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Multimerization of ICP0, a herpes simplex virus immediate-early protein
J Chen1, C Panagiotidis, S Silverstein
1Department of Microbiology, Columbia University, New York, New York 10032.
Journal of Virology
|September 1, 1992
Summary
Herpes simplex virus ICP0 protein, a key gene activator, forms multimers. Some mutated forms of ICP0 interfere with gene activation and virus complementation, revealing insights into viral gene regulation.
Area of Science:
- Virology
- Molecular Biology
- Gene Regulation
Background:
- ICP0 is a herpes simplex virus immediate-early protein.
- ICP0 is a nuclear protein that activates viral and host genes.
- ICP0 is highly phosphorylated.
Purpose of the Study:
- To investigate the multimerization of ICP0.
- To characterize the functional consequences of ICP0 mutations.
Main Methods:
- Biochemical assays using mutant ICP0 plasmids.
- Genetic assays using mutant ICP0 plasmids.
- Recombinant adenovirus expressing ICP0.
Main Results:
- Evidence suggests that ICP0 protein multimerizes.
- Transdominant mutant forms of ICP0 were identified.
- Mutant ICP0 interfered with reporter gene activation.
- Mutant ICP0 interfered with ICP0-minus virus complementation.
Conclusions:
- ICP0 protein multimerization is a key feature.
- Mutant ICP0 proteins can disrupt normal viral gene function.
- These findings provide insights into ICP0's role in viral replication.