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Updated: May 24, 2026
06:06
In Vitro Analysis of E3 Ubiquitin Ligase Function
Published on: May 14, 2021
Ubiquitin-like proteins.
Annemarthe G van der Veen1, Hidde L Ploegh
1Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02142, USA. ploegh@wi.mit.edu
Annual Review of Biochemistry
|March 13, 2012
Summary
Ubiquitin-like proteins (UBLs) share structural features with ubiquitin but regulate diverse cellular processes. Recent discoveries reveal novel UBL substrates, expanding their roles in cell homeostasis and physiology.
Area of Science:
- Molecular Biology
- Cell Biology
- Biochemistry
Background:
- The eukaryotic ubiquitin family includes nearly 20 proteins involved in posttranslational modification.
- Ubiquitin-like proteins (UBLs) share the characteristic β-grasp fold with ubiquitin (Ub).
- Despite structural similarities, UBLs regulate a wide array of cellular functions.
Purpose of the Study:
- To review recent findings on novel substrates of UBLs.
- To explore the mechanisms and functions of UBL pathways.
- To highlight the expanding roles of UBLs in cellular homeostasis and physiology.
Main Methods:
- Literature review of recent studies on UBLs.
- Analysis of identified novel UBL substrates.
- Synthesis of current understanding of UBL pathway functions.
Main Results:
- UBLs regulate diverse cellular processes including nuclear transport, proteolysis, translation, autophagy, and antiviral pathways.
- New UBL substrates are continuously being identified.
- These discoveries expand the known functional diversity of UBL pathways.
Conclusions:
- UBL pathways play critical roles in maintaining cellular homeostasis and physiological functions.
- Ongoing research continues to uncover new substrates and functions for UBLs.
- The ubiquitin-like protein family represents a key regulatory network in eukaryotic cells.
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