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Related Concept Videos

Histone Modification02:32

Histone Modification

13.7K
The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
13.7K

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Assays for Validating Histone Acetyltransferase Inhibitors
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Direct assessment of histone function using histone replacement.

Emma Tung Corcoran1, Yannick Jacob1

  • 1Yale University, Department of Molecular, Cellular and Developmental Biology, Faculty of Arts and Sciences, 260 Whitney Avenue, New Haven, CT 06511, USA.

Trends in Biochemical Sciences
|July 19, 2022
PubMed
Summary

Histone replacement systems are crucial for studying gene regulation and DNA repair. These experimental tools enable researchers to investigate histone functions and residues in eukaryotic cells.

Keywords:
ArabidopsisDrosophilachromatinepigeneticsunicellular eukaryotes

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Area of Science:

  • Molecular Biology
  • Genetics
  • Cell Biology

Background:

  • Histones are key proteins involved in regulating eukaryotic genomic processes like transcription, replication, DNA repair, and chromatin organization.
  • Understanding histone function is essential for elucidating chromatin-based activities.
  • Histone replacement systems provide powerful experimental tools for this investigation.

Purpose of the Study:

  • To review existing histone replacement systems in model organisms.
  • To discuss the advantages and limitations of these systems.
  • To identify future research opportunities utilizing histone replacement strategies.

Main Methods:

  • This review synthesizes information on various histone replacement systems.
  • It analyzes the benefits and drawbacks inherent in each system.
  • The focus is on systems allowing partial or complete replacement of endogenous histones with mutant versions.

Main Results:

  • Histone replacement systems facilitate systematic screens of histone regulatory functions.
  • These systems allow for the direct assessment of specific histone residue functions.
  • A comprehensive overview of current systems and their applications is presented.

Conclusions:

  • Histone replacement systems are indispensable for dissecting histone roles in genomic regulation.
  • Further development and application of these strategies will advance our understanding of chromatin biology.
  • This review highlights the potential for future research in this dynamic field.