6MJZ

Cryo-EM structure of Human Parainfluenza Virus Type 3 (hPIV3) in complex with antibody PIA174


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure-based design of a quadrivalent fusion glycoprotein vaccine for human parainfluenza virus types 1-4.

Stewart-Jones, G.B.E.Chuang, G.Y.Xu, K.Zhou, T.Acharya, P.Tsybovsky, Y.Ou, L.Zhang, B.Fernandez-Rodriguez, B.Gilardi, V.Silacci-Fregni, C.Beltramello, M.Baxa, U.Druz, A.Kong, W.P.Thomas, P.V.Yang, Y.Foulds, K.E.Todd, J.P.Wei, H.Salazar, A.M.Scorpio, D.G.Carragher, B.Potter, C.S.Corti, D.Mascola, J.R.Lanzavecchia, A.Kwong, P.D.

(2018) Proc Natl Acad Sci U S A 115: 12265-12270

  • DOI: https://doi.org/10.1073/pnas.1811980115
  • Primary Citation of Related Structures:  
    6MJZ

  • PubMed Abstract: 

    Parainfluenza virus types 1-4 (PIV1-4) are highly infectious human pathogens, of which PIV3 is most commonly responsible for severe respiratory illness in newborns, elderly, and immunocompromised individuals. To obtain a vaccine effective against all four PIV types, we engineered mutations in each of the four PIV fusion (F) glycoproteins to stabilize their metastable prefusion states, as such stabilization had previously enabled the elicitation of high-titer neutralizing antibodies against the related respiratory syncytial virus. A cryoelectron microscopy structure of an engineered PIV3 F prefusion-stabilized trimer, bound to the prefusion-specific antibody PIA174, revealed atomic-level details for how introduced mutations improved stability as well as how a single PIA174 antibody recognized the trimeric apex of prefusion PIV3 F. Nine combinations of six newly identified disulfides and two cavity-filling mutations stabilized the prefusion PIV3 F immunogens and induced 200- to 500-fold higher neutralizing titers in mice than were elicited by PIV3 F in the postfusion conformation. For PIV1, PIV2, and PIV4, we also obtained stabilized prefusion Fs, for which prefusion versus postfusion titers were 2- to 20-fold higher. Elicited murine responses were PIV type-specific, with little cross-neutralization of other PIVs. In nonhuman primates (NHPs), quadrivalent immunization with prefusion-stabilized Fs from PIV1-4 consistently induced potent neutralizing responses against all four PIVs. For PIV3, the average elicited NHP titer from the quadrivalent immunization was more than fivefold higher than any titer observed in a cohort of over 100 human adults, highlighting the ability of a prefusion-stabilized immunogen to elicit especially potent neutralization.


  • Organizational Affiliation

    Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Fusion glycoprotein F0
A, B, C
495Human respirovirus 3Mutation(s): 6 
Gene Names: FKMQ_34898gpF
UniProt
Find proteins for A0A059QA82 (Human respirovirus 3)
Explore A0A059QA82 
Go to UniProtKB:  A0A059QA82
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A059QA82
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
PIA174 Fab Heavy chainD [auth H]221Homo sapiensMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
PIA174 Fab Light chainE [auth L]207Homo sapiensMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONcryoSPARC

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-11-14
    Type: Initial release
  • Version 1.1: 2018-11-28
    Changes: Data collection, Database references
  • Version 1.2: 2018-12-12
    Changes: Data collection, Database references
  • Version 1.3: 2019-12-18
    Changes: Other