Nucleosome Occupancy Changes During the Cell Cycle
Author Information
Author(s): Hogan Gregory J, Lee Cheol-Koo, Lieb Jason D
Primary Institution: University of North Carolina at Chapel Hill
Hypothesis
How does nucleosome occupancy at gene promoters change throughout the cell cycle in yeast?
Conclusion
Nucleosome occupancy at the promoters of cell cycle-regulated genes fluctuates with the cell cycle, being reduced at the phase of peak gene expression.
Supporting Evidence
- Nucleosome occupancy at gene promoters is reduced during peak gene expression.
- FAIRE is established as a high-throughput method for measuring nucleosome occupancy.
- Most differences in nucleosome packaging are likely controlled by DNA sequence.
Takeaway
This study shows that as yeast cells grow and divide, the way DNA is wrapped around proteins changes, which helps control when genes are turned on and off.
Methodology
The study used FAIRE (formaldehyde-assisted isolation of regulatory elements) and whole-genome microarrays to examine nucleosome occupancy in synchronized yeast populations.
Limitations
The study may not capture all variations in nucleosome occupancy due to the timing of sampling during the cell cycle.
Participant Demographics
The study focused on the yeast species Saccharomyces cerevisiae.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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