6ROW

Haemonchus galactose containing glycoprotein complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of the protective nematode protease complex H-gal-GP and its conservation across roundworm parasites.

Scarff, C.A.Thompson, R.F.Newlands, G.F.J.Jamson, A.H.Kennaway, C.da Silva, V.J.Rabelo, E.M.Song, C.F.Trinick, J.Smith, W.D.Muench, S.P.

(2020) PLoS Pathog 16: e1008465-e1008465

  • DOI: https://doi.org/10.1371/journal.ppat.1008465
  • Primary Citation of Related Structures:  
    6ROW

  • PubMed Abstract: 

    Roundworm parasite infections are a major cause of human and livestock disease worldwide and a threat to global food security. Disease control currently relies on anthelmintic drugs to which roundworms are becoming increasingly resistant. An alternative approach is control by vaccination and 'hidden antigens', components of the worm gut not encountered by the infected host, have been exploited to produce Barbervax, the first commercial vaccine for a gut dwelling nematode of any host. Here we present the structure of H-gal-GP, a hidden antigen from Haemonchus contortus, the Barber's Pole worm, and a major component of Barbervax. We demonstrate its novel architecture, subunit composition and topology, flexibility and heterogeneity using cryo-electron microscopy, mass spectrometry, and modelling. Importantly, we demonstrate that complexes with the same architecture are present in other Strongylid roundworm parasites including human hookworm. This suggests a common ancestry and the potential for development of a unified hidden antigen vaccine.


  • Organizational Affiliation

    School of Molecular and Cellular Biology, Faculty of Biological Sciences & Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Putative zinc metallopeptidase
A, B, C, D
755Haemonchus contortusMutation(s): 0 
UniProt
Find proteins for O76751 (Haemonchus contortus)
Explore O76751 
Go to UniProtKB:  O76751
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO76751
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Parasite pepsinogen
E, F
369Haemonchus contortusMutation(s): 0 
UniProt
Find proteins for Q25037 (Haemonchus contortus)
Explore Q25037 
Go to UniProtKB:  Q25037
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ25037
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Cysteine Protease253Haemonchus contortusMutation(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: 4.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONRELION3.0

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom204825/Z/16/Z
Wellcome TrustUnited Kingdom096685/Z/11/Z
Wellcome TrustUnited Kingdom108466/Z/15/Z

Revision History  (Full details and data files)

  • Version 1.0: 2020-03-25
    Type: Initial release
  • Version 1.1: 2020-04-22
    Changes: Database references
  • Version 1.2: 2024-11-06
    Changes: Data collection, Database references, Structure summary