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Related Concept Videos

Histone Modification02:32

Histone Modification

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 deacetylase,...
Histone Modification02:32

Histone Modification

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 deacetylase,...
Spreading of Chromatin Modifications02:25

Spreading of Chromatin Modifications

The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer is an enzyme that can...
Chromatin Immunoprecipitation- ChIP02:36

Chromatin Immunoprecipitation- ChIP

Chromatin immunoprecipitation, or ChIP, is an antibody-based technique used to identify sites on DNA that bind to transcription factors of interest or histone proteins. It also helps determine the type of histone modifications such as acetylation, phosphorylation, or methylation.
Types of ChIP
ChIP can be divided into two types - X-ChIP and N-ChIP. X-ChIP involves in vivo cross-linking of histones and regulatory proteins to DNA, fragmenting the DNA by sonication, and isolating the protein-DNA...

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Related Experiment Video

Updated: Jun 16, 2026

Complete Workflow for Analysis of Histone Post-translational Modifications Using Bottom-up Mass Spectrometry: From Histone Extraction to Data Analysis
11:02

Complete Workflow for Analysis of Histone Post-translational Modifications Using Bottom-up Mass Spectrometry: From Histone Extraction to Data Analysis

Published on: May 17, 2016

Chemical approaches for studying histone modifications.

Champak Chatterjee1, Tom W Muir

  • 1Laboratory of Synthetic Protein Chemistry, The Rockefeller University, New York, New York 10065, USA.

The Journal of Biological Chemistry
|February 12, 2010
PubMed
Summary
This summary is machine-generated.

Studying histone modifications is key to understanding gene regulation. This review highlights chemical tools for isolating homogeneously modified histones, overcoming in vivo heterogeneity challenges for biochemical studies.

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Histone Modification Screening using Liquid Chromatography, Trapped Ion Mobility Spectrometry, and Time-Of-Flight Mass Spectrometry
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Global Level Quantification of Histone Post-Translational Modifications in a 3D Cell Culture Model of Hepatic Tissue
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Complete Workflow for Analysis of Histone Post-translational Modifications Using Bottom-up Mass Spectrometry: From Histone Extraction to Data Analysis
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Histone Modification Screening using Liquid Chromatography, Trapped Ion Mobility Spectrometry, and Time-Of-Flight Mass Spectrometry
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Global Level Quantification of Histone Post-Translational Modifications in a 3D Cell Culture Model of Hepatic Tissue
08:12

Global Level Quantification of Histone Post-Translational Modifications in a 3D Cell Culture Model of Hepatic Tissue

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Epigenetics

Background:

  • Histones are core proteins of eukaryotic chromatin, essential for DNA packaging.
  • Histone post-translational modifications (PTMs) are critical regulators of chromatin structure and gene transcription.
  • Studying individual histone PTMs is vital for understanding their precise mechanistic roles.

Purpose of the Study:

  • To review chemical tools enabling the isolation of site-specifically modified histones.
  • To address the challenge of histone modification heterogeneity in vivo.
  • To facilitate biochemical and biophysical studies of homogeneous histone modifications.

Main Methods:

  • Focuses on chemical synthesis and modification strategies.
  • Discusses methods for purifying homogeneously modified histone proteins.
  • Highlights techniques applicable to biochemical and biophysical analyses.

Main Results:

  • Chemical tools provide access to homogeneous histone preparations.
  • These tools overcome the limitations of in vivo heterogeneity.
  • Enables detailed mechanistic studies of individual histone modifications.

Conclusions:

  • Chemical approaches are crucial for advancing the study of histone modifications.
  • Homogeneously modified histones are essential for dissecting epigenetic mechanisms.
  • This minireview provides a resource for researchers in epigenetics and chromatin biology.