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Updated: Jul 29, 2025

Quantitative Methods to Study Protein Arginine Methyltransferase 1-9 Activity in Cells
Published on: August 7, 2021
Methyltransferase Set7/9 as a Multifaceted Regulator of ROS Response
Alexandra Daks1, Oleg Shuvalov1, Olga Fedorova1
1Institute of Cytology, Russian Academy of Sciences, 194064, St Petersburg, Russian Federation.
Abstract:
Reactive oxygen species (ROS) induce multiple signaling cascades in the cell and hence play an important role in the regulation of the cell's fate. ROS can cause irreversible damage to DNA and proteins resulting in cell death. Therefore, finely tuned regulatory mechanisms exist in evolutionarily diverse organisms that are aimed at the neutralization of ROS and its consequences with respect to cellular damage. The SET domain-containing lysine methyltransferase Set7/9 (KMT7, SETD7, SET7, SET9) post-translationally modifies several histones and non-histone proteins via monomethylation of the target lysines in a sequence-specific manner. In cellulo, the Set7/9-directed covalent modification of its substrates affects gene expression, cell cycle, energy metabolism, apoptosis, ROS, and DNA damage response. However, the in vivo role of Set7/9 remains enigmatic. In this review, we summarize the currently available information regarding the role of methyltransferase Set7/9 in the regulation of ROS-inducible molecular cascades in response to oxidative stress. We also highlight the in vivo importance of Set7/9 in ROS-related diseases.
Insights
The enzyme Set7/9 regulates cellular responses to reactive oxygen species (ROS) and oxidative stress. This review explores Set7/9
Area of Science:
- Cellular Biology
- Biochemistry
- Molecular Biology
Background:
- Reactive oxygen species (ROS) are critical signaling molecules that also cause cellular damage.
- Mechanisms for neutralizing ROS and mitigating damage are essential for cell survival.
- The SET domain-containing lysine methyltransferase Set7/9 modifies proteins, impacting cellular processes.
Purpose of the Study:
- To review the role of Set7/9 in regulating ROS-inducible signaling cascades.
- To summarize Set7/9's function in response to oxidative stress.
- To highlight the in vivo significance of Set7/9 in ROS-related diseases.
Main Methods:
- Literature review of existing studies on Set7/9 and oxidative stress.
- Analysis of Set7/9's known functions in gene expression, cell cycle, and apoptosis.
- Compilation of evidence regarding Set7/9's involvement in ROS-induced cellular events.
Main Results:
- Set7/9 post-translationally modifies histones and non-histone proteins via monomethylation.
- Set7/9 influences gene expression, cell cycle, metabolism, apoptosis, and DNA damage response.
- The in vivo role of Set7/9 in regulating ROS signaling is increasingly recognized.
Conclusions:
- Set7/9 plays a crucial role in cellular defense against oxidative stress.
- Understanding Set7/9's function is vital for addressing ROS-related pathologies.
- Further in vivo studies are needed to fully elucidate Set7/9's mechanisms.
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