6PHB

Pfs25 in complex with the human transmission blocking antibody 2530

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.178 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

Potent antibody lineage against malaria transmission elicited by human vaccination with Pfs25.

McLeod, B., Miura, K., Scally, S.W., Bosch, A., Nguyen, N., Shin, H., Kim, D., Volkmuth, W., Ramisch, S., Chichester, J.A., Streatfield, S., Woods, C., Schief, W.R., Emerling, D., King, C.R., Julien, J.P.

(2019) Nat Commun 10: 4328-4328

  • DOI: https://doi.org/10.1038/s41467-019-11980-6
  • Primary Citation of Related Structures:  
    6PHB, 6PHC, 6PHD, 6PHF, 6PHG, 6PHH

  • PubMed Abstract: 

    • Transmission-blocking vaccines have the potential to be key contributors to malaria elimination. Such vaccines elicit antibodies that inhibit parasites during their development in Anopheles mosquitoes, thus breaking the cycle of transmission. To date, characterization of humoral responses to Plasmodium falciparum transmission-blocking vaccine candidate Pfs25 has largely been conducted in pre-clinical models ...

    Transmission-blocking vaccines have the potential to be key contributors to malaria elimination. Such vaccines elicit antibodies that inhibit parasites during their development in Anopheles mosquitoes, thus breaking the cycle of transmission. To date, characterization of humoral responses to Plasmodium falciparum transmission-blocking vaccine candidate Pfs25 has largely been conducted in pre-clinical models. Here, we present molecular analyses of human antibody responses generated in a clinical trial evaluating Pfs25 vaccination. From a collection of monoclonal antibodies with transmission-blocking activity, we identify the most potent transmission-blocking antibody yet described against Pfs25; 2544. The interactions of 2544 and three other antibodies with Pfs25 are analyzed by crystallography to understand structural requirements for elicitation of human transmission-blocking responses. Our analyses provide insights into Pfs25 immunogenicity and epitope potency, and detail an affinity maturation pathway for a potent transmission-blocking antibody in humans. Our findings can be employed to guide the design of improved malaria transmission-blocking vaccines.

    Organizational Affiliation: 

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



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
25 kDa ookinete surface antigenA [auth I],
D [auth E]		184Plasmodium falciparumMutation(s): 0 
UniProt
Find proteins for P13829 (Plasmodium falciparum (isolate NF54))
Explore P13829 
Go to UniProtKB:  P13829
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP13829
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
2530 Antibody Fab, Light ChainB [auth C],
E [auth A]		215Homo sapiensMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
2530 Antibody Fab, Heavy ChainC [auth D],
F [auth B]		220Homo sapiensMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.178 
  • Space Group: P 31
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 114.599α = 90
b = 114.599β = 90
c = 98.181γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing
PHENIXrefinement

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Bill & Melinda Gates FoundationCanadaOPP1108403

Revision History  (Full details and data files)

  • Version 1.0: 2019-10-02
    Type: Initial release
  • Version 1.1: 2019-10-09
    Changes: Data collection, Database references