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Published on: November 1, 2011
[Small protein, important functions: the matrix protein of rhabdovirus]
Sophie Luco1, Olivier Delmas1, Hervé Bourhy1
1Unité dynamique des lyssavirus et adaptation à l'hôte, Institut Pasteur, 28, rue du Docteur-Roux, 75724 Paris cedex 15, France.
Abstract:
The family Rhabdoviridae contains important pathogens of humans, livestocks or even crops. The matrix protein of rhabdovirus is a constituent of the virion, forming a layer between the viral envelope and the nucleocapsid. It is crucial for the bullet-like morphology of the virion. There is a strong structural convergence between the lyssavirus and vesiculovirus matrix proteins. These matrix proteins are able to self assemble to form non-covalent polymers, acting as a scaffold for the other components of the virion. The matrix protein of rhabdovirus also has non-structural functions within the viral cycle: it is involved in the expression and replication of the viral genome, and in the virion budding. Moreover, it is a key mediator of the interactions between the virus and the infected cell, even involved in the death of the cell. To conclude, the repertoire of the matrix protein of rhabdovirus functionalities keeps on expanding.
Insights
Rhabdovirus matrix proteins are crucial for viral structure and assembly. These proteins also play vital roles in viral replication, budding, and host cell interactions, expanding their known functions.
Area of Science:
- Virology
- Structural Biology
- Molecular Biology
Context:
- Rhabdoviridae are significant pathogens affecting humans, livestock, and crops.
- The matrix protein is a key structural component of the rhabdovirus virion.
Purpose:
- To explore the structural and functional characteristics of rhabdovirus matrix proteins.
- To highlight the multifaceted roles of matrix proteins in the viral lifecycle.
Summary:
- Rhabdovirus matrix proteins exhibit structural convergence with lyssavirus and vesiculovirus counterparts.
- They self-assemble into polymers, forming a scaffold essential for virion morphology.
- Matrix proteins are involved in viral genome expression, replication, budding, and host cell interactions, including cell death.
Impact:
- Understanding rhabdovirus matrix protein functions can inform antiviral strategies.
- This research expands the known functional repertoire of viral matrix proteins.
- Insights into matrix protein roles contribute to controlling rhabdovirus infections in agriculture and public health.
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