Related Experiment Video
Updated: Dec 18, 2025
08:55
Assessment of Submitochondrial Protein Localization in Budding Yeast Saccharomyces cerevisiae
Published on: July 19, 2021
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Mitochondrial protein interaction landscape of SS-31
Juan D Chavez1, Xiaoting Tang1, Matthew D Campbell2
1Department of Genome Sciences, University of Washington, Seattle, WA 98105.
Summary
Elamipretide (SS-31) targets cardiolipin in mitochondria, impacting ATP production and metabolism. This study identifies its protein interactors, offering mechanistic insights for mitochondrial therapies.
Area of Science:
- Biochemistry
- Molecular Biology
- Pharmacology
Background:
- Mitochondrial dysfunction is implicated in numerous diseases and aging.
- Therapeutics enhancing mitochondrial function are of significant interest.
- The precise mechanisms of elamipretide (SS-31), a mitochondrial-targeting tetrapeptide, remain unclear.
Purpose of the Study:
- To identify protein interactors of elamipretide (SS-31) within mitochondria.
- To elucidate the mechanistic basis of elamipretide's pharmacological effects.
- To understand elamipretide's interaction landscape in relation to cardiolipin.
Main Methods:
- Chemical cross-linking coupled with mass spectrometry was employed.
- Mitochondria were used as the biological system for analysis.
- Identification of proteins binding to elamipretide (SS-31).
Main Results:
- Elamipretide (SS-31) interacts with known cardiolipin-binding proteins.
- Identified interactors are involved in oxidative phosphorylation (ATP production) and 2-oxoglutarate metabolism.
- Cross-linking sites indicate binding regions near cardiolipin-protein interaction sites.
Conclusions:
- Elamipretide (SS-31) interacts with key mitochondrial proteins involved in energy metabolism.
- These findings provide mechanistic insights into elamipretide's therapeutic potential.
- The study illuminates the protein interaction network of elamipretide in mitochondria.
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