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Adenovirus cores can function as templates in in vitro DNA replication
1Division of Virology, National Institute for Medical Research, London, UK.
The EMBO Journal
|January 1, 1983
Summary
Adenovirus cores can serve as templates for in vitro DNA replication, enabling initiation and elongation. Novobiocin, a DNA gyrase inhibitor, blocks this replication by preventing initiation complex formation.
Area of Science:
- Molecular Biology
- Virology
- Biochemistry
Background:
- Adenovirus structure and replication mechanisms are crucial for understanding viral gene expression.
- In vitro systems are valuable tools for dissecting complex biological processes like DNA replication.
Purpose of the Study:
- To investigate the role of adenovirus cores as templates in DNA replication.
- To identify inhibitors of adenovirus DNA replication and their mechanisms of action.
Main Methods:
- Gentle disruption of adenovirus particles by heating (56°C) with deoxycholate to isolate viral cores.
- Utilizing an in vitro DNA replication system with adenovirus cores and DNA-protein complexes as templates.
- Assessing the effect of novobiocin, a DNA gyrase inhibitor, on DNA replication initiation and elongation.
Main Results:
- Adenovirus cores successfully functioned as templates in an in vitro DNA replication system.
- Both initiation, evidenced by terminal protein-dCMP complex formation, and elongation exceeding 300 nucleotides were observed.
- Novobiocin inhibited in vitro DNA replication by preventing the formation of the initiation complex.
Conclusions:
- Adenovirus cores are capable of supporting DNA replication initiation and elongation in vitro.
- DNA gyrase activity, as inhibited by novobiocin, is essential for the initiation of adenovirus DNA replication.