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Updated: May 23, 2025
10:40
Assembly of Nucleosomal Arrays from Recombinant Core Histones and Nucleosome Positioning DNA
Published on: September 10, 2013
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Purification of Recombinant Histones and Mononucleosome Assembly
Yiming Zhao1,2, Jingjun Hong1,2
1Institute of Health Sciences and Technology (IHST), Institutes of Physical Sciences and Information Technology, Anhui University, Hefei, China.
Current Protocols
|May 22, 2025
Summary
This study introduces a streamlined method for reconstituting histone octamers and assembling mononucleosomes using only fast protein liquid chromatography (FPLC). This approach simplifies large-scale chromatin component production without high-performance liquid chromatography (HPLC).
Area of Science:
- Molecular Biology
- Chromatin Biology
- Biochemistry
Background:
- Nucleosomes, the fundamental units of chromatin, are crucial for gene regulation.
- Histone octamers, comprising H2A, H2B, H3, and H4 proteins, form the core of nucleosomes.
- Existing protocols often require both HPLC and FPLC for histone purification and octamer assembly.
Purpose of the Study:
- To present a simplified protocol for histone octamer reconstitution and mononucleosome assembly.
- To eliminate the need for HPLC in the purification and assembly process.
- To enable large-scale production of histone octamers and mononucleosomes.
Main Methods:
- Histone purification from Escherichia coli (E. coli).
- Reconstitution of purified histones into histone octamers.
- In vitro assembly of mononucleosomes using only FPLC.
Main Results:
- Successful purification of recombinant histones.
- Efficient reconstitution of histone octamers.
- Effective assembly of mononucleosomes using a single FPLC step.
- Demonstration of large-scale capability without HPLC.
Conclusions:
- The presented method offers an effective and simplified approach for histone octamer reconstitution and mononucleosome assembly.
- This protocol facilitates large-scale production of key chromatin components.
- The FPLC-only method streamlines chromatin research and related applications.
Keywords:
FPLCHistoneshistone octamer mononucleosome reconstitution and purificationmononucleosome assemblyMore Related Videos
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