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Updated: Jun 4, 2026
08:26
Purification of Viral DNA for the Identification of Associated Viral and Cellular Proteins
Published on: August 31, 2017
Analysis of Protein-DNA Interactions During Cytomegalovirus Infection.
1Institute for Clinical and Molecular Virology, University of Erlangen, Erlangen, Germany.
Methods in Molecular Medicine
|February 23, 2011
Summary
Human cytomegalovirus (HCMV) has a complex genome with over 200 proteins. Transcriptional regulation by promoter activation, involving viral and cellular proteins, is crucial for its gene expression cascade.
Area of Science:
- Virology
- Molecular Biology
- Genetics
Background:
- Human cytomegalovirus (HCMV) possesses a complex double-stranded DNA genome (~240 kbp) encoding over 200 proteins.
- HCMV gene expression occurs coordinately during viral replication.
- Transcriptional regulation via promoter activation is considered key to the cascade of gene expression during the HCMV replicative cycle.
Purpose of the Study:
- To investigate the transcriptional regulation mechanisms governing HCMV gene expression.
- To identify the viral and cellular proteins involved in promoter activation during HCMV infection.
Main Methods:
- Analysis of promoter activation during the immediate-early (IE) phase of HCMV gene expression.
- Identification of transcription factors and viral proteins interacting with the major IE gene region enhancer-promoter.
Main Results:
- The major IE gene region enhancer-promoter is critical for driving transcription during the IE phase.
- Both cellular proteins (ATF/CREB, NF-κ-B) and viral proteins (pp71, ppUL69, IE2-p86) regulate this enhancer-promoter.
Conclusions:
- Transcriptional regulation by promoter activation is a central mechanism in HCMV gene expression.
- A complex interplay between viral and cellular factors orchestrates the precise timing of HCMV gene expression.
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