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Multiple sequence-specific transcription factors modulate cytomegalovirus enhancer activity in vitro
P Ghazal1, H Lubon, L Hennighausen
1Laboratory of Biochemistry and Metabolism, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland 20892.
Molecular and Cellular Biology
|April 1, 1988
Summary
This study explored DNA-binding proteins interacting with the polymerase II transcriptional machinery. Results suggest enhancer factors can bind to the promoter transcription complex, mediating gene activity.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- The human cytomegalovirus immediate-early 1 gene is crucial for viral replication and pathogenesis.
- Understanding its transcriptional regulation is key to developing antiviral strategies.
Purpose of the Study:
- To investigate the interaction between DNA-binding proteins and the polymerase II transcriptional machinery in vitro.
- To identify specific enhancer-binding factors involved in regulating the human cytomegalovirus immediate-early 1 gene.
Main Methods:
- Utilized a competition assay with individual target sequences for enhancer-binding factors.
- Analyzed the binding of transcription factors to specific enhancer sequences in vitro.
Main Results:
- Identified at least five specific enhancer sequences critical for mediating the activity of the human cytomegalovirus immediate-early 1 gene.
- Demonstrated that individual DNA-bound enhancer factors can interact with the promoter transcription complex.
Conclusions:
- DNA-binding proteins, specifically enhancer factors, play a significant role in transcriptional regulation.
- These enhancer factors interact with the polymerase II transcriptional machinery, influencing gene expression of viral genes.