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Updated: May 8, 2026

In Vitro Ubiquitination and Deubiquitination Assays of Nucleosomal Histones
Published on: July 25, 2019
Breaking the chains: structure and function of the deubiquitinases
David Komander1, Michael J Clague, Sylvie Urbé
1Medical Research Council, Laboratory of Molecular Biology, Hills Road, Cambridge, CB2 0QH, UK. dk@mrc-lmb.cam.ac.uk
Deubiquitinases (DUBs) are enzymes that remove ubiquitin, a key protein tag. These diverse enzymes are highly regulated, offering potential as novel therapeutic targets for various diseases.
Area of Science:
- Biochemistry
- Molecular Biology
- Cellular Regulation
Background:
- Ubiquitylation is a critical, reversible protein modification influencing numerous cellular processes.
- Deubiquitinases (DUBs) are an essential superfamily of proteases that reverse ubiquitylation.
- DUBs play vital roles in regulating key cellular functions.
Purpose of the Study:
- To characterize the deubiquitinase (DUB) superfamily.
- To explore the mechanistic diversity and regulatory mechanisms of DUBs.
- To identify DUBs as potential therapeutic targets.
Main Methods:
- Biochemical assays to characterize DUB activity.
- Structural biology to understand DUB mechanisms.
- Genetic and proteomic approaches to study DUB regulation.
Main Results:
- DUBs exhibit significant structural and functional diversity.
- Multiple regulatory layers modulate DUB activity and specificity.
- Despite a limited number, DUBs display high selectivity through regulation.
Conclusions:
- Deubiquitinating enzymes are crucial regulators of cellular processes.
- The intricate regulation of DUBs highlights their specificity.
- DUBs represent promising therapeutic targets due to their involvement in disease pathways.
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