SS-31 Peptide – Comprehensive Research Guide, Mechanism, Benefits & Mitochondrial Research

What Is SS-31 Peptide?

SS-31 peptide, also known as elamipretide or MTP-131, is a synthetic mitochondria-targeted tetrapeptide investigated for its effects on mitochondrial structure, bioenergetics, oxidative processes, and cellular function.

Unlike many peptides that primarily act through receptors on the cell surface, SS-31 has been designed to target the inner mitochondrial membrane. Research has shown that the compound interacts with cardiolipin, a specialized phospholipid concentrated within the inner mitochondrial membrane.

This unique targeting mechanism has made SS-31 an important subject of research involving mitochondrial dysfunction, cellular energy production, oxidative stress, cardiovascular biology, skeletal muscle, neuroscience, and aging-related changes.

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SS-31, Elamipretide, and MTP-131

You may encounter several names when researching this compound:

• SS-31
• Elamipretide
• MTP-131
• Bendavia

These names refer to the same investigational compound. Including these terms naturally on your website can help visitors connect information from scientific publications with your product page.

ClinicalTrials.gov also identifies elamipretide by the names MTP-131 and SS-31.

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SS-31 Peptide Structure

SS-31 is a tetrapeptide, meaning it contains four amino-acid-derived components. Its commonly reported sequence is:

D-Arg-Dmt-Lys-Phe-NH₂

The Dmt component refers to dimethyltyrosine.

Its relatively small structure and amphipathic characteristics contribute to its ability to interact with mitochondrial membranes. Research investigating SS-31’s membrane interactions has found that its association with lipid membranes is influenced by electrostatic properties and lipid composition.

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How Does SS-31 Work?

The mechanism of SS-31 is centered on its ability to reach mitochondria and interact with cardiolipin.

A simplified pathway is:

SS-31 → mitochondrial targeting → cardiolipin interaction → mitochondrial membrane effects → investigation of bioenergetic function

Cardiolipin is particularly important because it helps organize the inner mitochondrial membrane and supports proteins involved in the electron transport chain.

Research suggests that SS-31-cardiolipin interactions can influence mitochondrial membrane properties, respiratory-chain organization, oxidative processes, and cellular bioenergetics.

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What Is Cardiolipin?

Cardiolipin is a distinctive phospholipid found predominantly in the inner mitochondrial membrane.

It contributes to:

• Mitochondrial membrane organization
• Cristae structure
• Respiratory-chain function
• Protein-lipid interactions
• Oxidative phosphorylation
• Mitochondrial energy production

Because Cardiolipin is so closely connected with mitochondrial structure and function, it has become an important target in mitochondrial research.

SS-31’s ability to selectively interact with cardiolipin is one of the main characteristics distinguishing it from many conventional antioxidant compounds.

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SS-31 and Mitochondrial Function

Mitochondria are often described as the cell’s primary energy-producing organelles because they generate ATP through oxidative phosphorylation.

Healthy mitochondrial function depends on coordinated activity involving:

• The electron transport chain
• Mitochondrial membrane potential
• ATP synthase
• Oxygen consumption
• Cardiolipin organization
• Redox balance

Research involving SS-31 peptide has investigated whether targeting the mitochondrial inner membrane can influence these processes.

A 2025 review describes elamipretide as a mitochondria-targeting peptide whose cardiolipin interactions may influence mitochondrial structure, membrane electrostatics, and bioenergetics.

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SS-31 and ATP Production

ATP, or adenosine triphosphate, provides usable energy for many cellular processes.

Mitochondria generate ATP through oxidative phosphorylation. When mitochondrial bioenergetics are disrupted, ATP production can become less efficient.

SS-31 research has examined mitochondrial respiration and ATP-related processes because of the compound’s interaction with cardiolipin and mitochondrial membrane structures.

Experimental research has reported effects involving mitochondrial bioenergetics, although the significance of these findings varies according to the model and study design.

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SS-31 Peptide and Oxidative Stress

Mitochondrial oxidative processes naturally generate reactive oxygen species. Under certain conditions, excessive oxidative stress can affect cellular proteins, lipids, membranes, and DNA.

SS-31 has been investigated in relation to mitochondrial oxidative stress because its target is located close to the site where mitochondrial reactive oxygen species are generated.

Research areas include:

• Reactive oxygen species
• Cardiolipin oxidation
• Lipid peroxidation
• Mitochondrial membrane integrity
• Redox signaling
• Oxidative damage

It is more accurate to describe SS-31 as a mitochondria-targeted research peptide than simply calling it a conventional antioxidant.

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SS-31 Peptide and Mitochondrial Cristae

The inner mitochondrial membrane contains specialized folds known as cristae.

These structures increase the membrane’s surface area and help organize proteins involved in oxidative phosphorylation.

Because cardiolipin contributes to mitochondrial membrane architecture, researchers have investigated whether SS-31 can influence cristae organization and respiratory-chain structures.

This is an important part of the proposed mechanism behind the compound’s mitochondrial research profile.

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Potential Research Benefits of SS-31 peptide

For an evidence-based website, it is better to describe these as potential research applications rather than guaranteed benefits.

1. Mitochondrial Function Research

SS-31 is studied to better understand mitochondrial bioenergetics and membrane function.

2. Oxidative Stress Research

Researchers investigate its relationship with mitochondrial reactive oxygen species and oxidative processes.

3. Cardiolipin Research

Its interaction with cardiolipin makes SS-31 particularly relevant to mitochondrial membrane research.

4. Cellular Energy Research

Studies examine mitochondrial respiration and ATP production.

5. Muscle Biology

Because skeletal muscle has substantial energy requirements, mitochondrial function is an important area of muscle research.

6. Cardiovascular Research

Researchers have investigated mitochondrial dysfunction in cardiovascular models, including heart failure and ischemia-related injury.

7. Neuroscience Research

Mitochondria are essential to neuronal energy metabolism, creating interest in mitochondria-targeted research approaches.

8. Aging Research

Changes in mitochondrial function are associated with aging biology, making SS-31 relevant to experimental aging studies.

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SS-31 Peptide and Muscle Research

Skeletal muscle requires substantial amounts of ATP, particularly during physical activity.

Consequently, mitochondrial respiration is an important component of muscle biology.

Research involving elamipretide has investigated mitochondrial function in skeletal muscle and age-related muscle changes. Experimental animal work has reported improvements in cardiac and skeletal muscle function during aging, although such findings should not be automatically translated into human outcomes.

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SS-31 Peptide and Cardiovascular Research

The heart has exceptionally high energy requirements and relies heavily on mitochondrial ATP production.

This has made mitochondrial dysfunction an important area of cardiovascular research.

SS-31/elamipretide has been investigated in experimental cardiovascular models involving:

• Heart failure
• Cardiac mitochondrial dysfunction
• Oxidative stress
• Ischemia-reperfusion injury
• Cardiac remodeling
• Mitochondrial bioenergetics

Preclinical research has produced promising findings, while clinical research has continued to evaluate the compound’s safety and effectiveness in specific conditions.

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SS-31 and Neurological Research

Neurons have substantial energy requirements and depend heavily on mitochondrial function.

Researchers have therefore investigated mitochondrial-targeted compounds in models involving neurological and neurodegenerative processes.

SS-31 research has explored:

• Neuronal mitochondrial function
• Cellular energy metabolism
• Oxidative stress
• Mitochondrial signaling
• Age-related mitochondrial changes

These remain research areas rather than established general treatments.

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SS-31 Peptide and Aging Research

Mitochondrial dysfunction is closely associated with several biological processes involved in aging.

Researchers have investigated SS-31 in aging models to examine whether improving mitochondrial bioenergetics can influence functional changes in tissues.

Animal research has reported improvements in certain cardiac and skeletal muscle measures during aging, but researchers continue to distinguish molecular or tissue effects from broader claims about lifespan or human anti-aging effects.

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SS-31 and Barth Syndrome Research

An important area of elamipretide research involves Barth syndrome, a rare mitochondrial disorder associated with abnormalities in cardiolipin remodeling.

This is particularly relevant because cardiolipin is a primary target of elamipretide.

Importantly, the regulatory landscape has changed: a 2026 PubMed-indexed review reports that the FDA granted accelerated approval for elamipretide for Barth syndrome in September 2025, making this an important distinction from describing SS-31 as simply an unapproved research compound.

For your website, this section should therefore be kept separate from general research-use claims and updated carefully as regulatory information changes.

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SS-31 Clinical Research

Elamipretide has been investigated in several clinical research programs involving mitochondrial and cardiovascular conditions.

Clinical research has included areas such as:

• Primary mitochondrial myopathy
• Barth syndrome
• Friedreich’s ataxia
• Cardiovascular disease
• Age-related conditions
• Mitochondrial dysfunction

ClinicalTrials.gov lists elamipretide/SS-31 as an investigational intervention in mitochondrial disease research, including Friedreich’s ataxia.

The existence of clinical trials does not mean that every proposed use has been demonstrated to be effective.

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SS-31 vs Conventional Antioxidants

One interesting feature of SS-31 is its subcellular targeting.

Conventional antioxidants may distribute more broadly throughout cells, whereas SS-31 has been developed to concentrate at mitochondrial membranes and interact with cardiolipin.

This distinction is important when explaining the compound’s research rationale:

Conventional antioxidant research: broader cellular distribution

SS-31 research: mitochondrial targeting and cardiolipin interaction

This targeted approach is one reason SS-31 continues to attract scientific interest.

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SS-31 vs Other Mitochondrial Peptides

SS-31 belongs to the broader family of Szeto-Schiller (SS) peptides.

What makes SS-31 particularly notable is its combination of:

• Small tetrapeptide structure
• Mitochondrial targeting
• Cardiolipin interaction
• Membrane association
• Bioenergetic research applications

These characteristics distinguish it from many peptides that operate primarily through extracellular receptors.

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Is SS-31 a Peptide?

Yes. SS-31 is a synthetic tetrapeptide.

Its commonly reported sequence is D-Arg-Dmt-Lys-Phe-NH₂

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Is SS-31 the Same as Elamipretide?

Yes. SS-31 is also known as elamipretide and MTP-131.

Using these alternative names in your website content can help visitors who arrive through different scientific search terms.

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What Makes SS-31 Different?

The primary distinction is its mitochondrial targeting mechanism.

Instead of simply circulating throughout the cell and interacting with a conventional receptor, SS-31 is designed to accumulate at mitochondrial membranes and interact with cardiolipin.

This gives researchers an opportunity to study mitochondrial membrane biology directly.

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SS-31 Research Product Quality

If you are presenting SS-31 on a research website, include a dedicated section explaining how researchers can evaluate product quality.

Important documentation may include:

Certificate of Analysis

A COA can document the analytical testing associated with a particular batch.

Purity

Purity data can help researchers determine whether a material meets their experimental requirements.

Identity

Clear identification helps distinguish SS-31 from other mitochondrial peptides.

Batch Information

Lot numbers improve research traceability and reproducibility.

Storage Information

Clear storage instructions help researchers maintain material integrity.

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SS-31 Research Limitations

A high-quality research page should also discuss limitations.

Laboratory findings, animal studies, and human clinical trials provide different levels of evidence. A result observed in a cell culture or animal model does not necessarily predict the same outcome in humans.

Researchers should consider:

• Study design
• Experimental model
• Dose and exposure
• Duration
• Biological endpoint
• Reproducibility
• Clinical relevance
• Long-term safety

This makes your content more credible than a page containing only promotional claims.

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Frequently Asked Questions About SS-31

What is SS-31 peptide?

SS-31 is a synthetic mitochondria-targeted tetrapeptide investigated for its interactions with mitochondrial membranes and cardiolipin.

What is SS-31 also called?

SS-31 is also known as elamipretide, MTP-131, and Bendavia.

What does SS-31 target?

Research indicates that SS-31 selectively interacts with cardiolipin in the inner mitochondrial membrane.

What is cardiolipin?

Cardiolipin is a specialized phospholipid that helps maintain mitochondrial membrane structure and supports respiratory-chain function.

Is SS-31 an antioxidant?

SS-31 has been investigated in relation to mitochondrial oxidative stress, but its mechanism is more accurately described as mitochondria targeting and cardiolipin interaction rather than simply conventional antioxidant activity.

What is SS-31 studied for?

Research has investigated SS-31 in mitochondrial biology, oxidative stress, cellular bioenergetics, muscle, cardiovascular biology, neuroscience, aging, and mitochondrial diseases.

Is SS-31 FDA approved?

The answer depends on the specific indication. As of 2026, PubMed-indexed literature reports FDA accelerated approval of elamipretide for Barth syndrome in September 2025. It should not therefore be described as a broadly approved treatment for every condition discussed in research.

Is SS-31 the same as MTP-131?

Yes. MTP-131 is another name used for elamipretide/SS-31 in clinical research.

Is SS-31 available in bulk quantities?

Yes. We provide scalable manufacturing with volume-based pricing.

Do you provide Certificates of Analysis?

Yes. Each batch includes verifiable COA documentation.

Do you ship within the USA?

Yes. Orders are fulfilled through our U.S. distribution channel.

What purity level is provided?

≥98% purity verified via HPLC (higher specifications available upon request).

SS-31 Peptide (Elamipretide) Peptide for Sale – High Purity Research Compound USA

If you are searching for SS-31 peptide (Elamipretide) peptide for sale, sourcing from a verified manufacturer is essential to ensure purity, consistency, and reliable research outcomes. We are a licensed peptide manufacturer supplying high-quality research compounds for mitochondrial biology studies, oxidative stress research, and cellular energy pathway analysis.

We operate under controlled laboratory standards.
We verify purity through analytical testing.
We provide full documentation for every production batch.

SS-31 (Elamipretide) is a mitochondria-targeted tetrapeptide designed to selectively interact with cardiolipin in the inner mitochondrial membrane. It is widely utilized in research involving mitochondrial function, ATP production, reactive oxygen species (ROS) regulation, and cellular bioenergetics.

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Key Benefits

• Mitochondrial Function Research – Supports studies involving energy production and membrane integrity
• Oxidative Stress Analysis – Applicable in ROS regulation and cellular protection research
• ATP Production Studies – Useful for investigating bioenergetic efficiency and metabolic activity
• Cardiolipin Interaction Research – Targets inner mitochondrial membrane dynamics
• Stable Peptide Profile – Designed for consistency and reproducibility in laboratory environments

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What You Receive

• ≥98% purity (HPLC verified)
• Analytical validation (HPLC + Mass Spectrometry)
• Certificate of Analysis (COA) available per batch
• Laboratory-secured packaging
• Available in small batch or bulk wholesale quantities

Direct manufacturer sourcing ensures product integrity, traceability, and consistent long-term supply.

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Bulk SS-31 peptide(Elamipretide) Peptide Supply

We support:

• Biotechnology research laboratories
• Pharmaceutical R&D organizations
• Academic research institutions
• Contract research organizations (CROs)
• International peptide distributors

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Why Professional Buyers Choose Us

• Transparent manufacturing processes
• Verified analytical testing
• Consistent batch-to-batch quality
• Competitive wholesale pricing
• Reliable U.S. and international fulfillment

We combine advanced peptide synthesis capabilities with a global distribution network, ensuring dependable research-grade supply at scale.

Final Thoughts on SS-31 Peptide

SS-31 peptide (elamipretide/MTP-131) is an important mitochondria-targeted research compound because of its interaction with cardiolipin and the inner mitochondrial membrane. Research has explored its relationship with mitochondrial bioenergetics, oxidative stress, ATP production, membrane structure, muscle biology, cardiovascular research, neuroscience, aging, and mitochondrial disease.