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Updated: Jan 25, 2026
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Profiling Ubiquitin and Ubiquitin-like Dependent Post-translational Modifications and Identification of Significant Alterations
Published on: November 7, 2019
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Poly(ADP-ribose)-dependent ubiquitination and its clinical implications.
Christina A Vivelo1, Vinay Ayyappan2, Anthony K L Leung3
1Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA.
Biochemical Pharmacology
|May 12, 2019
Summary
Poly(ADP-ribose)-dependent ubiquitination targets low-abundance proteins for degradation, impacting cellular processes and disease. This mechanism links ADP-ribosylation to protein turnover and cellular regulation.
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- ADP-ribosylation is a crucial post-translational modification involved in DNA repair, transcription, and RNA metabolism.
- Poly(ADP-ribose) (PAR) signals protein degradation via the ubiquitin-proteasome system.
- Dysregulation of ADP-ribosylation is linked to cancer, neurodegeneration, and infectious diseases.
Purpose of the Study:
- To review the biological mechanisms of poly(ADP-ribose)-dependent ubiquitination (PARdU).
- To identify substrates targeted by PARdU.
- To explore the relevance of PARdU in disease pathogenesis.
Main Methods:
- Bioinformatic analyses were employed to identify ubiquitinated substrates.
- Literature review of existing studies on ADP-ribosylation and ubiquitination.
Main Results:
- PARdU preferentially targets low-abundance proteins.
- These low-abundance proteins often function as rate-limiting factors in signaling and metabolic pathways.
- PARdU links protein modification to protein degradation pathways.
Conclusions:
- PARdU is a significant regulatory mechanism controlling protein turnover.
- Understanding PARdU offers therapeutic potential for diseases associated with protein homeostasis.
- Further research into PARdU substrates and pathways is warranted.
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