CTCF Positions Nucleosomes
Author Information
Author(s): Fu Yutao, Sinha Manisha, Peterson Craig L., Weng Zhiping, van Steensel Bas
Primary Institution: Boston University
Hypothesis
Does the insulator binding protein CTCF position nucleosomes across the human genome?
Conclusion
CTCF binding provides an anchor for positioning nucleosomes, which are enriched in specific histone modifications and variants.
Supporting Evidence
- CTCF binding sites are flanked by well-positioned nucleosomes.
- Nucleosomes enriched in histone modifications correlate with greater DNA accessibility.
- CTCF provides a stronger nucleosome positioning effect than transcription start sites.
Takeaway
CTCF helps organize DNA in our cells by positioning nucleosomes, which are like little spools that DNA wraps around, making it easier or harder for genes to be read.
Methodology
The study performed an integrative analysis of various datasets generated by deep-sequencing and high-density tiling arrays to examine nucleosome positioning.
Limitations
The findings may not apply universally across all genomic regions or cell types.
Digital Object Identifier (DOI)
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