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Related Experiment Video

Updated: May 24, 2026

Quantifying Subcellular Ubiquitin-proteasome Activity in the Rodent Brain

Quantifying Subcellular Ubiquitin-proteasome Activity in the Rodent Brain

Published on: May 21, 2019

Synaptic protein degradation in memory reorganization.

Bong-Kiun Kaang¹, Jun-Hyeok Choi

¹National Creative Research Initiative Center for Memory, Department of Biological Sciences, College of Natural Sciences, Seoul National University, 151-742 Seoul, South Korea. kaang@snu.ac.kr

Advances in Experimental Medicine and Biology

|February 22, 2012

Summary

The ubiquitin-proteasome system (UPS) degrades proteins, impacting neuronal function and memory. This system destabilizes reactivated memories, enabling memory reorganization and modification.

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Area of Science:

Neuroscience
Molecular Biology
Cellular Biology

Background:

The ubiquitin-proteasome system (UPS) is a critical cellular pathway regulating protein degradation.
The UPS plays a significant role in various neuronal functions, including synaptic plasticity.
Emerging evidence highlights the UPS's involvement in memory processes.

Purpose of the Study:

To elucidate the role of the UPS in neuronal function and synaptic activity.
To explore the UPS's function in the destabilization of reactivated memories.
To discuss the physiological implications of UPS-mediated memory destabilization and reorganization.

Main Methods:

Review of existing literature on the ubiquitin-proteasome system in neurons.
Analysis of mechanisms regulating UPS activity following synaptic stimulation.
Conceptual framework development for UPS-dependent memory reorganization.

Main Results:

The UPS regulates protein abundance crucial for neuronal function.
Synaptic activity modulates UPS-dependent protein degradation.
The UPS actively destabilizes reactivated memories, facilitating modification.

Conclusions:

The UPS is integral to neuronal function and synaptic regulation.
Protein degradation via the UPS is essential for memory destabilization and reorganization.
A hypothetical model is proposed for UPS-mediated memory modification.