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Related Concept Videos

Epigenetic Regulation01:46

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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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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.
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Riboswitches are RNA elements that regulate gene expression by altering their secondary structures in response to specific effector molecules. These elements, located in the leader regions of certain mRNAs, act as transcriptional regulators by toggling between alternative conformations to control downstream gene expression. Riboswitch-mediated regulation is a precise mechanism for modulating biosynthetic pathways, as exemplified by the riboflavin biosynthesis pathway in Bacillus...
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Updated: Apr 21, 2026

Pattern-based Search of Epigenomic Data Using GeNemo
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Decoding RNF20: an epigenetic modifier and beyond.

Jie Ren1, Weimei Ou1, Rui Gao1

  • 1Institute of Cardiovascular Diseases, Xiamen Cardiovascular Hospital of Xiamen University, School of medicine, Xiamen University, Xiamen, China.

Frontiers in Cell and Developmental Biology
|April 20, 2026
PubMed
Summary
This summary is machine-generated.

RNF20, an E3 ubiquitin ligase, is crucial for gene expression and embryonic development. Its dysregulation is linked to developmental disorders and cancers, highlighting its pathological significance.

Keywords:
E3 ligaseH2Bub1RNF20epigenetic regulationubiquitination

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Genetics

Background:

  • E3 ubiquitin ligases are vital for eukaryotic cellular processes.
  • RNF20 (RING finger E3 ubiquitin ligase 20) specifically targets histone H2B for monoubiquitination.
  • RNF20's role extends beyond histone modification to gene expression and development.

Purpose of the Study:

  • To review the physiological and pathological roles of RNF20.
  • To outline RNF20's cellular and molecular mechanisms of action.
  • To discuss the upstream regulation of RNF20 activity.

Main Methods:

  • Literature review of recent studies on RNF20.
  • Analysis of RNF20's involvement in embryonic development.
  • Examination of RNF20's link to human diseases like cancer and developmental disorders.

Main Results:

  • RNF20 is essential for normal embryonic development.
  • Misregulation of RNF20 activity contributes to various pathologies.
  • RNF20's function is controlled by upstream regulatory mechanisms.

Conclusions:

  • RNF20 is a key regulator of gene expression and development.
  • Understanding RNF20's function and regulation is critical for addressing associated diseases.
  • Further research into RNF20 provides insights into disease molecular mechanisms.