Genome-wide in vitro reconstitution of yeast chromatin with in vivo-like nucleosome positioning
Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review
Recent genome-wide mapping of nucleosome positions revealed that well-positioned nucleosomes are pervasive across eukaryotic genomes, especially in important regulatory regions such as promoters or origins of replication. As nucleosomes impede access to DNA, their positioning is a primary mode of genome regulation. In vivo studies, especially in yeast, shed some light on factors involved in nucleosome positioning, but there is an urgent need for a complementary biochemical approach in order to confirm their direct roles, identify missing factors, and study their mechanisms. Here we describe a method that allows the genome-wide in vitro reconstitution of nucleosomes with very in vivo-like positions by a combination of salt gradient dialysis reconstitution, yeast whole cell extracts, and ATP. This system provides a starting point and positive control for the biochemical dissection of nucleosome positioning mechanisms.
Original language | English |
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Title of host publication | Genome-wide in vitro reconstitution of yeast chromatin with in vivo-like nucleosome positioning |
Number of pages | 28 |
Volume | 513 |
Publication date | 2012 |
DOIs | |
Publication status | Published - 2012 |
Externally published | Yes |
Series | Methods in Enzymology |
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ISSN | 0076-6879 |
Bibliographical note
Copyright © 2012 Elsevier Inc. All rights reserved.
- Adenosine Triphosphate/metabolism, Animals, Chromatin/chemistry, Chromatin Assembly and Disassembly, DNA Restriction Enzymes/chemistry, DNA, Fungal/chemistry, Dialysis/methods, Drosophila/chemistry, Electrophoresis, Polyacrylamide Gel, Electroporation/methods, Escherichia coli/chemistry, Genome, Fungal, Genomic Library, Histones/chemistry, Micrococcal Nuclease/chemistry, Nucleic Acid Conformation, Nucleosomes/chemistry, Plasmids/chemistry, Saccharomyces cerevisiae/chemistry, Sodium Chloride/chemistry, Titrimetry/methods
Research areas
ID: 301928600