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- EMDB-28856: SARS-CoV-2 spike protein trimer (down conformation) bound with a ... -

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Basic information

Entry
Database: EMDB / ID: EMD-28856
TitleSARS-CoV-2 spike protein trimer (down conformation) bound with a nanobody
Map dataComposite (main) map of SARS-CoV-2 spike protein trimer with a nanobody bound to two of the RBDs.
Sample
  • Complex: Complex of a nanobody bound to a trimer of SARS-CoV-2 spike proteins
    • Complex: Spike glycoprotein trimer
      • Protein or peptide: Spike glycoprotein
    • Complex: Anti-S1 Nanobody
      • Protein or peptide: Anti-S1 Nanobody
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
KeywordsSARS-CoV-2 / spike / antibody / nanobody / VIRAL PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / viral translation / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion ...symbiont-mediated disruption of host tissue / Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / viral translation / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / membrane fusion / entry receptor-mediated virion attachment to host cell / Attachment and Entry / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / 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 / symbiont entry into host cell / 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, N-terminal domain superfamily / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus / Spike glycoprotein, betacoronavirus / 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 (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, N-terminal domain superfamily / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus / Spike glycoprotein, betacoronavirus / 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 / Betacoronavirus spike glycoprotein S1, receptor binding / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Betacoronavirus-like spike glycoprotein S1, N-terminal / Spike glycoprotein S2 superfamily, coronavirus / 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, coronavirus / Coronavirus spike glycoprotein S2
Similarity search - Domain/homology
Biological speciesSevere acute respiratory syndrome coronavirus 2 / Lama glama (llama)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.7 Å
AuthorsLaughlin ZT / Patel A / Ortlund EA
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Biomedical Imaging and Bioengineering (NIH/NIBIB)EB027690-04S United States
CitationJournal: To Be Published
Title: SARS-CoV-2 spike protein (down conformation) bound with a nanobody
Authors: Laughlin ZL / Patel A / Ortlund EA
History
DepositionNov 11, 2022-
Header (metadata) releaseNov 15, 2023-
Map releaseNov 15, 2023-
UpdateOct 23, 2024-
Current statusOct 23, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_28856.png

Downloads & links

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Map

FileDownload / File: emd_28856.map.gz / Format: CCP4 / Size: 274.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationComposite (main) map of SARS-CoV-2 spike protein trimer with a nanobody bound to two of the RBDs.
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesX (Sec.)Y (Row.)Z (Col.)
1.07 Å/pix.
x 416 pix.
= 444.746 Å		1.07 Å/pix.
x 416 pix.
= 444.746 Å		1.07 Å/pix.
x 416 pix.
= 444.746 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.0691 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 2.5
Minimum - Maximum-102.900840000000002 - 115.569540000000003
Average (Standard dev.)0.00020824684 (±1.1165102)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderZYX
Origin000
Dimensions416416416
Spacing416416416
CellA=B=C: 444.7456 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : Complex of a nanobody bound to a trimer of SARS-CoV-2 spike proteins

EntireName: Complex of a nanobody bound to a trimer of SARS-CoV-2 spike proteins
Components
  • Complex: Complex of a nanobody bound to a trimer of SARS-CoV-2 spike proteins
    • Complex: Spike glycoprotein trimer
      • Protein or peptide: Spike glycoprotein
    • Complex: Anti-S1 Nanobody
      • Protein or peptide: Anti-S1 Nanobody
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: Complex of a nanobody bound to a trimer of SARS-CoV-2 spike proteins

SupramoleculeName: Complex of a nanobody bound to a trimer of SARS-CoV-2 spike proteins
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2

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Supramolecule #2: Spike glycoprotein trimer

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

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Supramolecule #3: Anti-S1 Nanobody

SupramoleculeName: Anti-S1 Nanobody / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2
Source (natural)Organism: Lama glama (llama)

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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: 125.882547 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: QCVNLTTRTQ LPPAYTNSFT RGVYYPDKVF RSSVLHSTQD LFLPFFSNVT WFHAIHVSGT NGTKRFDNPV LPFNDGVYFA STEKSNIIR GWIFGTTLDS KTQSLLIVNN ATNVVIKVCE FQFCNDPFLG VYYHKNNKSW MESEFRVYSS ANNCTFEYVS Q PFLMDLEG ...String:
QCVNLTTRTQ LPPAYTNSFT RGVYYPDKVF RSSVLHSTQD LFLPFFSNVT WFHAIHVSGT NGTKRFDNPV LPFNDGVYFA STEKSNIIR GWIFGTTLDS KTQSLLIVNN ATNVVIKVCE FQFCNDPFLG VYYHKNNKSW MESEFRVYSS ANNCTFEYVS Q PFLMDLEG KQGNFKNLRE FVFKNIDGYF KIYSKHTPIN LVRDLPQGFS ALEPLVDLPI GINITRFQTL LALHRSYLTP GD SSSGWTA GAAAYYVGYL QPRTFLLKYN ENGTITDAVD CALDPLSETK CTLKSFTVEK GIYQTSNFRV QPTESIVRFP NIT NLCPFG EVFNATRFAS VYAWNRKRIS NCVADYSVLY NSASFSTFKC YGVSPTKLND LCFTNVYADS FVIRGDEVRQ IAPG QTGKI ADYNYKLPDD FTGCVIAWNS NNLDSKVGGN YNYLYRLFRK SNLKPFERDI STEIYQAGST PCNGVEGFNC YFPLQ SYGF QPTNGVGYQP YRVVVLSFEL LHAPATVCGP KKSTNLVKNK CVNFNFNGLT GTGVLTESNK KFLPFQQFGR DIADTT DAV RDPQTLEILD ITPCSFGGVS VITPGTNTSN QVAVLYQDVN CTEVPVAIHA DQLTPTWRVY STGSNVFQTR AGCLIGA EH VNNSYECDIP IGAGICASYQ TQTNSPRRAR SVASQSIIAY TMSLGAENSV AYSNNSIAIP TNFTISVTTE ILPVSMTK T SVDCTMYICG DSTECSNLLL QYGSFCTQLN RALTGIAVEQ DKNTQEVFAQ VKQIYKTPPI KDFGGFNFSQ ILPDPSKPS KRSPIEDLLF NKVTLADAGF IKQYGDCLGD IAARDLICAQ KFNGLTVLPP LLTDEMIAQY TSALLAGTIT SGWTFGAGPA LQIPFPMQM AYRFNGIGVT QNVLYENQKL IANQFNSAIG KIQDSLSSTP SALGKLQDVV NQNAQALNTL VKQLSSNFGA I SSVLNDIL SRLDPPEAEV QIDRLITGRL QSLQTYVTQQ LIRAAEIRAS ANLAATKMSE CVLGQSKRVD FCGKGYHLMS FP QSAPHGV VFLHVTYVPA QEKNFTTAPA ICHDGKAHFP REGVFVSNGT HWFVTQRNFY EPQIITTDNT FVSGNCDVVI GIV NNTVYD PLQPELDSFK

UniProtKB: Spike glycoprotein

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Macromolecule #2: Anti-S1 Nanobody

MacromoleculeName: Anti-S1 Nanobody / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Lama glama (llama)
Molecular weightTheoretical: 12.360667 KDa
Recombinant expressionOrganism: Lama glama (llama)
SequenceString:
EVQLVESGGG LVQPGGSLRL SCAASGGTFS SIGMGWFRQA PGKEREFVAA ISWDGGATAY ADSVKGRFTI SADNSKNTAY LQMNSLKPE DTAVYYCAKE DVGKPFDWGQ GTLVTVSSG

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Macromolecule #4: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 4 / Number of copies: 25 / 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

Concentration0.7 mg/mL
BufferpH: 7.4
Component:
ConcentrationFormulaName
137.0 mMNaClSodium chloride
2.7 mMKClPotassium chloride
8.0 mMNa2HPO4Sodium phosphate dibasic
2.0 mMKH2PO4Potassium phosphate monobasic
GridModel: C-flat-1.2/1.3 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: AIR
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 297 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Specialist opticsEnergy filter - Slit width: 30 eV
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Number grids imaged: 1 / Number real images: 4186 / Average electron dose: 63.81 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 / Nominal defocus max: 2.6 µm / Nominal defocus min: 0.6 µm / Nominal magnification: 81000
Sample stageCooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 1725357
Startup modelType of model: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.7 Å / Resolution method: FSC 0.5 CUT-OFF / Software - Name: cryoSPARC (ver. 3.3.1) / Number images used: 489600
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 3.3.1)
Final 3D classificationNumber classes: 4 / Avg.num./class: 431339 / Software - Name: cryoSPARC (ver. 3.3.1)
FSC plot (resolution estimation)

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Atomic model buiding 1

RefinementSpace: REAL / Protocol: RIGID BODY FIT / Overall B value: 102 / Target criteria: Correlation coefficient
Output model

PDB-8f4p:
SARS-CoV-2 spike protein trimer (down conformation) bound with a nanobody

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