Gains and Losses of Transcription Factor Binding Sites in Yeast
Author Information
Author(s): Scott W. Doniger, Justin C. Fay
Primary Institution: Washington University School of Medicine
Hypothesis
The evolution of gene regulation plays a key role in generating diversity between species.
Conclusion
The study found that a significant number of transcription factor binding sites have been lost in a lineage-specific manner among closely related yeast species.
Supporting Evidence
- The study identified that nearly half of all loss events cannot be explained by binding site turnover.
- More than half of experimentally identified S. cerevisiae binding sites are not conserved across species.
- The research provides a computational framework for further studies on cis-regulatory sequences.
Takeaway
This study shows that yeast can lose and gain important DNA sequences that help control how genes are turned on and off, which can change how they work in different species.
Methodology
An evolutionary model was developed to detect the loss of constraint on individual transcription factor binding sites across four Saccharomyces species.
Potential Biases
Potential biases may arise from the assumptions made in the binding site models used.
Limitations
The study may have a high false positive rate in identifying semiconserved sites.
Participant Demographics
The study focused on four closely related yeast species: Saccharomyces cerevisiae, S. paradoxus, S. mikatae, and S. bayanus.
Statistical Information
P-Value
p<0.005
Statistical Significance
p<0.005
Digital Object Identifier (DOI)
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