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08:26
Purification of Viral DNA for the Identification of Associated Viral and Cellular Proteins
Published on: August 31, 2017
Replication and recombination of herpes simplex virus DNA
Isabella Muylaert1, Ka-Wei Tang, Per Elias
1Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
The Journal of Biological Chemistry
|March 3, 2011
Summary
Herpes simplex virus replication involves a viral replisome. Recent advances include structural data, in vitro reconstitution, and understanding cellular protein roles in viral DNA replication.
Area of Science:
- Virology
- Molecular Biology
- Structural Biology
Background:
- Herpes simplex virus (HSV) replication occurs in the host cell nucleus.
- Viral DNA replication relies on a multi-protein complex called the replisome.
- The HSV replisome comprises six viral proteins: DNA polymerase (UL30-UL42), helicase-primase (UL5-UL8-UL52), and single-stranded DNA-binding protein (ICP8/UL29).
- The UL9 initiator protein loads the replisome onto replication origins.
Purpose of the Study:
- To review recent significant developments in understanding HSV DNA replication.
- To highlight advances in structural biology, in vitro reconstitution, and mechanistic insights.
- To explore the interplay between viral replication and cellular proteins.
Main Methods:
- Structural determination of key viral replication proteins (DNA polymerase, accessory factor, ICP8).
- In vitro reconstitution of a functional HSV replisome.
- Mechanistic studies on the activation of viral DNA replication origins.
- Identification and characterization of cellular proteins involved in HSV replication.
- Analysis of replication foci formation and protein localization within the nucleus.
Main Results:
- Three-dimensional structures of essential HSV replication proteins have been determined.
- A functional HSV replisome has been successfully reconstituted in vitro.
- The mechanism of viral origin activation has been elucidated.
- Cellular proteins participating in or responding to viral DNA replication have been identified.
- Requirements for nuclear replication foci formation and their impact on protein localization are better understood.
Conclusions:
- Significant progress has been made in deciphering the molecular mechanisms of HSV DNA replication.
- Structural and functional studies have provided new insights into the HSV replisome.
- The interaction between viral and cellular proteins is crucial for efficient viral replication.
- Further research can leverage these findings for therapeutic strategies against HSV infections.
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