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Related Concept Videos

Epigenetic Regulation01:37

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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.
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Inheritance of Chromatin Structures03:17

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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...
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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.
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Related Experiment Video

Updated: May 5, 2026

Enhanced Reduced Representation Bisulfite Sequencing for Assessment of DNA Methylation at Base Pair Resolution
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Integrating DNA methylation dynamics into a framework for understanding epigenetic codes.

Keith E Szulwach1, Peng Jin

  • 1Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA.

Bioessays : News and Reviews in Molecular, Cellular and Developmental Biology
|November 19, 2013
PubMed
Summary
This summary is machine-generated.

DNA methylation, a key epigenetic mechanism, dynamically regulates genome access and cellular phenotype. Emerging research reveals its crucial role in encoding epigenetic information, contributing to complex genomic functions.

Keywords:
DNA demethylationDNA methylationchromatinepigenetics

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Area of Science:

  • Genomics
  • Epigenetics
  • Molecular Biology

Background:

  • Genomic function relies on DNA sequence and controlled access to genetic information.
  • DNA accessibility is influenced by covalent modifications like DNA methylation and histone modifications, forming epigenetic codes.
  • These epigenetic codes correlate with cellular phenotypes.

Purpose of the Study:

  • To explore the role of DNA methylation in encoding epigenetic information.
  • To discuss recent advances in understanding the dynamic regulation of DNA methylation.
  • To integrate these mechanisms into a framework explaining DNA methylation's contribution to epigenetic codes.

Main Methods:

  • Review of existing literature on DNA methylation and demethylation pathways.
  • Analysis of recent research on the dynamic regulation of DNA methylation in the genome.
  • Conceptual framework development integrating methylation dynamics with epigenetic coding.

Main Results:

  • DNA methylation plays a significant role in gene regulation and overall genomic function.
  • The dynamic nature of DNA methylation is increasingly understood, highlighting its regulatory capacity.
  • A framework is proposed to illustrate how DNA methylation contributes to the broader epigenetic code.

Conclusions:

  • DNA methylation is a critical component of the epigenetic code, influencing cellular phenotype.
  • Understanding the dynamic regulation of DNA methylation is key to deciphering epigenetic information.
  • Further research integrating methylation dynamics will elucidate its full contribution to genomic function.