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Related Concept Videos

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...
Nucleosome Remodeling02:54

Nucleosome Remodeling

Nucleosomes are the basic units of chromatin compaction. Each nucleosome consists of the DNA bound tightly around a histone core, which makes the DNA inaccessible to DNA binding proteins such as DNA polymerase and RNA polymerase. Hence, the fundamental problem is to ensure access to DNA when appropriate, despite the compact and protective chromatin structure.
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
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,...
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...
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...

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Related Experiment Video

Updated: Jun 16, 2026

A Seminiferous Tubule Squash Technique for the Cytological Analysis of Spermatogenesis Using the Mouse Model
09:40

A Seminiferous Tubule Squash Technique for the Cytological Analysis of Spermatogenesis Using the Mouse Model

Published on: February 6, 2018

RNF8-dependent histone modifications regulate nucleosome removal during spermatogenesis.

Lin-Yu Lu1, Jiaxue Wu, Lin Ye

  • 1Department of Internal Medicine, University of Michigan Medical School, 109 Zina Pitcher Place, BSRB 1520, Ann Arbor, MI 48109, USA.

Developmental Cell
|February 16, 2010
PubMed
Summary
This summary is machine-generated.

The ubiquitin ligase RNF8 is crucial for sperm development, facilitating global nucleosome removal via histone ubiquitination and subsequent acetylation, essential for paternal genome packaging.

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Isolation of Murine Spermatogenic Cells using a Violet-Excited Cell-Permeable DNA Binding Dye
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Isolation of Murine Spermatogenic Cells using a Violet-Excited Cell-Permeable DNA Binding Dye

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Isolation and Cultivation of Neural Progenitors Followed by Chromatin-Immunoprecipitation of Histone 3 Lysine 79 Dimethylation Mark
10:09

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

Published on: January 26, 2018

Related Experiment Videos

Last Updated: Jun 16, 2026

A Seminiferous Tubule Squash Technique for the Cytological Analysis of Spermatogenesis Using the Mouse Model
09:40

A Seminiferous Tubule Squash Technique for the Cytological Analysis of Spermatogenesis Using the Mouse Model

Published on: February 6, 2018

Isolation of Murine Spermatogenic Cells using a Violet-Excited Cell-Permeable DNA Binding Dye
08:21

Isolation of Murine Spermatogenic Cells using a Violet-Excited Cell-Permeable DNA Binding Dye

Published on: January 14, 2021

Isolation and Cultivation of Neural Progenitors Followed by Chromatin-Immunoprecipitation of Histone 3 Lysine 79 Dimethylation Mark
10:09

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

Published on: January 26, 2018

Area of Science:

  • Reproductive Biology
  • Molecular Biology
  • Genetics

Background:

  • Spermatogenesis involves extensive chromatin remodeling, including histone replacement by transition proteins and protamines.
  • This reorganization is vital for paternal genome compaction and DNA protection.
  • Histone ubiquitination is implicated in sex chromosome inactivation and nucleosome removal, but regulatory mechanisms remain unclear.

Purpose of the Study:

  • To investigate the role of the ubiquitin ligase RNF8 in spermatogenesis.
  • To elucidate the mechanisms by which RNF8 influences chromatin remodeling during sperm development.

Main Methods:

  • Utilized RNF8-deficient mice models.
  • Analyzed meiotic sex chromosome inactivation (MSCI) proficiency.
  • Assessed global nucleosome removal processes.
  • Examined RNF8-dependent histone ubiquitination and H4K16 acetylation.

Main Results:

  • RNF8-deficient mice maintained MSCI proficiency.
  • RNF8 deficiency resulted in impaired global nucleosome removal.
  • RNF8-dependent histone ubiquitination was shown to induce H4K16 acetylation.
  • H4K16 acetylation may initiate nucleosome removal.

Conclusions:

  • RNF8 is essential for global nucleosome removal during spermatogenesis.
  • RNF8-mediated histone ubiquitination triggers trans-histone acetylation (H4K16ac).
  • This pathway is critical for proper chromatin reorganization in sperm development.