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Updated: Jun 1, 2026
10:33
Single-Copy Gene Locus Chromatin Purification in Saccharomyces cerevisiae
Published on: November 17, 2023
Nucleosome positioning in Saccharomyces cerevisiae.
An Jansen1, Kevin J Verstrepen
1VIB Laboratory for Systems Biology, Bio-Incubator, Gaston Geenslaan 1, B-3001 Leuven, Belgium.
Microbiology and Molecular Biology Reviews : MMBR
|June 8, 2011
Summary
Understanding nucleosome positioning in yeast reveals how DNA packaging impacts gene regulation and cellular processes. This review covers genome-wide mapping technologies and factors influencing chromatin structure.
Area of Science:
- Molecular Biology
- Genetics
- Epigenetics
Background:
- Eukaryotic DNA is packaged into nucleosomes, forming chromatin, which affects DNA accessibility.
- Nucleosome positioning is crucial for gene expression, DNA repair, replication, and chromosome segregation.
- Understanding nucleosome organization is key to deciphering gene regulation and epigenetic phenomena.
Purpose of the Study:
- To review recent technological advances in genome-wide nucleosome mapping in Saccharomyces cerevisiae.
- To discuss factors influencing in vivo nucleosome positioning.
- To explore the biological roles of chromatin in gene transcription, gene regulation evolution, and epigenetics.
Main Methods:
- Genome-wide mapping technologies for nucleosome positions.
- Analysis of cis-acting factors (e.g., AT content, repeats, poly(dA:dT) tracts).
- Investigation of trans-acting factors (e.g., chromatin remodelers, transcription factors, histone modifiers, RNA polymerases).
Main Results:
- Recent technological advances enable precise genome-wide mapping of nucleosome positions.
- Nucleosome positioning is influenced by various cis and trans factors.
- Chromatin structure plays a significant role in gene transcription and regulation.
Conclusions:
- Nucleosome positioning is a fundamental determinant of DNA accessibility and cellular processes.
- Advances in mapping technologies provide deeper insights into chromatin organization.
- Understanding chromatin dynamics is essential for comprehending gene regulation and epigenetics.
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