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Updated: Feb 28, 2026

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Published on: February 7, 2018
Oxidised protein metabolism: recent insights
Oxygen damages cells, but aerobic life needs it. This review covers how cells manage oxygen-damaged proteins using proteasomal and lysosomal systems, and mitochondrial proteases.
Area of Science:
- Cellular Biology
- Biochemistry
- Oxidative Stress
Background:
- Oxygen is essential for aerobic life but generates reactive species that damage proteins.
- Cells must have mechanisms to repair or degrade oxidatively damaged proteins.
Purpose of the Study:
- To review recent insights into the metabolism of oxidatively damaged proteins.
- To highlight the roles of cellular proteolytic systems in managing oxidative damage.
Main Methods:
- Literature review of recent research on protein oxidation and degradation.
- Focus on proteasomal, lysosomal, and mitochondrial proteolytic pathways.
Main Results:
- Proteasomal and lysosomal systems are key in degrading oxidatively damaged proteins.
- Oxidative damage can impair the function of these proteolytic pathways.
- Mitochondrial proteolytic machinery, including AAA+ proteases, is crucial for handling oxygen radicals.
Conclusions:
- Understanding the detection and degradation of oxidised proteins is an active research area.
- Interactions between different proteolytic pathways are complex and important.
- Unanswered questions remain, including potential self-perpetuating cycles of oxidation.
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