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- EMDB-31776: Cryo-EM structure of SARS-CoV-2 S-Delta variant (B.1.617.2), one ... -

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Basic information

Entry
Database: EMDB / ID: EMD-31776
TitleCryo-EM structure of SARS-CoV-2 S-Delta variant (B.1.617.2), one RBD-up conformation 1
Map dataSARS-CoV-2 S-Delta variant, one RBD-up conformation 1, unsharpened map
Sample
  • Organelle or cellular component: SARS-CoV-2 spike glycoprotein
    • Protein or peptide: Spike glycoprotein
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
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 / 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 / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / membrane fusion / receptor-mediated endocytosis of virus by host cell / Attachment and Entry / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / receptor ligand activity / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / 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 / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Betacoronavirus-like spike glycoprotein S1, N-terminal / Betacoronavirus spike glycoprotein S1, receptor binding / 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
Biological speciesSevere acute respiratory syndrome coronavirus 2
Methodsingle particle reconstruction / cryo EM / Resolution: 2.9 Å
AuthorsYang TJ / Yu PY / Chang YC / Hsu STD
Funding support Taiwan, 4 items
OrganizationGrant numberCountry
Ministry of Science and Technology (MoST, Taiwan)109-3114-Y-001-001 Taiwan
Academia Sinica (Taiwan)AS-CDA-109-L08 Taiwan
Academia Sinica (Taiwan)AS-CFII-108-110 Taiwan
Academia Sinica (Taiwan)AS-CFII108-111 Taiwan
CitationJournal: To Be Published
Title: Cryo-EM structure of SARS-CoV-2 S-Delta variant (B.1.617.2), one RBD-up conformation 1
Authors: Yang TJ / Yu PY / Chang YC / Hsu STD
History
DepositionAug 21, 2021-
Header (metadata) releaseOct 6, 2021-
Map releaseOct 6, 2021-
UpdateOct 6, 2021-
Current statusOct 6, 2021Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.3
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by cylindrical radius
  • Surface level: 0.3
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7v7o
  • Surface level: 0.3
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_31776.png

Downloads & links

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Map

FileDownload / File: emd_31776.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationSARS-CoV-2 S-Delta variant, one RBD-up conformation 1, unsharpened map
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.1 Å/pix.
x 384 pix.
= 422.4 Å		1.1 Å/pix.
x 384 pix.
= 422.4 Å		1.1 Å/pix.
x 384 pix.
= 422.4 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.1 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.3 / Movie #1: 0.3
Minimum - Maximum-0.45397985 - 1.7754517
Average (Standard dev.)-0.0020735958 (±0.03884574)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions384384384
Spacing384384384
CellA=B=C: 422.40002 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.11.11.1
M x/y/z384384384
origin x/y/z0.0000.0000.000
length x/y/z422.400422.400422.400
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS384384384
D min/max/mean-0.4541.775-0.002

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Supplemental data

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Additional map: SARS-CoV-2 S-Delta variant, one RBD-up conformation 1, sharpened map

Fileemd_31776_additional_1.map
AnnotationSARS-CoV-2 S-Delta variant, one RBD-up conformation 1, sharpened map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : SARS-CoV-2 spike glycoprotein

EntireName: SARS-CoV-2 spike glycoprotein
Components
  • Organelle or cellular component: SARS-CoV-2 spike glycoprotein
    • Protein or peptide: Spike glycoprotein
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: SARS-CoV-2 spike glycoprotein

SupramoleculeName: SARS-CoV-2 spike glycoprotein / type: organelle_or_cellular_component / ID: 1 / Parent: 0 / Macromolecule list: #1
Details: Delta variant (B.1.617.2), one RBD-up conformation 1
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Molecular weightExperimental: 540 KDa
Recombinant expressionOrganism: Homo sapiens (human)

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Macromolecule #1: Spike glycoprotein

MacromoleculeName: Spike glycoprotein / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Molecular weightTheoretical: 142.047203 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MFVFLVLLPL VSSQCVNLRT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIHV SGTNGTKRFD NPVLPFNDG VYFASTEKSN IIRGWIFGTT LDSKTQSLLI VNNATNVVIK VCEFQFCNDP FLDVYYHKNN KSWMESGVYS S ANNCTFEY ...String:
MFVFLVLLPL VSSQCVNLRT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIHV SGTNGTKRFD NPVLPFNDG VYFASTEKSN IIRGWIFGTT LDSKTQSLLI VNNATNVVIK VCEFQFCNDP FLDVYYHKNN KSWMESGVYS S ANNCTFEY VSQPFLMDLE GKQGNFKNLR EFVFKNIDGY FKIYSKHTPI NLVRDLPQGF SALEPLVDLP IGINITRFQT LL ALHRSYL TPGDSSSGWT AGAAAYYVGY LQPRTFLLKY NENGTITDAV DCALDPLSET KCTLKSFTVE KGIYQTSNFR VQP TESIVR FPNITNLCPF GEVFNATRFA SVYAWNRKRI SNCVADYSVL YNSASFSTFK CYGVSPTKLN DLCFTNVYAD SFVI RGDEV RQIAPGQTGK IADYNYKLPD DFTGCVIAWN SNNLDSKVGG NYNYRYRLFR KSNLKPFERD ISTEIYQAGS KPCNG VEGF NCYFPLQSYG FQPTNGVGYQ PYRVVVLSFE LLHAPATVCG PKKSTNLVKN KCVNFNFNGL TGTGVLTESN KKFLPF QQF GRDIADTTDA VRDPQTLEIL DITPCSFGGV SVITPGTNTS NQVAVLYQGV NCTEVPVAIH ADQLTPTWRV YSTGSNV FQ TRAGCLIGAE HVNNSYECDI PIGAGICASY QTQTNSRGSA SSVASQSIIA YTMSLGAENS VAYSNNSIAI PTNFTISV T TEILPVSMTK TSVDCTMYIC GDSTECSNLL LQYGSFCTQL NRALTGIAVE QDKNTQEVFA QVKQIYKTPP IKDFGGFNF SQILPDPSKP SKRSFIEDLL FNKVTLADAG FIKQYGDCLG DIAARDLICA QKFNGLTVLP PLLTDEMIAQ YTSALLAGTI TSGWTFGAG AALQIPFAMQ MAYRFNGIGV TQNVLYENQK LIANQFNSAI GKIQDSLSST ASALGKLQNV VNQNAQALNT L VKQLSSNF GAISSVLNDI LSRLDPPEAE VQIDRLITGR LQSLQTYVTQ QLIRAAEIRA SANLAATKMS ECVLGQSKRV DF CGKGYHL MSFPQSAPHG VVFLHVTYVP AQEKNFTTAP AICHDGKAHF PREGVFVSNG THWFVTQRNF YEPQIITTDN TFV SGNCDV VIGIVNNTVY DPLQPELDSF KEELDKYFKN HTSPDVDLGD ISGINASVVN IQKEIDRLNE VAKNLNESLI DLQE LGKYE QEFGSGGYIP EAPRDGQAYV RKDGEWVLLS TFLKGQDNSA DIQHSGRPLE SRGPFEQKLI SEEDLNMHTG HHHHH H

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Macromolecule #3: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 3 / Number of copies: 13 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

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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

Concentration1 mg/mL
BufferpH: 7.6
Component:
ConcentrationFormulaName
50.0 mMTris
150.0 mMNaCl
0.02 %sodium azide
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV
Details: blot for 2.5 seconds before plunging; blot force: 0; waiting time: 30s.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 1.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm
Sample stageCooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: cryoSPARC
Startup modelType of model: INSILICO MODEL
Details: generated by ab-initio reconstruction in cryoSparc v2
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 249836
Initial angle assignmentType: RANDOM ASSIGNMENT / Software - Name: cryoSPARC
Final angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: cryoSPARC

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