Elucidating the Implications of Norovirus N- and O-Glycosylation, O-GlcNAcylation, and Phosphorylation

Viruses. 2023 Mar 21;15(3):798. doi: 10.3390/v15030798.

Abstract

Norovirus is the most common cause of foodborne gastroenteritis, affecting millions of people worldwide annually. Among the ten genotypes (GI-GX) of norovirus, only GI, GII, GIV, GVIII, and GIX infect humans. Some genotypes reportedly exhibit post-translational modifications (PTMs), including N- and O-glycosylation, O-GlcNAcylation, and phosphorylation, in their viral antigens. PTMs have been linked to increased viral genome replication, viral particle release, and virulence. Owing to breakthroughs in mass spectrometry (MS) technologies, more PTMs have been discovered in recent years and have contributed significantly to preventing and treating infectious diseases. However, the mechanisms by which PTMs act on noroviruses remain poorly understood. In this section, we outline the current knowledge of the three common types of PTM and investigate their impact on norovirus pathogenesis. Moreover, we summarize the strategies and techniques for the identification of PTMs.

Keywords: N- and O-glycosylation; O-GlcNAcylation; norovirus; phosphorylation.

Publication types

  • Review
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Caliciviridae Infections*
  • Genotype
  • Glycosylation
  • Humans
  • Norovirus* / genetics
  • Phosphorylation
  • Phylogeny
  • Protein Processing, Post-Translational

Grants and funding

This research was funded by grants from the Kaohsiung Medical University (KMU-DK(A)111002 to L.-Y.K.) and the Taiwan Ministry of Science and Technology (NSTC-111-2320-B-037-023- to L.-Y.K.).