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Related Concept Videos

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.
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,...
Heterochromatin02:38

Heterochromatin

The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions that take up more dye are called heterochromatin. Heterochromatin is further classified into two forms – constitutive heterochromatin and facultative heterochromatin.
Constitutive heterochromatin: It is a highly compact region of chromatin that is mostly concentrated in the centromere and telomere. Unlike euchromatin, the amino acid at 9th...
DNA Microarrays02:34

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
Euchromatin01:01

Euchromatin

The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions take up more dye, appearing darker, while the less-compact areas take up less dye and appear lighter. Based on the compaction level, chromatins are classified into two primary forms – euchromatin and heterochromatin.
Euchromatin is the less dense region of the chromatin and stains lighter. Euchromatin contains histone H3 extensively...

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Related Experiment Video

Updated: Jun 6, 2026

Immunostaining for DNA Modifications: Computational Analysis of Confocal Images
09:42

Immunostaining for DNA Modifications: Computational Analysis of Confocal Images

Published on: September 7, 2017

The DNA methylome.

Mattia Pelizzola1, Joseph R Ecker

  • 1Genomic Analysis Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA.

FEBS Letters
|November 9, 2010
PubMed
Summary
This summary is machine-generated.

DNA methylation is a key epigenetic mechanism controlling gene expression and cellular differentiation. While its patterns are influenced by various factors and implicated in disease, its precise roles and regulatory mechanisms require further investigation.

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DNA Methylation: Bisulphite Modification and Analysis

Published on: October 21, 2011

Related Experiment Videos

Last Updated: Jun 6, 2026

Immunostaining for DNA Modifications: Computational Analysis of Confocal Images
09:42

Immunostaining for DNA Modifications: Computational Analysis of Confocal Images

Published on: September 7, 2017

Methyl-binding DNA capture Sequencing for Patient Tissues
08:40

Methyl-binding DNA capture Sequencing for Patient Tissues

Published on: October 31, 2016

DNA Methylation: Bisulphite Modification and Analysis
12:34

DNA Methylation: Bisulphite Modification and Analysis

Published on: October 21, 2011

Area of Science:

  • Epigenetics and Genomics
  • Molecular Biology

Background:

  • Cytosine methylation is a fundamental epigenetic mark in eukaryotic genomes.
  • It plays a crucial role in cellular differentiation and transcriptional control.
  • DNA methylation patterns are dynamic, influenced by genetics, environment, and aging, and altered in disease states.

Purpose of the Study:

  • To review the current understanding of DNA methylation in eukaryotes.
  • To highlight the evolutionary significance and genomic distribution of DNA methylation.
  • To identify knowledge gaps regarding its functional roles and regulatory mechanisms.

Main Methods:

  • Review of existing literature on DNA methylation.
  • Analysis of available whole-genome methylation data.
  • Comparative genomics approaches to study evolutionary patterns.

Main Results:

  • DNA methylation is widespread across eukaryotic genomes, with specific distributions in key genomic elements.
  • Methylome data aids in understanding the evolutionary history of this epigenetic modification.
  • Environmental and lifestyle factors demonstrably influence DNA methylation patterns.

Conclusions:

  • DNA methylation is a critical epigenetic regulator with complex inheritance and environmental interactions.
  • Further research is needed to fully elucidate its functions, establishment, maintenance, and interactions with cellular machinery.