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In Vitro Ubiquitination and Deubiquitination Assays of Nucleosomal Histones
Published on: July 25, 2019
Nuclear export of mRNA and its regulation by ubiquitylation
Geetha Durairaj1, Pooja Garg, Sukesh R Bhaumik
1Department of Biochemistry and Molecular Biology, Southern Illinois University School of Medicine, Carbondale, IL, USA.
Abstract:
The export of mRNA from nucleus to cytoplasm is a key regulatory step in the expression of RNA polymerase II genes in eukaryotes, and thus, a variety of human diseases are manifested by abnormal mRNA export. Therefore, a large number of studies over many years have been directed towards elucidating the regulatory mechanisms of mRNA export. These studies have identified several mRNA export-associated factors and delineated their regulatory networks. Intriguingly, mRNA export has also been shown to be regulated by ubiquitylation, a post-translational modification that targets proteins for degradation or transport and has been linked to different cellular processes such as cell cycle progression, DNA repair, transcription and intracellular trafficking. While the mechanisms of actions of ubiquitylation in different cellular processes are relatively well-established, it is not clearly understood how mRNA export is regulated by ubiquitylation. Here, we highlight the recent advances of mRNA export and its regulation by ubiquitylation or the enzymes controlling this posttranslational modification.
Insights
mRNA export, crucial for gene expression, is regulated by ubiquitylation. This review highlights recent advances in understanding how ubiquitylation and its enzymes control mRNA export, impacting human diseases.
Area of Science:
- Molecular Biology
- Cell Biology
- Genetics
Background:
- Messenger RNA (mRNA) export from the nucleus to the cytoplasm is a critical regulatory step in gene expression for RNA polymerase II genes in eukaryotes.
- Dysregulation of mRNA export is implicated in various human diseases, prompting extensive research into its mechanisms.
- Ubiquitylation, a post-translational modification, is known to regulate diverse cellular processes, including protein degradation and trafficking.
Purpose of the Study:
- To review recent advancements in the field of mRNA export.
- To elucidate the role and regulatory mechanisms of ubiquitylation in mRNA export.
- To highlight the enzymes involved in ubiquitylation that control mRNA export.
Main Methods:
- Literature review of recent studies on mRNA export.
- Analysis of research on ubiquitylation and its association with cellular processes.
- Synthesis of findings on the interplay between ubiquitylation and mRNA export pathways.
Main Results:
- Several mRNA export-associated factors and their regulatory networks have been identified.
- Ubiquitylation has emerged as a significant regulator of mRNA export, though its precise mechanisms are still under investigation.
- Specific enzymes controlling ubiquitylation play a role in modulating mRNA export.
Conclusions:
- Understanding the regulation of mRNA export by ubiquitylation is crucial for deciphering its role in human diseases.
- Further research into ubiquitylation pathways controlling mRNA export is warranted.
- This review consolidates current knowledge, providing a foundation for future investigations into mRNA export regulation.
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