5O14

Co-crystal structure of a cross-reactive bactericidal human antibody targeting meningococcal vaccine antigen factor H binding protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.195 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure reveals vaccine elicited bactericidal human antibody targeting a conserved epitope on meningococcal fHbp.

Lopez-Sagaseta, J.Beernink, P.T.Bianchi, F.Santini, L.Frigimelica, E.Lucas, A.H.Pizza, M.Bottomley, M.J.

(2018) Nat Commun 9: 528-528

  • DOI: 10.1038/s41467-018-02827-7
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Data obtained recently in the United Kingdom following a nationwide infant immunization program against serogroup B Neisseria meningitidis (MenB) reported >80% 4CMenB vaccine-mediated protection. Factor H-binding protein (fHbp) is a meningococcal vir ...

    Data obtained recently in the United Kingdom following a nationwide infant immunization program against serogroup B Neisseria meningitidis (MenB) reported >80% 4CMenB vaccine-mediated protection. Factor H-binding protein (fHbp) is a meningococcal virulence factor and a component of two new MenB vaccines. Here, we investigated the structural bases underlying the fHbp-dependent protective antibody response in humans, which might inform future antigen design efforts. We present the co-crystal structure of a human antibody Fab targeting fHbp. The vaccine-elicited Fab 1A12 is cross-reactive and targets an epitope highly conserved across the repertoire of three naturally occurring fHbp variants. The free Fab structure highlights conformational rearrangements occurring upon antigen binding. Importantly, 1A12 is bactericidal against MenB strains expressing fHbp from all three variants. Our results reveal important immunological features potentially contributing to the broad protection conferred by fHbp vaccination. Our studies fuel the rationale of presenting conserved protein epitopes when developing broadly protective vaccines.


    Organizational Affiliation

    GSK Vaccines srl, Via Fiorentina 1, 53100, Siena, Italy. jlopez.sagaseta@gmail.com.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Factor H binding protein variant 1.1
A, B
257Neisseria meningitidis serogroup B (strain MC58)Mutation(s): 0 
Find proteins for Q9JXV4 (Neisseria meningitidis serogroup B (strain MC58))
Go to UniProtKB:  Q9JXV4
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Fab 1A12 Heavy Chain
C, H
235N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Fab 1A12 Light Chain
D, L
217N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
C, H
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
EDO
Query on EDO

Download SDF File 
Download CCD File 
A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.195 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.192 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 42.822α = 90.00
b = 163.951β = 97.70
c = 110.656γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
PHASERphasing
XDSdata reduction
Aimlessdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2017-05-18 
  • Released Date: 2018-02-14 
  • Deposition Author(s): Lopez-Sagaseta, J.

Funding OrganizationLocationGrant Number
European UnionItaly659615

Revision History 

  • Version 1.0: 2018-02-14
    Type: Initial release
  • Version 1.1: 2018-02-21
    Type: Database references