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Related Experiment Videos

Structural disorder within the replicative complex of measles virus: functional implications.

Jean-Marie Bourhis1, Bruno Canard, Sonia Longhi

  • 1Architecture et Fonction des Macromolécules Biologiques, UMR 6098 CNRS et Universités Aix-Marseille I et II, Campus de Luminy, 13288 Marseille Cedex 09, France.

Virology
|December 21, 2005
PubMed
Summary

Measles virus nucleoprotein (N) and phosphoprotein (P) exhibit significant structural disorder. This flexibility in the Mononegavirales order facilitates viral RNA replication by enabling complex formation and nucleocapsid assembly.

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Area of Science:

  • Virology
  • Molecular Biology
  • Structural Biology

Background:

  • Measles virus, a Paramyxoviridae family member, possesses a negative-sense RNA genome.
  • The genome is encapsidated by nucleoprotein (N) into a nucleocapsid, serving as a template for transcription and replication.
  • RNA-dependent RNA polymerase (L protein) interacts with the nucleocapsid via phosphoprotein (P).

Purpose of the Study:

  • To review experimental data on structural disorder in measles virus N and P proteins.
  • To explore the prevalence and functional implications of structural disorder in Mononegavirales replication complexes.
  • To propose a model for the role of disordered proteins in viral RNA replication.

Main Methods:

  • Literature review of experimental data on measles virus N and P proteins.

Related Experiment Videos

  • Analysis of studies on structural disorder in Paramyxoviridae and Mononegavirales.
  • Development of a theoretical model for protein-RNA interactions during replication.

    • Main Results:

    • Measles virus N and P proteins display significant intrinsic structural disorder.
    • Structural disorder is a common feature in the replication complexes of Paramyxoviridae and Mononegavirales.
    • Disordered domains in N and P proteins are crucial for forming the tripartite (N-P-L) replication complex.

    Conclusions:

    • The flexibility of disordered N and P domains is essential for measles virus RNA replication.
    • A model is proposed where disordered N and P facilitate the formation of the replication complex and subsequent nucleocapsid assembly.
    • Structural disorder represents a key functional adaptation in the replication strategy of Mononegavirales.