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Related Concept Videos

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...
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...
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...
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...
Chromatin Structure Regulates pre-mRNA Processing02:41

Chromatin Structure Regulates pre-mRNA Processing

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.
The chromatin structure, especially...
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...

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Related Experiment Video

Updated: Jun 3, 2026

RNA-Associated Chromatin DNA-DNA Interaction Method
11:01

RNA-Associated Chromatin DNA-DNA Interaction Method

Published on: April 30, 2026

Chromatin: bind at your own RSC.

Nicolas E Buchler1, Lu Bai

  • 1Department of Biology, Duke University, Durham, NC 27708, USA. nicolas.buchler@duke.edu

Current Biology : CB
|March 23, 2011
PubMed
Summary

A newly discovered RSC-nucleosome complex influences nearby nucleosomes and provides accessible regulatory sites, challenging existing scientific perspectives.

Area of Science:

  • Chromatin biology
  • Molecular mechanisms of gene regulation

Background:

  • Nucleosomes are fundamental units of chromatin structure.
  • The RSC (Remodeler-Switch-Chromatin) complex is a key regulator of chromatin.
  • Understanding RSC-nucleosome interactions is crucial for gene expression control.

Purpose of the Study:

  • To identify and characterize a novel RSC-nucleosome complex.
  • To investigate the functional impact of this complex on flanking nucleosomes.
  • To determine how this complex affects the accessibility of regulatory sites.

Main Methods:

  • Biochemical reconstitution of RSC-nucleosome complexes.
  • Nucleosome phasing assays.
  • Analysis of regulatory site accessibility using biochemical and biophysical techniques.

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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

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Getting an A with the 3Cs: Chromosome Conformation Capture for Undergraduates
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Getting an A with the 3Cs: Chromosome Conformation Capture for Undergraduates

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Related Experiment Videos

Last Updated: Jun 3, 2026

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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

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Getting an A with the 3Cs: Chromosome Conformation Capture for Undergraduates

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Main Results:

  • Identification of a novel RSC-nucleosome complex with unique structural and functional properties.
  • Demonstration that this complex strongly phases adjacent nucleosomes.
  • Evidence that the complex renders specific regulatory sites readily accessible.

Conclusions:

  • The novel RSC-nucleosome complex plays a significant role in organizing chromatin structure.
  • This complex challenges established models of RSC function and nucleosome phasing.
  • Findings provide new insights into the regulation of gene accessibility.