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Lassa virus Z protein is a matrix protein and sufficient for the release of virus-like particles [corrected]

Thomas Strecker1, Robert Eichler, Jan ter Meulen

  • 1Institut für Virologie der Philipps-Universität Marburg, D-35037 Marburg, Germany.

Journal of Virology
|September 13, 2003
PubMed

Insights

The Lassa virus Z protein acts as the matrix protein, driving virus particle release. It is essential for forming enveloped virus-like particles, even without other viral proteins.

Area of Science:

  • Virology
  • Molecular Biology
  • Cell Biology

Background:

  • Lassa virus is an enveloped virus responsible for Lassa hemorrhagic fever.
  • Its genome encodes key proteins including the Z protein.
  • The function of the Z protein in viral release was not fully understood.

Purpose of the Study:

  • To investigate the role of the Lassa virus Z protein in virus particle release.
  • To determine if the Z protein is sufficient for forming enveloped viral particles.
  • To identify functional domains within the Z protein involved in its activity.

Main Methods:

  • Analysis of Z protein abundance and localization in viral particles.
  • Experiments to assess particle release in the absence of other viral proteins.
  • Identification and characterization of late domains (PTAP and PPXY) within the Z protein.

Main Results:

  • The Lassa virus Z protein is abundant in viral particles and strongly membrane-associated.
  • The Z protein alone is sufficient to release enveloped particles, independent of other viral proteins.
  • The PTAP and PPXY late domains within the Z protein are crucial for virus-like particle release.

Conclusions:

  • The Lassa virus Z protein functions as the matrix protein.
  • The Z protein is the primary driver for the release of Lassa virus particles.
  • Understanding the Z protein's role is critical for developing antiviral strategies.

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