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Related Concept Videos

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...
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,...
Inheritance of Chromatin Structures03:17

Inheritance of Chromatin Structures

Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying DNA...
Epigenetic Regulation01:37

Epigenetic Regulation

Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.

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Related Experiment Video

Updated: May 16, 2026

An Integrated Platform for Genome-wide Mapping of Chromatin States Using High-throughput ChIP-sequencing in Tumor Tissues
10:41

An Integrated Platform for Genome-wide Mapping of Chromatin States Using High-throughput ChIP-sequencing in Tumor Tissues

Published on: April 5, 2018

Perceiving the epigenetic landscape through histone readers.

Catherine A Musselman1, Marie-Eve Lalonde, Jacques Côté

  • 1Department of Pharmacology, University of Colorado School of Medicine, Aurora, Colorado, USA.

Nature Structural & Molecular Biology
|December 6, 2012
PubMed
Summary

Histone post-translational modifications (PTMs) regulate chromatin structure. New epigenetic readers and their binding mechanisms are identified, impacting gene transcription and DNA repair.

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

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Repressing Gene Transcription by Redirecting Cellular Machinery with Chemical Epigenetic Modifiers
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Repressing Gene Transcription by Redirecting Cellular Machinery with Chemical Epigenetic Modifiers

Published on: September 20, 2018

Related Experiment Videos

Last Updated: May 16, 2026

An Integrated Platform for Genome-wide Mapping of Chromatin States Using High-throughput ChIP-sequencing in Tumor Tissues
10:41

An Integrated Platform for Genome-wide Mapping of Chromatin States Using High-throughput ChIP-sequencing in Tumor Tissues

Published on: April 5, 2018

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

Repressing Gene Transcription by Redirecting Cellular Machinery with Chemical Epigenetic Modifiers
10:28

Repressing Gene Transcription by Redirecting Cellular Machinery with Chemical Epigenetic Modifiers

Published on: September 20, 2018

Area of Science:

  • Epigenetics and Molecular Biology
  • Chromatin Biology
  • Genomic Regulation

Background:

  • Histone post-translational modifications (PTMs) are crucial for regulating chromatin structure and dynamics.
  • PTMs influence DNA interactions and act as binding sites for effector proteins (readers).
  • Reader proteins recruit nuclear signaling machinery to specific genomic sites.

Purpose of the Study:

  • To review recent advances in understanding histone PTM binding mechanisms.
  • To identify novel epigenetic readers involved in chromatin regulation.
  • To summarize the functional importance of PTM recognition in biological processes.

Main Methods:

  • Literature review of recent studies on histone PTMs and readers.
  • Analysis of biochemical and structural data characterizing reader-PTM interactions.
  • Functional studies investigating the role of identified readers in DNA-templated processes.

Main Results:

  • Characterization of diverse histone-binding mechanisms for PTM recognition.
  • Identification of novel protein readers that bind specific histone PTMs.
  • Demonstration of reader-mediated recruitment of signaling complexes for gene regulation and DNA repair.

Conclusions:

  • Histone PTMs and their readers form a complex regulatory network.
  • Understanding these interactions is key to deciphering gene transcription, DNA repair, and other genomic processes.
  • Advances in identifying readers and their binding mechanisms offer new insights into epigenetic regulation.