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Related Experiment Video

Updated: May 21, 2026

Dissecting Multi-protein Signaling Complexes by Bimolecular Complementation Affinity Purification (BiCAP)

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Published on: June 15, 2018

p97 complexes as signal integration hubs.

¹Centre for Medical Biotechnology, Faculty of Biology, University of Duisburg-Essen, 45117 Essen, Germany. hemmo.meyer@uni-due.de

|June 15, 2012

Summary

The UBXD7 adapter protein is crucial for coordinating protein ubiquitylation and extraction by the p97 ATPase, impacting proteasome degradation pathways. This highlights complex roles for adapters in cellular signaling.

Area of Science:

Cellular Biology
Molecular Mechanisms
Protein Degradation

Background:

The ubiquitin-proteasome system (UPS) degrades ubiquitylated proteins.
AAA+ ATPase p97 (VCP/Cdc48) extracts substrates from membranes/complexes for degradation.
Ubiquitin adapters link p97 to its client proteins.

Discussion:

UBXD7 acts beyond a simple linker, coordinating ubiquitylation and p97 extraction.
This coordination is vital for efficient proteasome substrate processing.
Recent studies, including Bandau et al. in BMC Biology, reveal UBXD7's multifaceted role.

Key Insights:

UBXD7 is essential for synchronizing ubiquitylation and p97-mediated extraction.
Adapters play active roles in regulating p97 signaling pathways.

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This discovery deepens our understanding of proteasome substrate targeting.

Outlook:

Further investigation into UBXD7's mechanism is warranted.
Exploring other adapters' roles in p97-mediated signaling.
Potential therapeutic targets in UPS-related diseases.