Description
SS-31
| CAS Number |
736992‑21‑5 |
| Alias |
SS‑31, Elamipretide, Bendavia, MTP‑131; D‑Arg‑2,6‑dimethylTyr‑Lys‑Phe‑NH₂ |
| IUPAC Name |
(2S)-6‑Amino‑2‑[[(2S)-2‑[[(2R)-2‑amino‑5‑(diaminomethylideneamino)pentanoyl]amino]‑3‑(4‑hydroxy‑2,6‑dimethylphenyl)propanoyl]amino]‑N‑[(2S)-1‑amino‑1‑oxo‑3‑phenylpropan‑2‑yl]hexanamide |
| Molecular Formula |
C₃₂H₄₉N₉O₅ |
| Molecular Weight |
639.8 g/mol |
SS‑31
SS‑31, is a synthetic tetrapeptide (D‑Arg‑dimethylTyr‑Lys‑Phe‑NH₂) widely studied in in vitro and in vivo models for its interactions with mitochondrial membranes. Classified as a mitochondria-targeting peptide (MTP), SS‑31 is characterized by its ability to associate with cardiolipin-rich regions of the inner mitochondrial membrane under controlled experimental conditions.
Mechanistic Insights (Experimental Models Only)
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Cardiolipin Interaction
SS‑31 has been shown to localize to the inner mitochondrial membrane and engage with cardiolipin, a phospholipid involved in membrane curvature and mitochondrial bioenergetics.
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Mitochondrial Dynamics
In research models, SS‑31 may influence mitochondrial membrane stability and support redox homeostasis by interacting with electron transport complexes.
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Oxidative Stress Parameters
SS‑31 is frequently studied in relation to reactive oxygen species (ROS), where it may modulate oxidative markers in cellular and tissue-based systems.
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Bioenergetic Indicators
Experimental use of SS‑31 includes assessment of ATP production, membrane potential, and related metabolic outputs in isolated mitochondria or cultured cells.
Key Benefits of SS-31 Research:
- Mitochondrial Protection: Targets and binds to cardiolipin to stabilize mitochondrial membranes and enhance mitochondrial function.
- Reduction of Oxidative Stress: Mitigates reactive oxygen species (ROS) production, reducing oxidative damage to cells.
- Improved Energy Production: Enhances ATP synthesis by preserving mitochondrial efficiency.
- Anti-Apoptotic Effects: Protects cells from programmed cell death in models of mitochondrial dysfunction.
- Potential Neuroprotective Properties: Demonstrates benefits in preclinical models of neurodegenerative diseases like Parkinson’s and Alzheimer’s.
- Cardioprotective Effects: Improves heart function and reduces damage in models of ischemia-reperfusion injury and heart failure.
- Anti-Inflammatory Action: Reduces mitochondrial-driven inflammation in disease models.
- Applications Across Diseases: Studied for use in various conditions, including muscular dystrophy, chronic kidney disease, and aging-related decline.
These benefits highlight SS-31’s potential as a tool for understanding mitochondrial dysfunction and its role in degenerative diseases.
Chemical Structure

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