6B0E

Crystal structure of Pfs25 in complex with the transmission blocking antibody 1260


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.230 
  • R-Value Observed: 0.233 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Molecular definition of multiple sites of antibody inhibition of malaria transmission-blocking vaccine antigen Pfs25.

Scally, S.W.McLeod, B.Bosch, A.Miura, K.Liang, Q.Carroll, S.Reponen, S.Nguyen, N.Giladi, E.Ramisch, S.Yusibov, V.Bradley, A.Lemiale, F.Schief, W.R.Emerling, D.Kellam, P.King, C.R.Julien, J.P.

(2017) Nat Commun 8: 1568-1568

  • DOI: 10.1038/s41467-017-01924-3
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The Plasmodium falciparum Pfs25 protein (Pfs25) is a leading malaria transmission-blocking vaccine antigen. Pfs25 vaccination is intended to elicit antibodies that inhibit parasite development when ingested by Anopheles mosquitoes during blood meals. ...

    The Plasmodium falciparum Pfs25 protein (Pfs25) is a leading malaria transmission-blocking vaccine antigen. Pfs25 vaccination is intended to elicit antibodies that inhibit parasite development when ingested by Anopheles mosquitoes during blood meals. The Pfs25 three-dimensional structure has remained elusive, hampering a molecular understanding of its function and limiting immunogen design. We report six crystal structures of Pfs25 in complex with antibodies elicited by immunization via Pfs25 virus-like particles in human immunoglobulin loci transgenic mice. Our structural findings reveal the fine specificities associated with two distinct immunogenic sites on Pfs25. Importantly, one of these sites broadly overlaps with the epitope of the well-known 4B7 mouse antibody, which can be targeted simultaneously by antibodies that target a non-overlapping site to additively increase parasite inhibition. Our molecular characterization of inhibitory antibodies informs on the natural disposition of Pfs25 on the surface of ookinetes and provides the structural blueprints to design next-generation immunogens.


    Organizational Affiliation

    Department of Immunology, University of Toronto, 1 King's College Circle, Toronto, ON, Canada, M5S 1A8. jean-philippe.julien@sickkids.ca.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
1260 antibody, light chain
A
219Homo sapiensMutation(s): 0 
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
1260 antibody, heavy chain
B
227Homo sapiensMutation(s): 0 
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
25 kDa ookinete surface antigen
E
183Plasmodium falciparum NF54Mutation(s): 3 
Find proteins for P13829 (Plasmodium falciparum (isolate NF54))
Go to UniProtKB:  P13829
Protein Feature View
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.230 
  • R-Value Observed: 0.233 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.223α = 90
b = 79.635β = 90.91
c = 78.065γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XPREPdata scaling
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-11-15
    Type: Initial release
  • Version 1.1: 2017-11-29
    Changes: Database references