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Modes of paramyxovirus fusion: a Henipavirus perspective

Benhur Lee1, Zeynep Akyol Ataman

  • 1Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, USA. bleebhl@ucla.edu

Trends in Microbiology
|April 23, 2011
PubMed

Insights

Henipavirus uses protein receptors like ephrinB2 for entry, unlike other Paramyxoviridae viruses. Structural studies suggest henipavirus fusion mechanisms may differ from those using glycan receptors.

Area of Science:

  • Virology
  • Structural Biology
  • Molecular Biology

Background:

  • Henipavirus, a genus of Paramyxoviridae, utilizes protein receptors (ephrinB2/B3) for viral entry.
  • Paramyxovirus entry depends on fusion (F) and attachment (G) glycoproteins, where receptor binding to G initiates F-mediated membrane fusion.

Purpose of the Study:

  • To investigate the potential mechanistic differences in henipavirus entry and fusion compared to other paramyxoviruses.
  • To leverage structural and functional data of Nipah virus (NiV) and Hendra virus (HeV) glycoproteins.

Main Methods:

  • Analysis of structural and functional studies on henipavirus and other paramyxoviral glycoproteins.
  • Comparison of henipavirus entry mechanisms with those of paramyxoviruses employing glycan receptors.

Main Results:

  • Accumulated structural data for NiV and HeV G glycoproteins bound to ephrinB receptors have been elucidated.
  • These findings suggest a distinct mechanistic pathway for henipavirus entry and fusion.

Conclusions:

  • Henipavirus entry, mediated by protein receptors, may mechanistically diverge from paramyxoviruses that rely on glycan-based receptors.
  • Further research into henipavirus fusion mechanisms is warranted based on current structural and functional insights.

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