FQT LLALHR SYLTPGDSSS GWTAGAAAYY VGYLQPRTFL LKYNENGTIT DAVDCALDPL SETK CTLKS FTVEKGIYQT SNFRVQPTES IVRFPNITNL CPFGEVFNAT RFASVYAWNR KRISN CVAD YSVLYNSASF STFKCYGVSP TKLNDLCFTN VYADSFVIRG DEVRQIAPGQ TGKIAD YNY KLPDDFTGCV IAWNSNNLDS KVGGNYNYLY RLFRKSNLKP FERDISTEIY QAGSTPC NG VEGFNCYFPL QSYGFQPTNG VGYQPYRVVV LSFELLHAPA TVCGPKKSTN LVKNKCVN F NFNGLTGTGV LTESNKKFLP FQQFGRDIAD TTDAVRDPQT LEILDITPCS FGGVSVITP GTNTSNQVAV LYQDVNCTEV PVAIHADQLT PTWRVYSTGS NVFQTRAGCL IGAEHVNNSY ECDIPIGAG ICASYQTQTN SPGSASSVAS QSIIAYTMSL GAENSVAYSN NSIAIPTNFT I SVTTEILP VSMTKTSVDC TMYICGDSTE CSNLLLQYGS FCTQLNRALT GIAVEQDKNT QE VFAQVKQ IYKTPPIKDF GGFNFSQILP DPSKPSKRSP IEDLLFNKVT LADAGFIKQY GDC LGDIAA RDLICAQKFN GLTVLPPLLT DEMIAQYTSA LLAGTITSGW TFGAGPALQI PFPM QMAYR FNGIGVTQNV LYENQKLIAN QFNSAIGKIQ DSLSSTPSAL GKLQDVVNQN AQALN TLVK QLSSNFGAIS SVLNDILSRL DPPEAEVQID RLITGRLQSL QTYVTQQLIR AAEIRA SAN LAATKMSECV LGQSKRVDFC GKGYHLMSFP QSAPHGVVFL HVTYVPAQEK NFTTAPA IC HDGKAHFPRE GVFVSNGTHW FVTQRNFYEP QIITTDNTFV SGNCDVVIGI VNNTVYDP L QPELDSFKEE LDKYFKNHTS PDVDLGDISG INASVVNIQK EIDRLNEVAK NLNESLIDL QELGKYEQGS GYIPEAPRDG QAYVRKDGEW VLLSTFLGRS LEVLFQGPGH HHHHHHH

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Macromolecule #2: CTC-445.2 inhibitor

MacromoleculeName: CTC-445.2 inhibitor / type: protein_or_peptide / ID: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria)
SequenceString:
SAEIDLGKGD FREIRASEDA REAAEALAEA ARAMKEALEI IREIAEKLRD SSRASEAAKR IAKAIRKAAD AIAEAAKIA ARAAKDGDAA RNAENAARKA KEFAEEQAKL ADMYAELAKN GDKSSVLEQL KTFADKAFHE M EDRFYQAA LAVFEAAEAA AG

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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

Concentration3.0 mg/mL
BufferpH: 8
Component:
ConcentrationFormulaName
0.02 MTris-HCLTrisTris
0.12 MNaClSodium chlorideSodium Chloride
GridModel: UltrAuFoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Atmosphere: AIR / Details: 0.2 mA
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 295 K / Instrument: FEI VITROBOT MARK IV / Details: 3s blot, 0 blot force.
DetailsMonodisperse sample

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Electron microscopy

MicroscopeFEI TALOS ARCTICA
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.8 µm / Nominal magnification: 45000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Details3x3 beam tilt collection
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number grids imaged: 1 / Number real images: 2250 / Average exposure time: 3.6 sec. / Average electron dose: 60.0 e/Å2
Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 420998
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final 3D classificationNumber classes: 4 / Software - Name: cryoSPARC (ver. v2.14)
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionNumber classes used: 1 / Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. v2.14) / Number images used: 39795
FSC plot (resolution estimation)

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