8OWV

H6 and F2 nanobodies bound to SARS-CoV-2 spike RBD


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.73 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.197 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Structural and functional characterization of nanobodies that neutralize Omicron variants of SARS-CoV-2.

Cornish, K.Huo, J.Jones, L.Sharma, P.Thrush, J.W.Abdelkarim, S.Kipar, A.Ramadurai, S.Weckener, M.Mikolajek, H.Liu, S.Buckle, I.Bentley, E.Kirby, A.Han, X.Laidlaw, S.M.Hill, M.Eyssen, L.Norman, C.Le Bas, A.Clarke, J.James, W.Stewart, J.P.Carroll, M.Naismith, J.H.Owens, R.J.

(2024) Open Biol 14: 230252-230252

  • DOI: https://doi.org/10.1098/rsob.230252
  • Primary Citation of Related Structures:  
    8OWT, 8OWV, 8OWW, 8OYT, 8OYU

  • PubMed Abstract: 

    The Omicron strains of SARS-CoV-2 pose a significant challenge to the development of effective antibody-based treatments as immune evasion has compromised most available immune therapeutics. Therefore, in the 'arms race' with the virus, there is a continuing need to identify new biologics for the prevention or treatment of SARS-CoV-2 infections. Here, we report the isolation of nanobodies that bind to the Omicron BA.1 spike protein by screening nanobody phage display libraries previously generated from llamas immunized with either the Wuhan or Beta spike proteins. The structure and binding properties of three of these nanobodies (A8, H6 and B5-5) have been characterized in detail providing insight into their binding epitopes on the Omicron spike protein. Trimeric versions of H6 and B5-5 neutralized the SARS-CoV-2 variant of concern BA.5 both in vitro and in the hamster model of COVID-19 following nasal administration. Thus, either alone or in combination could serve as starting points for the development of new anti-viral immunotherapeutics.


  • Organizational Affiliation

    Structural Biology, The Rosalind Franklin Institute, Harwell Science Campus , Didcot, UK.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Spike protein S1A [auth EEE]209Severe acute respiratory syndrome coronavirus 2Mutation(s): 2 
Gene Names: S2
UniProt
Find proteins for P0DTC2 (Severe acute respiratory syndrome coronavirus 2)
Explore P0DTC2 
Go to UniProtKB:  P0DTC2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0DTC2
Glycosylation
Glycosylation Sites: 1Go to GlyGen: P0DTC2-1
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
F2B [auth BBB]132Lama glamaMutation(s): 0 
Entity Groups  
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Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
H6C [auth FFF]133Lama glamaMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.73 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.197 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 57.775α = 90
b = 59.438β = 90
c = 145.624γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
xia2data reduction
DIALSdata scaling
PHASERphasing
Cootmodel building

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom223733/Z/21/Z

Revision History  (Full details and data files)

  • Version 1.0: 2024-05-08
    Type: Initial release
  • Version 1.1: 2024-06-19
    Changes: Database references, Source and taxonomy, Structure summary
  • Version 1.2: 2024-10-09
    Changes: Structure summary