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Measles virus V protein binds zinc
1Department of Microbiology and Immunology, McGill University, Montreal, Quebec, Canada.
Virology
|January 1, 1994
Summary
Measles virus V protein binds zinc, a property attributed to its unique C-terminal domain. This zinc-binding capability is specific and conserved across paramyxoviruses, suggesting a crucial role for V protein function.
Area of Science:
- Virology
- Molecular Biology
- Protein Biochemistry
Background:
- Measles virus transcription produces multiple mRNAs from the P/C gene.
- RNA editing, specifically nontemplated G insertion, creates a distinct mRNA for V protein translation.
Purpose of the Study:
- To investigate the biochemical properties of the measles virus V protein.
- To determine if the V protein binds zinc and identify the responsible domain.
Main Methods:
- Utilized a zinc-binding protocol to assess metal binding by the V protein.
- Performed experiments to confirm the specificity of zinc binding.
- Localized the zinc-binding activity to the unique C-terminal domain of the V protein.
Main Results:
- The measles virus V protein was confirmed to bind zinc.
- Zinc binding was found to be highly specific for zinc ions.
- The unique 68-amino acid C-terminal domain of the V protein is responsible for zinc binding.
Conclusions:
- The V protein's C-terminal domain possesses conserved cysteine residues, suggesting a zinc finger-like structure.
- The specific zinc-binding ability of the V protein is a key characteristic.
- This finding provides insights into the structural and functional properties of paramyxovirus V proteins.