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- EMDB-16480: Structure of the SARS-CoV-2 spike glycoprotein in complex with th... -

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Basic information

Entry
Database: EMDB / ID: EMD-16480
TitleStructure of the SARS-CoV-2 spike glycoprotein in complex with the 10D12 heavy-chain-only antibody (3 RBDs up)
Map dataSharpened map
Sample
  • Complex: SARS-CoV-2 spike glycoprotein in complex with the 10D12 heavy-chain-only antibody
    • Protein or peptide: SARS-CoV-2 spike glycoprotein
    • Protein or peptide: Heavy-chain-only antibody 10D12
KeywordsComplex / Spike / Glycoprotein / Antibody / VIRAL PROTEIN
Biological speciesSevere acute respiratory syndrome coronavirus 2 / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsSerna Martin I / Hurdiss DL
Funding support Netherlands, 2 items
OrganizationGrant numberCountry
Health-HollandLSHM20037 Netherlands
Netherlands Organisation for Scientific Research (NWO)184.034.014 Netherlands
CitationJournal: Front Immunol / Year: 2023
Title: Avidity engineering of human heavy-chain-only antibodies mitigates neutralization resistance of SARS-CoV-2 variants.
Authors: Wenjuan Du / Rick Janssens / Anna Z Mykytyn / Wentao Li / Dubravka Drabek / Rien van Haperen / Marianthi Chatziandreou / Melanie Rissmann / Joline van der Lee / Melissa van Dortmondt / ...Authors: Wenjuan Du / Rick Janssens / Anna Z Mykytyn / Wentao Li / Dubravka Drabek / Rien van Haperen / Marianthi Chatziandreou / Melanie Rissmann / Joline van der Lee / Melissa van Dortmondt / Itziar Serna Martin / Frank J M van Kuppeveld / Daniel L Hurdiss / Bart L Haagmans / Frank Grosveld / Berend-Jan Bosch /
Abstract: Emerging SARS-CoV-2 variants have accrued mutations within the spike protein rendering most therapeutic monoclonal antibodies against COVID-19 ineffective. Hence there is an unmet need for broad- ...Emerging SARS-CoV-2 variants have accrued mutations within the spike protein rendering most therapeutic monoclonal antibodies against COVID-19 ineffective. Hence there is an unmet need for broad-spectrum mAb treatments for COVID-19 that are more resistant to antigenically drifted SARS-CoV-2 variants. Here we describe the design of a biparatopic heavy-chain-only antibody consisting of six antigen binding sites recognizing two distinct epitopes in the spike protein NTD and RBD. The hexavalent antibody showed potent neutralizing activity against SARS-CoV-2 and variants of concern, including the Omicron sub-lineages BA.1, BA.2, BA.4 and BA.5, whereas the parental components had lost Omicron neutralization potency. We demonstrate that the tethered design mitigates the substantial decrease in spike trimer affinity seen for escape mutations for the hexamer components. The hexavalent antibody protected against SARS-CoV-2 infection in a hamster model. This work provides a framework for designing therapeutic antibodies to overcome antibody neutralization escape of emerging SARS-CoV-2 variants.
History
DepositionJan 20, 2023-
Header (metadata) releaseFeb 22, 2023-
Map releaseFeb 22, 2023-
UpdateDec 13, 2023-
Current statusDec 13, 2023Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_16480.png

Downloads & links

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Map

FileDownload / File: emd_16480.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationSharpened map
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.11 Å/pix.
x 300 pix.
= 334.41 Å		1.11 Å/pix.
x 300 pix.
= 334.41 Å		1.11 Å/pix.
x 300 pix.
= 334.41 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.1147 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.235
Minimum - Maximum-2.2897136 - 3.169269
Average (Standard dev.)0.0016460426 (±0.061564717)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions300300300
Spacing300300300
CellA=B=C: 334.40997 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_16480_msk_1.map
Projections & Slices
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Additional map: Unsharpened map

Fileemd_16480_additional_1.map
AnnotationUnsharpened map
Projections & Slices
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Half map: Half map A

Fileemd_16480_half_map_1.map
AnnotationHalf map A
Projections & Slices
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Histogram

Histogram (log scale)

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Half map: Half map B

Fileemd_16480_half_map_2.map
AnnotationHalf map B
Projections & Slices
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Sample components

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Entire : SARS-CoV-2 spike glycoprotein in complex with the 10D12 heavy-cha...

EntireName: SARS-CoV-2 spike glycoprotein in complex with the 10D12 heavy-chain-only antibody
Components
  • Complex: SARS-CoV-2 spike glycoprotein in complex with the 10D12 heavy-chain-only antibody
    • Protein or peptide: SARS-CoV-2 spike glycoprotein
    • Protein or peptide: Heavy-chain-only antibody 10D12

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Supramolecule #1: SARS-CoV-2 spike glycoprotein in complex with the 10D12 heavy-cha...

SupramoleculeName: SARS-CoV-2 spike glycoprotein in complex with the 10D12 heavy-chain-only antibody
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all

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Macromolecule #1: SARS-CoV-2 spike glycoprotein

MacromoleculeName: SARS-CoV-2 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 NVTWFHAIHV SGTNGTKRFD NPVLPFNDGV YFASTEKSNI IRGWIFGTTL DSKTQSLLIV NNATNVVIKV CEFQFCNDPF LGVYYHKNNK SWMESEFRVY SSANNCTFEY ...String:
MFVFLVLLPL VSSQCVNLTT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIHV SGTNGTKRFD NPVLPFNDGV YFASTEKSNI IRGWIFGTTL DSKTQSLLIV NNATNVVIKV CEFQFCNDPF LGVYYHKNNK SWMESEFRVY SSANNCTFEY VSQPFLMDLE GKQGNFKNLR EFVFKNIDGY FKIYSKHTPI NLVRDLPQGF SALEPLVDLP IGINITRFQT LLALHRSYLT PGDSSSGWTA GAAAYYVGYL QPRTFLLKYN ENGTITDAVD CALDPLSETK CTLKSFTVEK GIYQTSNFRV QPTESIVRFP NITNLCPFGE VFNATRFASV YAWNRKRISN CVADYSVLYN SASFSTFKCY GVSPTKLNDL CFTNVYADSF VIRGDEVRQI APGQTGKIAD YNYKLPDDFT GCVIAWNSNN LDSKVGGNYN YLYRLFRKSN LKPFERDIST EIYQAGSTPC NGVEGFNCYF PLQSYGFQPT NGVGYQPYRV VVLSFELLHA PATVCGPKKS TNLVKNKCVN FNFNGLTGTG VLTESNKKFL PFQQFGRDIA DTTDAVRDPQ TLEILDITPC SFGGVSVITP GTNTSNQVAV LYQDVNCTEV PVAIHADQLT PTWRVYSTGS NVFQTRAGCL IGAEHVNNSY ECDIPIGAGI CASYQTQTNS PAAARSVASQ SIIAYTMSLG AENSVAYSNN SIAIPTNFTI SVTTEILPVS MTKTSVDCTM YICGDSTECS NLLLQYGSFC TQLNRALTGI AVEQDKNTQE VFAQVKQIYK TPPIKDFGGF NFSQILPDPS KPSKRSPIED LLFNKVTLAD AGFIKQYGDC LGDIAARDLI CAQKFNGLTV LPPLLTDEMI AQYTSALLAG TITSGWTFGA GPALQIPFPM QMAYRFNGIG VTQNVLYENQ KLIANQFNSA IGKIQDSLSS TPSALGKLQD VVNQNAQALN TLVKQLSSNF GAISSVLNDI LSRLDPPEAE VQIDRLITGR LQSLQTYVTQ QLIRAAEIRA SANLAATKMS ECVLGQSKRV DFCGKGYHLM SFPQSAPHGV VFLHVTYVPA QEKNFTTAPA ICHDGKAHFP REGVFVSNGT HWFVTQRNFY EPQIITTDNT FVSGNCDVVI GIVNNTVYDP LQPELDSFKE ELDKYFKNHT SPDVDLGDIS GINASVVNIQ KEIDRLNEVA KNLNESLIDL QELGKYEQGS GYIPEAPRDG QAYVRKDGEW VLLSTFLGRS LEVLFQGPGH HHHHHHHSAW SHPQFEKGGG SGGGGSGGSA WSHPQFEK

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Macromolecule #2: Heavy-chain-only antibody 10D12

MacromoleculeName: Heavy-chain-only antibody 10D12 / type: protein_or_peptide / ID: 2 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MEFGLSWLFL VAILKGVQCE VQLVETGGGL IQPGGSLRLS CAVSGFTVSL NYMSWVRQAP GKGLEWVSSI YSGGSTFYAD SVKGRFTISR DNSKNTLYLQ MNSLRAEDTA VYYCARGLGF GELPPFDFWG QGTLVTVSSE PKSCDKTHTC PPCPAPELLG GPSVFLFPPK ...String:
MEFGLSWLFL VAILKGVQCE VQLVETGGGL IQPGGSLRLS CAVSGFTVSL NYMSWVRQAP GKGLEWVSSI YSGGSTFYAD SVKGRFTISR DNSKNTLYLQ MNSLRAEDTA VYYCARGLGF GELPPFDFWG QGTLVTVSSE PKSCDKTHTC PPCPAPELLG GPSVFLFPPK PKDTLMISRT PEVTCVVVDV SHEDPEVKFN WYVDGVEVHN AKTKPREEQY NSTYRVVSVL TVLHQDWLNG KEYKCKVSNK ALPAPIEKTI SKAKGQPREP QVYTLPPSRE EMTKNQVSLT CLVKGFYPSD IAVEWESNGQ PENNYKTTPP VLDSDGSFFL YSKLTVDKSR WQQGNVFSCS VMHEALHNHY TQKSLSLSPG K

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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: 8 / Details: 20 mM Tris pH 8, 150 mM NaCl.
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 200 / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2.4 µm / Nominal defocus min: 0.6 µm / Nominal magnification: 105000
Specialist opticsEnergy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number grids imaged: 1 / Number real images: 5018 / Average electron dose: 50.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 1215409
Startup modelType of model: OTHER / Details: ab initio
Initial angle assignmentType: RANDOM ASSIGNMENT / Software - Name: cryoSPARC
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC
Final reconstructionApplied symmetry - Point group: C3 (3 fold cyclic) / Resolution.type: BY AUTHOR / Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 76744
FSC plot (resolution estimation)

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