When exploring peptide research, two compounds that often attract attention are SS-31 and MOTS-C. Although both are associated with mitochondrial research and cellular energy processes, they are structurally different and are being investigated for different biological mechanisms.
What is SS-31?
SS-31 (Elamipretide) is a mitochondria-targeted tetrapeptide. Research has focused on its interaction with mitochondrial membranes, particularly cardiolipin, a lipid that plays an important role in mitochondrial structure and function.
Because of this mitochondrial targeting, SS-31 has been investigated in areas including:
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Mitochondrial membrane function
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Cellular energy production
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Oxidative stress
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Mitochondrial stability
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Cellular metabolism
SS-31 is particularly interesting in research because it is designed to act directly at the mitochondria rather than simply circulating throughout the cell.
What is MOTS-C?
MOTS-C is a naturally occurring peptide encoded by mitochondrial DNA. It belongs to a group of peptides known as mitochondrial-derived peptides (MDPs).
Research on MOTS-C has focused primarily on its potential role in metabolic regulation and cellular responses to metabolic stress.
Areas being investigated include:
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Glucose and energy metabolism
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Metabolic signaling
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Cellular stress responses
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Exercise-related metabolic adaptations
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Mitochondrial and cellular homeostasis
Unlike SS-31, MOTS-C is a naturally occurring mitochondrial-derived signaling peptide.
SS-31 vs. MOTS-C: Key Differences
| Feature | SS-31 | MOTS-C |
|---|---|---|
| Full name | Elamipretide | Mitochondrial-derived peptide MOTS-C |
| Origin | Synthetic peptide | Naturally occurring mitochondrial-derived peptide |
| Main research focus | Mitochondrial membrane and cardiolipin interactions | Metabolic signaling and cellular energy regulation |
| Mitochondrial connection | Directly targets mitochondria | Encoded by mitochondrial DNA |
| Research areas | Mitochondrial function, oxidative stress, cellular energy | Metabolism, glucose regulation, cellular stress responses |
Which one is better?
There isn't a simple answer because SS-31 and MOTS-C are being investigated for different mechanisms.
If your research interest is primarily mitochondrial membrane function and mitochondrial stability, SS-31 is particularly relevant.
If your interest is metabolic signaling, energy regulation and the biological role of mitochondrial-derived peptides, MOTS-C may be more relevant.
The two should therefore not be viewed as interchangeable compounds.
Important: Research Use Only
SS-31 and MOTS-C are subjects of scientific research, and research findings should not be interpreted as proof of safety or effectiveness for treating, preventing, or diagnosing medical conditions.
Our products are intended for laboratory research purposes only and are not intended for human or veterinary use.
SS-31 vs. MOTS-C in one sentence
SS-31 is primarily studied as a mitochondria-targeted peptide that interacts with mitochondrial membranes, while MOTS-C is a naturally occurring mitochondrial-derived peptide being investigated mainly for metabolic and cellular signaling.