6P91

Structure of Lassa virus glycoprotein bound to Fab 18.5C


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.00 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 

Starting Models: experimental
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Literature

Convergent Structures Illuminate Features for Germline Antibody Binding and Pan-Lassa Virus Neutralization.

Hastie, K.M.Cross, R.W.Harkins, S.S.Zandonatti, M.A.Koval, A.P.Heinrich, M.L.Rowland, M.M.Robinson, J.E.Geisbert, T.W.Garry, R.F.Branco, L.M.Saphire, E.O.

(2019) Cell 178: 1004-1015.e14

  • DOI: https://doi.org/10.1016/j.cell.2019.07.020
  • Primary Citation of Related Structures:  
    6P91, 6P95

  • PubMed Abstract: 

    Lassa virus (LASV) causes hemorrhagic fever and is endemic in West Africa. Protective antibody responses primarily target the LASV surface glycoprotein (GPC), and GPC-B competition group antibodies often show potent neutralizing activity in humans. However, which features confer potent and broadly neutralizing antibody responses is unclear. Here, we compared three crystal structures of LASV GPC complexed with GPC-B antibodies of varying neutralization potency. Each GPC-B antibody recognized an overlapping epitope involved in binding of two adjacent GPC monomers and preserved the prefusion trimeric conformation. Differences among GPC-antibody interactions highlighted specific residues that enhance neutralization. Using structure-guided amino acid substitutions, we increased the neutralization potency and breadth of these antibodies to include all major LASV lineages. The ability to define antibody residues that allow potent and broad neutralizing activity, together with findings from analyses of inferred germline precursors, is critical to develop potent therapeutics and for vaccine design and assessment.


  • Organizational Affiliation

    La Jolla Institute for Immunology, La Jolla, CA, USA; Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Pre-glycoprotein polyprotein GP complex257Mammarenavirus lassaenseMutation(s): 1 
Gene Names: GPGPC
UniProt
Find proteins for P08669 (Lassa virus (strain Mouse/Sierra Leone/Josiah/1976))
Explore P08669 
Go to UniProtKB:  P08669
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP08669
Glycosylation
Glycosylation Sites: 6
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Fab 18.5C Antibody heavy chainB [auth H]228Homo sapiensMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Fab 18.5C Antibody light chainC [auth L]217Homo sapiensMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Pre-glycoprotein polyprotein GP complex,Lassa virus glycoprotein, GP2 subunitD [auth a]200Mammarenavirus lassaenseMutation(s): 3 
Gene Names: GPGPC
UniProt
Find proteins for P08669 (Lassa virus (strain Mouse/Sierra Leone/Josiah/1976))
Explore P08669 
Go to UniProtKB:  P08669
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP08669
Glycosylation
Glycosylation Sites: 4
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 5
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseE [auth B],
K [auth I]
4N-Glycosylation
Glycosylation Resources
GlyTouCan:  G81315DD
GlyCosmos:  G81315DD
GlyGen:  G81315DD
Entity ID: 6
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseF [auth C],
G [auth D],
I [auth F],
J [auth G]
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Entity ID: 7
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseH [auth E],
L [auth J]
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE
GlyCosmos:  G15407YE
GlyGen:  G15407YE
Entity ID: 8
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranoseM [auth K]4N-Glycosylation
Glycosylation Resources
GlyTouCan:  G32152BH
GlyCosmos:  G32152BH
GlyGen:  G32152BH
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
N [auth a]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.00 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 
  • Space Group: I 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 231.66α = 90
b = 231.66β = 90
c = 231.66γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United States1U19-AI109762

Revision History  (Full details and data files)

  • Version 1.0: 2019-08-21
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Author supporting evidence, Data collection
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2023-10-11
    Changes: Data collection, Database references, Derived calculations, Refinement description, Structure summary