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Related Concept Videos

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 Regulation01:46

Epigenetic Regulation

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

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Related Experiment Video

Updated: Jun 8, 2026

Purification of H3 and H4 Histone Proteins and the Quantification of Acetylated Histone Marks in Cells and Brain Tissue
09:43

Purification of H3 and H4 Histone Proteins and the Quantification of Acetylated Histone Marks in Cells and Brain Tissue

Published on: November 30, 2018

[Epigenetics and memory].

Johannes Gräff1, Tamara B Franklin, Isabelle M Mansuy

  • 1Brain Research Institute, University of Zurich, Zurich, Switzerland.

Biologie Aujourd'Hui
|October 19, 2010
PubMed
Summary
This summary is machine-generated.

Epigenetic modifications in the brain, including DNA methylation and histone alterations, are crucial for learning, memory, and neuronal identity. These dynamic epigenetic marks regulate gene expression in response to stimuli.

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Area of Science:

  • Neuroscience
  • Epigenetics
  • Molecular Biology

Context:

  • Epigenetic mechanisms regulate gene expression and cellular identity in the brain.
  • Chromatin modifications are essential for dynamic neuronal responses to environmental stimuli.
  • These modifications are critical for fundamental brain functions like learning and memory.

Purpose:

  • To highlight the role of epigenetic marking in brain function.
  • To explain the molecular basis of the epigenetic code in neurons.
  • To underscore the importance of studying these mechanisms in animal models.

Summary:

  • Epigenetic marking of chromatin, involving DNA methylation and histone post-translational modifications (acetylation, phosphorylation, methylation, ubiquitination), is vital for brain functions.
  • These modifications allow nerve cells to respond to stimuli, modulate gene expression, and maintain cellular identity.
  • Research in animal models demonstrates the significance and functional modes of these stable yet dynamic epigenetic changes.

Impact:

  • Understanding brain epigenetics can lead to new insights into learning and memory disorders.
  • This research provides a foundation for exploring therapeutic interventions targeting epigenetic mechanisms.
  • It deepens our knowledge of how environmental factors influence brain function at a molecular level.