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Updated: May 6, 2026
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Functional Characterization of RING-Type E3 Ubiquitin Ligases In Vitro and In Planta
Published on: December 5, 2019
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Building and remodelling Cullin-RING E3 ubiquitin ligases.
John R Lydeard1, Brenda A Schulman, J Wade Harper
1Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA.
EMBO Reports
|November 16, 2013
Summary
Cullin-RING E3 ubiquitin ligases (CRLs) dynamically regulate cell signaling by attaching ubiquitin to proteins. Their activity is controlled by neddylation cycles and changing substrate receptors.
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- Cullin-RING E3 ubiquitin ligases (CRLs) are crucial regulators of cellular signaling pathways.
- CRLs function through targeted ubiquitylation of signaling proteins, mediated by modular substrate receptors.
Purpose of the Study:
- To review the dynamic control mechanisms governing CRL activity.
- To emphasize the integration of cullin neddylation cycles with substrate receptor exchange.
Main Methods:
- Literature review of recent research on CRL regulation.
- Analysis of mechanisms controlling CRL architecture and activity.
- Focus on neddylation/deneddylation cycles and receptor module dynamics.
Main Results:
- CRL activity is modulated by dynamic changes in their architecture.
- Neddylation and deneddylation cycles are central to CRL regulation.
- Substrate receptor exchange allows CRLs to adapt to cellular needs.
Conclusions:
- Dynamic control of CRLs is essential for cellular protein turnover.
- Integration of neddylation cycles and receptor exchange provides a flexible regulatory system.
- Understanding these mechanisms is key to deciphering cellular signaling.
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