6MB3

Cryo-EM structure of the circumsporozoite protein of Plasmodium falciparum with a vaccine-elicited antibody reveals maturation of inter-antibody contacts


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.37 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


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Literature

Cryo-EM structure ofP. falciparumcircumsporozoite protein with a vaccine-elicited antibody is stabilized by somatically mutated inter-Fab contacts.

Oyen, D.Torres, J.L.Cottrell, C.A.Richter King, C.Wilson, I.A.Ward, A.B.

(2018) Sci Adv 4: eaau8529-eaau8529

  • DOI: 10.1126/sciadv.aau8529
  • Primary Citation of Related Structures:  
    6MB3, 6MHG

  • PubMed Abstract: 
  • The circumsporozoite protein (CSP) on the surface of Plasmodium falciparum sporozoites is important for parasite development, motility, and host hepatocyte invasion. However, intrinsic disorder of the NANP repeat sequence in the central region of CSP has hindered its structural and functional characterization ...

    The circumsporozoite protein (CSP) on the surface of Plasmodium falciparum sporozoites is important for parasite development, motility, and host hepatocyte invasion. However, intrinsic disorder of the NANP repeat sequence in the central region of CSP has hindered its structural and functional characterization. Here, the cryo-electron microscopy structure at ~3.4-Å resolution of a recombinant shortened CSP construct with the variable domains (Fabs) of a highly protective monoclonal antibody reveals an extended spiral conformation of the central NANP repeat region surrounded by antibodies. This unusual structure appears to be stabilized and/or induced by interaction with an antibody where contacts between adjacent Fabs are somatically mutated and enhance the interaction. This maturation in non-antigen contact residues may be an effective mechanism for antibodies to target tandem repeat sequences and provide novel insights into malaria vaccine design.


    Organizational Affiliation

    Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Plasmodium falciparum recombinant shortened CSPA [auth E]278Plasmodium falciparumMutation(s): 0 
UniProt
Find proteins for Q7K740 (Plasmodium falciparum (isolate 3D7))
Explore Q7K740 
Go to UniProtKB:  Q7K740
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Fab311 heavy chain225Homo sapiensMutation(s): 0 
UniProt
Find proteins for P0DOX5 (Homo sapiens)
Explore P0DOX5 
Go to UniProtKB:  P0DOX5
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Fab311 light chain218Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.37 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Bill & Melinda Gates FoundationUnited StatesOPP1170236

Revision History  (Full details and data files)

  • Version 1.0: 2018-10-31
    Type: Initial release