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Structural basis of glycan specificity of P[19] VP8*: Implications for rotavirus zoonosis and evolution

Journal Article · · PLoS Pathogens
 [1];  [2];  [2];  [3];  [4];  [2];  [4];
  1. Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China, Division of Infectious Diseases, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States of America; DOE/OSTI
  2. Miami University, Oxford, OH (United States). Department of Chemistry and Biochemistry
  3. Cincinnati Children’s Hospital Medical Center, Cincinnati, OH (United States). Division of Infectious Diseases
  4. Division of Infectious Diseases, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, United States of America, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America
Recognition of specific cell surface glycans, mediated by the VP8* domain of the spike protein VP4, is the essential first step in rotavirus (RV) infection. Due to lack of direct structural information of virus-ligand interactions, the molecular basis of ligand-controlled host ranges of the major human RVs (P[8] and P[4]) in P[II] genogroup remains unknown. Here, through characterization of a minor P[II] RV (P[19]) that can infect both animals (pigs) and humans, we made an important advance to fill this knowledge gap by solving the crystal structures of the P[19] VP8* in complex with its ligands. Our data showed that P[19] RVs use a novel binding site that differs from the known ones of other genotypes/genogroups. This binding site is capable of interacting with two types of glycans, the mucin core and type 1 histo-blood group antigens (HBGAs) with a common GlcNAc as the central binding saccharide. The binding site is apparently shared by other P[II] RVs and possibly two genotypes (P[10] and P[12]) in P[I] as shown by their highly conserved GlcNAc-interacting residues. These data provide strong evidence of evolutionary connections among these human and animal RVs, pointing to a common ancestor in P[I] with a possible animal host origin. While the binding properties to GlcNAc-containing saccharides are maintained, changes in binding to additional residues, such as those in the polymorphic type 1 HBGAs may occur in the course of RV evolution, explaining the complex P[II] genogroup that mainly causes diseases in humans but also in some animals.
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1627915
Journal Information:
PLoS Pathogens, Journal Name: PLoS Pathogens Journal Issue: 11 Vol. 13; ISSN 1553-7374
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (5)

Glycan recognition in globally dominant human rotaviruses journal July 2018
Unraveling the role of the secretor antigen in human rotavirus attachment to histo-blood group antigens journal June 2019
Structural Basis of Glycan Recognition in Globally Predominant Human P[8] Rotavirus journal October 2019
Saliva as a source of reagent to study human susceptibility to avian influenza H7N9 virus infection journal September 2018
Conformations of the type-1 lacto- N -biose I unit in protein complex structures journal July 2018

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