p53 Interacts with RNA Polymerase II and Affects Its Function
Author Information
Author(s): Kim Sunyoung, Balakrishnan Sri Kripa, Gross David S.
Primary Institution: Louisiana State University Health Sciences Center
Hypothesis
How does p53 regulate transcriptional output independent of DNA binding?
Conclusion
The study suggests that p53 can physically interact with RNA polymerase II and impair its elongation process.
Supporting Evidence
- p53 can physically interact with the large subunit of RNA polymerase II.
- Mutations in the p53 core domain can suppress its interaction with RNA polymerase II.
- p53 expression in yeast impairs RNA polymerase II elongation.
- Oncogenic mutations within p53's core domain can alleviate growth defects caused by p53 expression.
Takeaway
p53 is like a traffic cop for a busy road, helping to control how fast cars (RNA polymerase II) can go, and sometimes slowing them down.
Methodology
The study used yeast models to analyze the interaction between p53 and RNA polymerase II through co-immunoprecipitation and transcription assays.
Limitations
The study primarily uses yeast models, which may not fully represent p53's function in higher eukaryotes.
Statistical Information
P-Value
0.058
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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