SS-31 — Scientific background
Elamipretide • Mitochondrial-Targeted Research Peptide
Scientific background describes the compound, not verified results or quality claims for the supplied vial. Research purposes only; not for human consumption. No self-administration or injection. Research findings do not guarantee individual results.
SS-31, also known as elamipretide or MTP-131, is a synthetic mitochondria-targeted tetrapeptide being investigated for its potential effects on mitochondrial structure, cellular energy production and oxidative stress.
Unlike peptides that primarily act through cell-surface receptors, SS-31 is specifically designed to localise within mitochondria, where it interacts with mitochondrial membrane components, particularly cardiolipin.
This distinctive mechanism has made SS-31 an important subject of research in mitochondrial biology, cellular energetics, oxidative stress and age-related cellular dysfunction.
What Is SS-31?
SS-31 is a synthetic tetrapeptide with the sequence:
D-Arg-Dmt-Lys-Phe-NH₂
It belongs to a class of mitochondria-targeted peptides designed to reach the inner mitochondrial membrane.
The peptide's interaction with cardiolipin, a phospholipid highly concentrated in the inner mitochondrial membrane, is central to its proposed mechanism.
Cardiolipin helps maintain the organisation and function of mitochondrial membranes and respiratory-chain complexes.
How SS-31 Works
1. Mitochondrial Targeting
SS-31 is designed to preferentially accumulate within mitochondria.
This allows researchers to investigate mitochondrial processes directly rather than relying primarily on extracellular or cell-surface signalling.
Cell → Mitochondria → Inner mitochondrial membrane
2. Cardiolipin Interaction
One of the defining characteristics of SS-31 is its interaction with cardiolipin.
Cardiolipin contributes to:
- Mitochondrial membrane structure
- Organisation of respiratory-chain complexes
- Electron transport
- Mitochondrial energy production
- Maintenance of mitochondrial membrane integrity
Research suggests that SS-31 may stabilise cardiolipin-associated mitochondrial structures and influence mitochondrial function.
3. Oxidative Stress Research
Mitochondria are an important source of reactive oxygen species (ROS).
Excessive oxidative stress can contribute to cellular damage.
SS-31 has therefore been investigated for its potential ability to influence mitochondrial oxidative stress and redox balance.
Research has explored whether the peptide can reduce oxidative damage while supporting mitochondrial function.
4. Cellular Energy Production
Healthy mitochondria are central to ATP production, the primary energy currency of cells.
SS-31 research has investigated potential effects on:
- Electron transport
- Mitochondrial respiration
- ATP production
- Membrane potential
- Cellular energy efficiency
This is one of the reasons SS-31 has attracted interest in conditions associated with mitochondrial dysfunction.
Mitochondrial Research
Mitochondria are responsible for many critical cellular functions, including:
Nutrients → Electron transport → Proton gradient → ATP production
When mitochondrial function is impaired, cellular energy production can become less efficient.
SS-31 is being investigated for its ability to interact directly with mitochondrial structures and potentially support mitochondrial bioenergetics.
Areas Under Investigation
SS-31/elamipretide has been investigated in a variety of mitochondrial and metabolic research areas, including:
- Mitochondrial dysfunction
- Cellular energy metabolism
- Oxidative stress
- Cardiovascular biology
- Skeletal-muscle function
- Neurodegenerative conditions
- Age-related mitochondrial dysfunction
- Kidney disease
- Rare mitochondrial disorders
Importantly, these represent research areas rather than established therapeutic indications.
SS-31 vs MOTS-c
Both peptides are associated with mitochondrial biology, but their mechanisms are substantially different.
SS-31 MOTS-c
Type Synthetic tetrapeptide Mitochondrial-derived peptide
Primary focus Mitochondrial membrane/function Metabolic signalling
Mitochondrial targeting Directly targeted Not primarily classified this way
Key research target Cardiolipin AMPK/metabolic pathways
Research areas Mitochondrial bioenergetics & oxidative stress Metabolism & exercise biology
The distinction is important: SS-31 is specifically engineered to target mitochondria, whereas MOTS-c is a naturally occurring mitochondrial-derived signalling peptide.
Product Information
Compound: SS-31
Generic name: Elamipretide
Development code: MTP-131
Peptide type: Synthetic tetrapeptide
Sequence: D-Arg-Dmt-Lys-Phe-NH₂
Primary target: Mitochondrial membrane / cardiolipin
Research focus: Mitochondrial function and cellular bioenergetics
Catalogue status: Research material; not a claim of pharmaceutical approval
Why SS-31 Is Scientifically Interesting
Many research compounds influence mitochondrial function indirectly.
SS-31 takes a different approach by being specifically designed to reach mitochondria and interact with cardiolipin.
This makes it particularly interesting for researchers studying the relationship between:
Mitochondrial structure
↓
Electron transport
↓
Oxidative stress
↓
ATP production
↓
Cellular function
Its mechanism has made SS-31 one of the better-known experimental peptides within mitochondrial research.
Not intended to diagnose, treat, cure or prevent any disease. This information is educational and does not constitute medical advice. Refer to the product’s safety risks above and request batch-specific documentation.
