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Routine Peptides

Research monograph · mitochondria-targeted aromatic-cationic tetrapeptide (cardiolipin-binding)

SS-31Research monograph

Mitochondrial Function Studies

This monograph collects what the published literature reports about SS-31 — its mechanisms, the areas it is studied in, its molecular record and the sources behind them. It does not bind a receptor; it associates with cardiolipin, a phospholipid specific to that membrane and central to its structural integrity. Research examines mitochondrial function and cristae architecture.

For laboratory research use only — not for human or animal use

SS-31 research vial

Mechanisms

How SS-31 works

Inner Mitochondrial Membrane Stabilization

Cardiolipin Binding

Rather than binding a receptor it associates with cardiolipin, a phospholipid found only in the inner mitochondrial membrane and central to its structure. That specificity is what concentrates it there.

  • Binds cardiolipin at the inner membrane
  • Stabilises electron-transport supercomplexes
  • Cristae morphology restored in damaged mitochondria

Mitochondrial Reactive Oxygen Species Reduction

ROS Scavenging

Stabilising cristae architecture is reported to reduce electron leak — the proposed route to lowering ROS production at source rather than scavenging it afterwards.

  • The Dmt residue provides targeted antioxidant capacity
  • Mitochondrial superoxide generation reduced
  • Electron transport efficiency preserved

Bioenergetic Function Restoration

ATP Synthesis

ATP synthesis is measured in models of mitochondrial dysfunction, where the question is whether structural stabilisation translates into recovered output.

  • Membrane potential restored
  • ATP synthase coupling improved
  • Respiration raised in aged tissue models

Studied applications

What SS-31 is researched for

Cardiology Research

Heart Failure

Cardiac mitochondria are unusually dense, which is why heart failure models feature so heavily for a cardiolipin-binding compound.

Daubert MA et al. 2017

Ischemia Research

Reperfusion Injury

Reperfusion generates a burst of reactive oxygen species, making it a direct test of the proposed mechanism.

Zhao K et al. 2007

Aging Biology

Mitochondrial Aging

Cristae architecture and bioenergetic output are measured in aged tissue against younger controls.

Siegel MP et al. 2013

Nephrology Research

Renal Protection

Renal tubular cells are also mitochondria-rich, and the endpoints mirror the cardiac work.

Birk AV et al. 2013

What the published work measures

The endpoints reported across the literature for this compound. The figures belong to the individual papers, not to us.

  • Cardiac Output Improvement (Phase II HF Trial)
  • Mitochondrial ROS Reduction (I/R Models)
  • ATP Production Improvement (Aged Muscle)
  • Cardiolipin Peroxidation Reduction

Reference values

SS-31 molecular data

Scroll for full molecular data →

SequenceD-Arg-Dmt-Lys-Phe-NH2
Molecular weight638.80 g/mol
Molecular formulaC32H49N9O5
Physical formLyophilized powder (5mg)
Documented purityQuantified by HPLC, reported per lot
Storage-20°C for long-term stability
SolubilitySoluble in water
Available sizes10mg

FAQ

Common questions about SS-31

What is SS-31?

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SS-31, also called elamipretide, is a four-residue peptide that concentrates at the inner mitochondrial membrane. It does not bind a receptor; it associates with cardiolipin, a phospholipid specific to that membrane and central to its structural integrity. Research examines mitochondrial function and cristae architecture.

What is SS-31 researched for?

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Published research on SS-31 concentrates on Heart Failure, Reperfusion Injury, Mitochondrial Aging and Renal Protection. Each of those areas is summarised further up this page with the citation it comes from, and the full reference list — 4 indexed publications — sits at the bottom. Study designs and concentrations vary considerably between publications, so the primary sources are worth reading directly.

How does SS-31 work?

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The literature describes SS-31 acting across Inner Mitochondrial Membrane Stabilization, Mitochondrial Reactive Oxygen Species Reduction and Bioenergetic Function Restoration, reported respectively as Cardiolipin Binding, ROS Scavenging and ATP Synthesis. Those pathways are drawn from preclinical models rather than clinical work, and they describe what has been observed rather than a settled mechanism — the individual pathway cards above cite what each one is based on.

What are the molecular specifications for SS-31?

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SS-31 has a molecular formula of C32H49N9O5, an average mass of 638.8 g/mol and the sequence D-Arg-Dmt-Lys-Phe-NH2. It is indexed under CAS Elamipretide, MTP-131, Bendavia. It ships as lyophilized powder (5mg). Those are nominal reference values for the parent compound. The identity of the specific material you receive is confirmed by mass spectrometry and reported on that lot's certificate.

How should SS-31 be stored and reconstituted?

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Store the sealed vial at -20°C, protected from light and moisture, and let it reach room temperature before opening so condensation does not form on cold powder. SS-31 is soluble in water; reconstitute by directing the diluent down the vial wall rather than onto the powder, then swirl to dissolve rather than shaking. Keep reconstituted solution refrigerated and avoid repeated freeze-thaw cycles — solutions are far less stable than lyophilized powder.

Is SS-31 approved for human use?

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No. SS-31 is supplied strictly for in-vitro laboratory research and development. It is not a drug, food, supplement or cosmetic, it has not been evaluated by the FDA, and it is not intended for human or animal consumption, ingestion, injection or any in-vivo use. Ordering confirms you are a qualified researcher or institution purchasing on that basis.

Cited sources

Peer-reviewed literature

Independent published research indexed from PubMed — not Routine Peptides claims.

  1. [1]PubMedElamipretide (MTP-131) in chronic heart failure: PROGRESS-HF Phase II (opens in a new tab)2017 — Daubert MA et al.View source →
  2. [2]PubMedCell-permeable peptide antioxidants targeted to inner mitochondrial membrane (SS-31) (opens in a new tab)2007 — Zhao K et al.View source →
  3. [3]PubMedElamipretide improves mitochondrial function in the failing heart (opens in a new tab)2013 — Birk AV et al.View source →
  4. [4]PubMedMTP-131 improves skeletal muscle mitochondrial function in aged mice (opens in a new tab)2013 — Siegel MP et al.View source →

Available in the catalog

SS-31 from $72

View product & pricing

Before you order

Quality Becomes RoutineMeasured. Verified. Documented.

Every production run is analyzed by an independent laboratory, and the certificate for your lot travels with the order — not a catalog-wide document, and not a summary written by us.