Nucleoporins and Silencing in Yeast
Author Information
Author(s): Ruben Giulia J., Kirkland Jacob G., MacDonough Tracy, Chen Miao, Dubey Rudra N., Gartenberg Marc R., Kamakaka Rohinton T.
Primary Institution: University of California Santa Cruz
Hypothesis
Do nuclear pore proteins (NUPs) play a role in the silencing of genes in yeast?
Conclusion
NUPs localize to a native tDNA barrier at HMR and contribute to the maintenance of silencing at HMR, but do not function as native barrier proteins.
Supporting Evidence
- NUPs localize to the tDNA barrier at HMR.
- Loss of NUPs reduces silencing at HMR.
- NUPs do not function as native barrier proteins.
- Recruitment of NUPs can restore silencing to a derepressed HMR locus.
- NUPs affect the perinuclear localization of HMR.
Takeaway
This study found that certain proteins help keep genes quiet in yeast by positioning them near the nuclear membrane, but they don't act as barriers to stop other genes from being silenced.
Methodology
The study used quantitative chromatin immunoprecipitation (qChIP) and fluorescent microscopy to analyze the localization and effects of NUPs on gene silencing.
Limitations
The study did not explore the effects of NUPs on all potential silencing pathways and focused primarily on specific NUPs.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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