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- EMDB-30642: S-3C1-F2 structure, two RBDs are up and one RBD is down, the two ... -

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Basic information

Entry
Database: EMDB / ID: EMD-30642
TitleS-3C1-F2 structure, two RBDs are up and one RBD is down, the two up RBD bind with a 3C1 fab.
Map data
Sample
  • Complex: Complex of SARS-Cov2-S protein with 3C1 fab, two RBDs are up and one RBD is down, only the two up RBDs bind with a 3C1 fab
    • Complex: SARS-Cov2-S protein
      • Protein or peptide: Spike glycoproteinSpike protein
    • Complex: 3C1 fab with a heavy chain and a light chain
      • Protein or peptide: The heavy chain of 3C1 fab
      • Protein or peptide: The light chain of 3C1 fab
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
Biological speciesSevere acute respiratory syndrome coronavirus 2 / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 5.6 Å
AuthorsCong Y / Liu CX
Funding support China, 1 items
OrganizationGrant numberCountry
Chinese Academy of SciencesXDB29040300 China
CitationJournal: Nat Commun / Year: 2021
Title: Development and structural basis of a two-MAb cocktail for treating SARS-CoV-2 infections.
Authors: Chao Zhang / Yifan Wang / Yuanfei Zhu / Caixuan Liu / Chenjian Gu / Shiqi Xu / Yalei Wang / Yu Zhou / Yanxing Wang / Wenyu Han / Xiaoyu Hong / Yong Yang / Xueyang Zhang / Tingfeng Wang / ...Authors: Chao Zhang / Yifan Wang / Yuanfei Zhu / Caixuan Liu / Chenjian Gu / Shiqi Xu / Yalei Wang / Yu Zhou / Yanxing Wang / Wenyu Han / Xiaoyu Hong / Yong Yang / Xueyang Zhang / Tingfeng Wang / Cong Xu / Qin Hong / Shutian Wang / Qiaoyu Zhao / Weihua Qiao / Jinkai Zang / Liangliang Kong / Fangfang Wang / Haikun Wang / Di Qu / Dimitri Lavillette / Hong Tang / Qiang Deng / Youhua Xie / Yao Cong / Zhong Huang /
Abstract: The ongoing pandemic of coronavirus disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Neutralizing antibodies against SARS-CoV-2 are an option for ...The ongoing pandemic of coronavirus disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Neutralizing antibodies against SARS-CoV-2 are an option for drug development for treating COVID-19. Here, we report the identification and characterization of two groups of mouse neutralizing monoclonal antibodies (MAbs) targeting the receptor-binding domain (RBD) on the SARS-CoV-2 spike (S) protein. MAbs 2H2 and 3C1, representing the two antibody groups, respectively, bind distinct epitopes and are compatible in formulating a noncompeting antibody cocktail. A humanized version of the 2H2/3C1 cocktail is found to potently neutralize authentic SARS-CoV-2 infection in vitro with half inhibitory concentration (IC50) of 12 ng/mL and effectively treat SARS-CoV-2-infected mice even when administered at as late as 24 h post-infection. We determine an ensemble of cryo-EM structures of 2H2 or 3C1 Fab in complex with the S trimer up to 3.8 Å resolution, revealing the conformational space of the antigen-antibody complexes and MAb-triggered stepwise allosteric rearrangements of the S trimer, delineating a previously uncharacterized dynamic process of coordinated binding of neutralizing antibodies to the trimeric S protein. Our findings provide important information for the development of MAb-based drugs for preventing and treating SARS-CoV-2 infections.
History
DepositionOct 27, 2020-
Header (metadata) releaseDec 2, 2020-
Map releaseDec 2, 2020-
UpdateMar 10, 2021-
Current statusMar 10, 2021Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 1.1
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 1.1
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7dd2
  • Surface level: 1.1
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_30642.png

Downloads & links

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Map

FileDownload / File: emd_30642.map.gz / Format: CCP4 / Size: 421.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.02 Å
Density
Contour LevelBy AUTHOR: 0.9 / Movie #1: 1.1
Minimum - Maximum-1.4343752 - 2.6309412
Average (Standard dev.)0.007042707 (±0.09350412)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions480480480
Spacing480480480
CellA=B=C: 489.59998 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.021.021.02
M x/y/z480480480
origin x/y/z0.0000.0000.000
length x/y/z489.600489.600489.600
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ360360360
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS480480480
D min/max/mean-1.4342.6310.007

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Supplemental data

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Sample components

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Entire : Complex of SARS-Cov2-S protein with 3C1 fab, two RBDs are up and ...

EntireName: Complex of SARS-Cov2-S protein with 3C1 fab, two RBDs are up and one RBD is down, only the two up RBDs bind with a 3C1 fab
Components
  • Complex: Complex of SARS-Cov2-S protein with 3C1 fab, two RBDs are up and one RBD is down, only the two up RBDs bind with a 3C1 fab
    • Complex: SARS-Cov2-S protein
      • Protein or peptide: Spike glycoproteinSpike protein
    • Complex: 3C1 fab with a heavy chain and a light chain
      • Protein or peptide: The heavy chain of 3C1 fab
      • Protein or peptide: The light chain of 3C1 fab

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Supramolecule #1: Complex of SARS-Cov2-S protein with 3C1 fab, two RBDs are up and ...

SupramoleculeName: Complex of SARS-Cov2-S protein with 3C1 fab, two RBDs are up and one RBD is down, only the two up RBDs bind with a 3C1 fab
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2

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Supramolecule #2: SARS-Cov2-S protein

SupramoleculeName: SARS-Cov2-S protein / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1
Source (natural)Organism: Mus musculus (house mouse) / Strain: Balb/C

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Supramolecule #3: 3C1 fab with a heavy chain and a light chain

SupramoleculeName: 3C1 fab with a heavy chain and a light chain / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2-#3

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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: 140.055906 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MFVFLVLLPL VSSQCVNLTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIHV SGTNGTKRFD NPVLPFNDG VYFASTEKSN IIRGWIFGTT LDSKTQSLLI VNNATNVVIK VCEFQFCNDP FLGVYYHKNN KSWMESEFRV Y SSANNCTF ...String:
MFVFLVLLPL VSSQCVNLTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIHV SGTNGTKRFD NPVLPFNDG VYFASTEKSN IIRGWIFGTT LDSKTQSLLI VNNATNVVIK VCEFQFCNDP FLGVYYHKNN KSWMESEFRV Y SSANNCTF EYVSQPFLMD LEGKQGNFKN LREFVFKNID GYFKIYSKHT PINLVRDLPQ GFSALEPLVD LPIGINITRF QT LLALHRS YLTPGDSSSG WTAGAAAYYV GYLQPRTFLL KYNENGTITD AVDCALDPLS ETKCTLKSFT VEKGIYQTSN FRV QPTESI VRFPNITNLC PFGEVFNATR FASVYAWNRK RISNCVADYS VLYNSASFST FKCYGVSPTK LNDLCFTNVY ADSF VIRGD EVRQIAPGQT GKIADYNYKL PDDFTGCVIA WNSNNLDSKV GGNYNYLYRL FRKSNLKPFE RDISTEIYQA GSTPC NGVE GFNCYFPLQS YGFQPTNGVG YQPYRVVVLS FELLHAPATV CGPKKSTNLV KNKCVNFNFN GLTGTGVLTE SNKKFL PFQ QFGRDIADTT DAVRDPQTLE ILDITPCSFG GVSVITPGTN TSNQVAVLYQ DVNCTEVPVA IHADQLTPTW RVYSTGS NV FQTRAGCLIG AEHVNNSYEC DIPIGAGICA SYQTQTNSPG SASSVASQSI IAYTMSLGAE NSVAYSNNSI AIPTNFTI S VTTEILPVSM TKTSVDCTMY ICGDSTECSN LLLQYGSFCT QLNRALTGIA VEQDKNTQEV FAQVKQIYKT PPIKDFGGF NFSQILPDPS KPSKRSFIED LLFNKVTLAD AGFIKQYGDC LGDIAARDLI CAQKFNGLTV LPPLLTDEMI AQYTSALLAG TITSGWTFG AGAALQIPFA MQMAYRFNGI GVTQNVLYEN QKLIANQFNS AIGKIQDSLS STASALGKLQ DVVNQNAQAL N TLVKQLSS NFGAISSVLN DILSRLDPPE AEVQIDRLIT GRLQSLQTYV TQQLIRAAEI RASANLAATK MSECVLGQSK RV DFCGKGY HLMSFPQSAP HGVVFLHVTY VPAQEKNFTT APAICHDGKA HFPREGVFVS NGTHWFVTQR NFYEPQIITT DNT FVSGNC DVVIGIVNNT VYDPLQPELD SFKEELDKYF KNHTSPDVDL GDISGINASV VNIQKEIDRL NEVAKNLNES LIDL QELGK YEQGSGYIPE APRDGQAYVR KDGEWVLLST FLENLYFQGD YKDDDDKHHH HHHHHH

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Macromolecule #2: The heavy chain of 3C1 fab

MacromoleculeName: The heavy chain of 3C1 fab / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse) / Strain: Balb/C
Molecular weightTheoretical: 24.151785 KDa
SequenceString: EVQLQESGPS LVKPSQTLSL TCSVTGDSIT NGYWNWIRKF PGNKLEYMGY ISYSGSTYYS PSLKSRISIT RDTSKNQHYL QLNSVTSED TATYYCASDY HGSKYYFDYW GQGTTLTVSS AKTTPPSVYP LAPGSAAQTN SMVTLGCLVK GYFPEPVTVT W NSGSLSSG ...String:
EVQLQESGPS LVKPSQTLSL TCSVTGDSIT NGYWNWIRKF PGNKLEYMGY ISYSGSTYYS PSLKSRISIT RDTSKNQHYL QLNSVTSED TATYYCASDY HGSKYYFDYW GQGTTLTVSS AKTTPPSVYP LAPGSAAQTN SMVTLGCLVK GYFPEPVTVT W NSGSLSSG VHTFPAVLQS DLYTLSSSVT VPSSTWPSET VTCNVAHPAS STKVDKKIVP RDCG

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Macromolecule #3: The light chain of 3C1 fab

MacromoleculeName: The light chain of 3C1 fab / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse) / Strain: Balb/C
Molecular weightTheoretical: 23.89133 KDa
SequenceString: DIVMTQSHKF MSTSVGHRVS ITCKASQDVG NDVAWYQQKP GQSPKLLIYW ASTRHTGVPD RFTGSGSGTD FTLTISNVQS EDLADYFCQ QYNRYPYTFG GGTKLEIKRA DAAPTVSIFP PSSEQLTSGG ASVVCFLNNF YPKDINVKWK IDGSERQNGV L NSWTDQDS ...String:
DIVMTQSHKF MSTSVGHRVS ITCKASQDVG NDVAWYQQKP GQSPKLLIYW ASTRHTGVPD RFTGSGSGTD FTLTISNVQS EDLADYFCQ QYNRYPYTFG GGTKLEIKRA DAAPTVSIFP PSSEQLTSGG ASVVCFLNNF YPKDINVKWK IDGSERQNGV L NSWTDQDS KDSTYSMSST LTLTKDEYER HNSYTCEATH KTSTSPIVKS FNRNEC

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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

BufferpH: 7.5
Component:
ConcentrationFormulaName
20.0 mMTris-HClTris
200.0 mMNaClSodium chloridesodium Chloride
4.0 %Glycerol
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 49.6 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionResolution.type: BY AUTHOR / Resolution: 5.6 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 31143

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