5ZHG

Human group C rotavirus VP8*s recognize type A histo-blood group antigens as ligands


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.181 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Human Group C Rotavirus VP8*s Recognize Type A Histo-Blood Group Antigens as Ligands.

Sun, X.Wang, L.Qi, J.Li, D.Wang, M.Cong, X.Peng, R.Chai, W.Zhang, Q.Wang, H.Wen, H.Gao, G.F.Tan, M.Duan, Z.

(2018) J Virol 92

  • DOI: 10.1128/JVI.00442-18
  • Primary Citation of Related Structures:  
    5ZHO, 5ZHG

  • PubMed Abstract: 
  • Group/species C rotaviruses (RVCs) have been identified as important pathogens of acute gastroenteritis (AGE) in children, family-based outbreaks, as well as animal infections. However, little is known regarding their host-specific interaction, infection, and pathogenesis ...

    Group/species C rotaviruses (RVCs) have been identified as important pathogens of acute gastroenteritis (AGE) in children, family-based outbreaks, as well as animal infections. However, little is known regarding their host-specific interaction, infection, and pathogenesis. In this study, we performed serial studies to characterize the function and structural features of a human G4P[2] RVC VP8* that is responsible for the host receptor interaction. Glycan microarrays demonstrated that the human RVC VP8* recognizes type A histo-blood group antigens (HBGAs), which was confirmed by synthetic glycan-/saliva-based binding assays and hemagglutination of red blood cells, establishing a paradigm of RVC VP8*-glycan interactions. Furthermore, the high-resolution crystal structure of the human RVC VP8* was solved, showing a typical galectin-like structure consisting of two β-sheets but with significant differences from cogent proteins of group A rotaviruses (RVAs). The VP8* in complex with a type A trisaccharide displays a novel ligand binding site that consists of a particular set of amino acid residues of the C-D, G-H, and K-L loops. RVC VP8* interacts with type A HBGAs through a unique mechanism compared with that used by RVAs. Our findings shed light on the host-virus interaction and the coevolution of RVCs and will facilitate the development of specific antivirals and vaccines. IMPORTANCE Group/species C rotaviruses (RVCs), members of Reoviridae family, infect both humans and animals, but our knowledge about the host factors that control host susceptibility and specificity is rudimentary. In this work, we characterized the glycan binding specificity and structural basis of a human RVC that recognizes type A HBGAs. We found that human RVC VP8*, the rotavirus host ligand binding domain that shares only ∼15% homology with the VP8* domains of RVAs, recognizes type A HBGA at an as-yet-unknown glycan binding site through a mechanism distinct from that used by RVAs. Our new advancements provide insights into RVC-cell attachment, the critical step of virus infection, which will in turn help the development of control and prevention strategies against RVs.


    Organizational Affiliation

    National Institute for Viral Disease Control and Prevention, China CDC, Beijing, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Outer capsid protein VP8* A162Human rotavirus C/BristolMutation(s): 0 
Find proteins for Q82040 (Rotavirus C (isolate RVC/Human/United Kingdom/Bristol/1989))
Explore Q82040 
Go to UniProtKB:  Q82040
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.181 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 38.065α = 90
b = 40.07β = 90
c = 124.014γ = 90
Software Package:
Software NamePurpose
HKL-2000data scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2018-03-13 
  • Released Date: 2018-04-11 
  • Deposition Author(s): Sun, X., Duan, Z.

Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina81472003; 31500139;81601813

Revision History  (Full details and data files)

  • Version 1.0: 2018-04-11
    Type: Initial release
  • Version 1.1: 2018-06-06
    Changes: Data collection, Database references