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Related Experiment Video

Updated: Jun 25, 2026

Surface Functionalization of Hepatitis E Virus Nanoparticles Using Chemical Conjugation Methods
09:12

Surface Functionalization of Hepatitis E Virus Nanoparticles Using Chemical Conjugation Methods

Published on: May 11, 2018

7.0K

Learning more about hepatitis E virus.

Altaira D Dearborn1, Ashish Kumar1, Joseph Marcotrigiano1

  • 1Structural Virology Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, United States.

Elife
|March 22, 2023
PubMed
Summary
This summary is machine-generated.

The hepatitis E virus ORF1 polyprotein contains a domain that was mistakenly identified as a protease. This research reveals it is actually a zinc-binding domain, crucial for viral function.

Keywords:
Hepatitis E virusinfectious diseasemicrobiologyreplicationviral hepatitisvirus infectionviruses

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Area of Science:

  • Virology
  • Molecular Biology
  • Protein Structure

Background:

  • The Hepatitis E virus (HEV) ORF1 polyprotein is essential for viral replication.
  • A specific domain within ORF1 was annotated as a protease based on sequence homology.
  • Re-evaluation of this domain's function is critical for understanding HEV pathogenesis.

Discussion:

  • This study re-characterizes a domain within the Hepatitis E virus ORF1 polyprotein.
  • Evidence indicates this domain functions as a zinc-binding domain, not a protease.
  • This finding necessitates a revision of the functional annotation of HEV ORF1.

Key Insights:

  • The previously presumed protease domain in HEV ORF1 is confirmed as a zinc-binding domain.
  • Zinc-binding is essential for the structural integrity and/or function of this domain.
  • This discovery impacts our understanding of HEV genome expression and viral assembly.

Outlook:

  • Further structural and biochemical studies are needed to elucidate the precise role of zinc binding.
  • This revised understanding may open new avenues for antiviral drug development targeting HEV.
  • Investigating similar domains in related viruses could reveal conserved functional mechanisms.