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Related Experiment Videos

Do lipid rafts mediate virus assembly and pseudotyping?

John A G Briggs1, Thomas Wilk1, Stephen D Fuller1

  • 1Division of Structural Biology, Wellcome Trust Centre for Human Genetics, Henry Wellcome Building for Genomic Medicine, University of Oxford, Roosevelt Drive, Headington, Oxford OX3 7BN, UK.

The Journal of General Virology
|March 26, 2003
PubMed
Summary
This summary is machine-generated.

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Enveloped viruses can form pseudotypes during co-infection by incorporating proteins from different viruses. Lipid rafts are key to this process, concentrating viral proteins for assembly and resolving the pseudotypic paradox.

Area of Science:

  • Virology
  • Cell Biology
  • Biochemistry

Background:

  • Co-infecting enveloped viruses can produce pseudotypes, virions with mixed viral envelopes.
  • Virus assembly requires selective incorporation of viral proteins while excluding host proteins, known as the pseudotypic paradox.

Purpose of the Study:

  • To investigate the role of lipid rafts in the formation of viral pseudotypes.
  • To understand the mechanism behind selective viral protein incorporation during assembly.

Main Methods:

  • The study focuses on the proposed role of lipid rafts in concentrating viral components.
  • It examines how viral structural proteins interact with lipid rafts and influence local lipid composition.

Main Results:

Related Experiment Videos

  • Evidence suggests lipid rafts concentrate viral components at the plasma membrane during assembly.
  • Viral protein interactions within rafts amplify lipid changes, further enhancing viral protein concentration.
  • An affinity for lipid rafts appears to be a common characteristic of enveloped viruses forming pseudotypes.

    • Conclusions:

    • Lipid rafts are crucial for the assembly of enveloped viruses, particularly in the formation of pseudotypes.
    • The selective concentration of viral proteins in lipid rafts helps resolve the pseudotypic paradox.
    • Affinity for lipid rafts may be a unifying mechanism for pseudotype formation across different enveloped viruses.