Mitochondrial Metabolism Studies
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MOTS-c is a peptide produced by our own mitochondria, researched as an 'exercise mimetic' for boosting metabolism, energy, insulin sensitivity, and endurance.
Mitochondrial-derived 16-amino acid peptide
The pathways MOTS-c acts on — and what each one does. The animation traces its signal outward from the compound to every target it engages.
MOTS-c activates AMP-activated protein kinase (AMPK) in skeletal muscle, adipose tissue, and liver. AMPK is a master metabolic sensor that responds to cellular energy status. MOTS-c–induced AMPK activation in preclinical models was associated with increased glucose uptake, fatty acid oxidation, and mitochondrial biogenesis signaling.
MOTS-c is encoded within the 12S rRNA gene of the mitochondrial genome — a discovery that established mitochondria as an endocrine organ capable of producing bioactive peptides. Under metabolic stress, MOTS-c translocates from mitochondria to the nucleus where it acts as a transcriptional regulator, modulating antioxidant response element (ARE) gene expression.
MOTS-c levels naturally rise in response to exercise, and exogenous MOTS-c administration in mouse models replicated several exercise-associated metabolic adaptations including improved insulin sensitivity, reduced adiposity, and increased physical endurance — even in sedentary animals. It inhibits the folate cycle and purine synthesis under stress, redirecting metabolic flux.
The main areas MOTS-c is being studied for — and the study-reported figures behind them.
MOTS-c administration in high-fat diet mouse models improved insulin sensitivity, reduced fat accumulation, and normalized glucose tolerance — effects mediated primarily through skeletal muscle AMPK activation.
Lee C et al. 2015Circulating MOTS-c levels decline with age in both humans and rodents. Exogenous MOTS-c restored age-related declines in physical performance and metabolic flexibility in aged mouse models, suggesting its role in mitochondrial-nuclear communication during aging.
Reynolds JC et al. 2021Circulating MOTS-c increases significantly with aerobic exercise in humans. In sedentary mouse models, exogenous MOTS-c replicated exercise-related improvements in energy metabolism, mitochondrial biogenesis markers, and physical endurance.
Kim SJ et al. 2022Population studies identified MOTS-c variants (particularly R150Q) enriched in elderly Japanese populations. Genetic variation in MOTS-c sequence correlates with metabolic disease risk, linking mitochondrial peptide biology to human longevity phenotypes.
Zempo H et al. 2016An interactive 3D model rendered from the compound record — rotate and explore its structure.
C101H152N28O25S2
Every batch of MOTS-c is sent to an accredited independent laboratory before it ships. Here is what we screen for.
| Full Name | Mitochondrial Open Reading Frame of the 12S rRNA-c |
| Sequence | MRWQEMGYIFYPRKLR |
| Amino Acids | 16 residues |
| Molecular Weight | 2174.6 Da |
| Gene Origin | Mitochondrial 12S rRNA (mt-RNR1) |
| Primary Target | AMPK activation; folate cycle; nuclear ARE pathways |
| Form | Lyophilized powder (5mg) |
| Purity | ≥99% (HPLC verified) |
| Testing | Third-party HPLC, Mass Spec, Endotoxin |
| Storage (Lyophilized) | -20°C for long-term stability |
| Storage (Reconstituted) | 2–8°C, use within 30 days |
| Solubility | Bacteriostatic water or sterile saline |
| COA | Included with every order |
MOTS-c (Mitochondrial Open Reading Frame of the 12S rRNA-c) is a 16-amino acid peptide encoded within the mitochondrial genome — specifically in the 12S ribosomal RNA gene. Discovered in 2015 by researchers at USC led by Dr. Changhan David Lee, it was one of the first identified mitochondrial-derived peptides (MDPs). Unlike most mitochondrial proteins, MOTS-c is translated from a small open reading frame within non-coding RNA, establishing a new category of regulatory peptides originating from the organelle long considered only a metabolic powerhouse.
Circulating MOTS-c levels in humans and rodents increase significantly in response to aerobic exercise. MOTS-c activates AMPK — the same master energy sensor activated by exercise — in skeletal muscle and other metabolic tissues. In preclinical studies, exogenous MOTS-c administration in sedentary mice produced metabolic adaptations similar to exercise training: improved insulin sensitivity, enhanced fatty acid oxidation, increased mitochondrial biogenesis markers, and improved physical endurance. This exercise-mimetic profile has made MOTS-c a subject of significant research interest for metabolic biology.
MOTS-c levels decline with age in both humans and rodents, inversely correlating with age-related metabolic dysfunction. Population genetic studies identified a MOTS-c variant (R150Q, also called K14Q in some notation systems) enriched in elderly Japanese men — suggesting that specific MOTS-c sequences may influence longevity phenotypes. In aged mouse models, exogenous MOTS-c administration partially restored physical performance and metabolic flexibility, positioning it as a candidate for aging biology research.
MOTS-c activates AMPK through an indirect mechanism involving the folate cycle. Under metabolic stress, MOTS-c inhibits the enzyme MTHFR (methylenetetrahydrofolate reductase) in the folate-methionine cycle. This disrupts purine nucleotide biosynthesis, causing accumulation of ZMP (5-aminoimidazole-4-carboxamide ribonucleoside monophosphate) — a known AMPK activator. This AICAR-independent pathway for AMPK activation is one of the key mechanistic findings distinguishing MOTS-c from other metabolic peptides.
Human research on MOTS-c primarily consists of observational and correlational studies measuring circulating MOTS-c levels in various populations. These have shown associations between MOTS-c levels and: exercise status, aging, insulin resistance, and cardiovascular disease. Human genetic studies have identified longevity-associated MOTS-c variants. However, no randomized controlled trials of exogenous MOTS-c administration in humans have been completed or published as of 2024.
Store lyophilized MOTS-c at -20°C, protected from light and humidity. Upon reconstitution with bacteriostatic water or sterile saline, aliquot to minimize freeze-thaw cycles and store at 2–8°C, using within 30 days. MOTS-c is water-soluble, making it suitable for aqueous research systems. For cell culture experiments, filter-sterilize solutions before use. Always consult published protocols for concentration-specific guidance.
Independent published research indexed from PubMed and peer-reviewed journals — not Eon Peptides claims.
Not for human or veterinary use. For in-vitro laboratory research only. These statements have not been evaluated by the FDA; this product is not intended to diagnose, treat, cure, or prevent any disease. Sold exclusively to qualified researchers and institutions.
