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Related Concept Videos

Master Transcription Regulators02:23

Master Transcription Regulators

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Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
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Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...
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Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
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Chromatin Modification in iPS Cells01:32

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Chromatin modification alters gene expression; therefore, scientists can add histone-modifying enzymes, histone variants, and chromatin remodeling complexes to somatic cells to aid reprogramming into pluripotent stem (iPS) cells.
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In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
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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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Related Experiment Video

Updated: May 6, 2026

Isolation and Cultivation of Neural Progenitors Followed by Chromatin-Immunoprecipitation of Histone 3 Lysine 79 Dimethylation Mark
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Chromatin regulators of neural development.

K Tyssowski1, Y Kishi1, Y Gotoh1

  • 1Institute of Molecular and Cellular Biosciences, University of Tokyo, Tokyo, Japan.

Neuroscience
|October 23, 2013
PubMed
Summary

Chromatin modifications regulate gene expression during mouse brain development. These epigenetic changes occur locally and globally, influencing neural precursor fate and synapse maturation.

Keywords:
chromatinneural developmentneural precursor/progenitor cellsneuronal differentiation

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Area of Science:

  • Neuroscience
  • Epigenetics
  • Developmental Biology

Background:

  • Chromatin modifications are crucial for regulating gene expression during neural development.
  • These modifications include histone tail alterations, DNA methylation, and chromatin structure changes.

Purpose of the Study:

  • To review recent findings on the roles of local and global chromatin regulation in mouse brain development.
  • To highlight how epigenetic mechanisms control gene expression from neural precursor specification to synapse maturation.

Main Methods:

  • Literature review of recent research papers.
  • Analysis of studies focusing on epigenetic modifications in the developing mouse brain.

Main Results:

  • Chromatin modifications dynamically regulate gene expression throughout neural development.
  • Both localized and genome-wide epigenetic changes impact neural precursor cell fate and synapse maturation.
  • Recent studies reveal global roles for some chromatin modifications.

Conclusions:

  • Epigenetic regulation at the chromatin level is essential for orchestrating complex developmental programs in the brain.
  • Understanding these local and global chromatin dynamics provides insights into normal brain development and potential disruptions.