MOTS-c — Mitochondrial Peptide Research

Last updated: May 2026

A MOTS-c research compound is a 16-amino-acid mitochondria-derived peptide (MDP) coded within the 12S ribosomal RNA gene of the mitochondrial genome. Its chain is MRWQEMGYIFYPRKLR. MOTS-c was discovered by Lee et al. and reported in Cell Breakdown in 2015, finding it as an natural signal compound. It controls cell energy balance. According to a foundational discovery study in Cell Metabolism (2015), MOTS-c triggered AMPK pathways. Improved insulin response in high-fat diet mouse models compared to vehicle controls. It also extended lifespan in C. elegans aging models.

Next Level Pharm supplies research-grade MOTS-c tested to at least 99 percent purity by HPLC. Mass spec on every batch. A Certificate of Test with a lot number ships with every order.

The sections below cover MOTS-c structure, finding, AMPK trigger, energy research findings, aging studies. Sourcing standards.

Key Takeaways

What it is: MOTS-c is a 16-amino-acid peptide coded in the mitochondria 12S rRNA open reading frame c. It is a natural signal peptide studied in energy and aging science.
Finding: Lee et al. reported MOTS-c in Cell Breakdown (2015) as a before unknown mitochondria-derived peptide with energy control action in cell. Animal models.
AMPK trigger: MOTS-c triggers AMPK pathways and translocates to the nucleus under energy stress. It controls gene action linked to glucose and fatty acid breakdown.
Energy research: Published studies report improved insulin response. Glucose breakdown markers in MOTS-c-treated animal models on high-fat diets.
Aging research: MOTS-c extends lifespan in C. elegans models and improves energy value in aged mouse models. Human plasma MOTS-c levels change with age in research data.
Sourcing standard: Research-grade MOTS-c needs HPLC purity above 99 percent, mass spec proof near 2174 daltons. A lot-exact COA.

Here is a closer look at MOTS-c structure, AMPK pathway, published findings. Sourcing standards for lab research.

What Is MOTS-c and How Was It Discovered?

The finding of MOTS-c challenged the assumption that ribosomal RNA genes do not encode working peptides. Ribosomal RNA (rRNA) genes are expressed at high levels and transcribed in large amounts. Their products were assumed to be structural RNA molecules rather than protein-coding chains. The finding of a small open reading frame (ORF) within the 12S rRNA gene suggested. At least some of this highly expressed chain could encode a peptide.

Lee et al. used lab scanning of mitochondria rRNA chains to find candidate ORFs. Then confirmed their translation by mass spec of mitochondria extracts. MOTS-c was found in the 12S rRNA ORF c region. The peptide was detectable in cell lines, mouse tissues, and human plasma samples. In living systems active MOTS-c added to cell culture media produced changes in AMPK triggers. Glucose uptake markers within 30 minutes. According to a sequence characterization study in Nature Communications (2016). The MRWQEMGYIFYPRKLR chain was confirmed in human tissues by mass spec. Shown to be broadly conserved across mammals.

What Structural Features Define MOTS-c?

MOTS-c is a linear 16-amino-acid peptide with the chain MRWQEMGYIFYPRKLR. Its compound weight is about 2174 daltons. The C-terminus is enriched in basic amino acids, with two arginine residues (R). One lysine (K) in the last four positions. This arginine-rich region is a nuclear location signal (NLS). It enables the peptide to enter the cell nucleus when mitochondria energy stress signals are present.

The peptide also contains a tryptophan (W) at position 3. Two phenylalanine (F) residues at positions 8 and 11, which contribute to hydrophobic character. In aqueous solution, MOTS-c adopts a partially folded structure rather than a fully random coil. Consistent with its interaction with cell binding partners. The arginine-rich C-terminus makes mass spec test produce multiply charged ions, which is a feature. It must be considered in quality control method growth for this exact peptide.

How Does MOTS-c Activate AMPK Pathways?

AMPK (AMP-triggered protein kinase) is a cell energy sensor. It is triggered when the AMP/ATP ratio rises, signalling low cell energy status. AMPK trigger promotes catabolic processes that generate ATP and inhibits anabolic processes that consume ATP. Key AMPK targets include ACC (acetyl-CoA carboxylase) for fatty acid breakdown, GLUT4 translocation for glucose uptake. PGC-1alpha for mitochondria growth.

MOTS-c triggers AMPK in part through nuclear translocation and gene control. Under energy stress, MOTS-c moves from the cytoplasm to the nucleus. Binds to protective agent response elements (ARE) in gene promoters. This transcriptional action increases output of energy stress response genes that feed back to AMPK triggers. According to a mechanistic study in Cell Metabolism (2016). MOTS-c nuclear translocation was confirmed by fluorescence microscopy in metabolically stressed cells. AMPK knockdown blocked MOTS-c’s effects on glucose uptake in the same model.

Browse fitness and GH peptides at Next Level Pharm for COA-tested MOTS-c. Linked mitochondria research compounds.

What Do Metabolic Research Studies Show for MOTS-c?

Published energy research used high-fat diet (HFD) mouse models as a primary system. It aimed to study S-c action. HFD models develop insulin resistance and impaired glucose tolerance over several weeks, producing measurable energy phenotypes. It can be quantified by glucose tolerance tests (GTT), insulin tolerance tests (ITT). Fasting glucose measurements.

According to a metabolic study in Cell Metabolism (2015), MOTS-c use in HFD mice improved GTT. ITT performance compared to vehicle-treated HFD controls. Treated animals showed lower fasting glucose and improved insulin response curves. The same study reported increased glucose uptake markers in skeletal muscle tissue from MOTS-c-treated animals. Consistent with AMPK-driven GLUT4 trigger. These findings support MOTS-c’s role in energy research as a tool. It aimed to study K-dependent glucose control pathways.

What Do Aging and Longevity Studies Show for MOTS-c?

MOTS-c has been studied in C. elegans (nematode) aging models. C. elegans is a standard model organism for lifespan research since its lifespan of about 20 days allows controlled studies on genetics. Research-grade interventions. The conserved insulin/IGF-1 signal pathway in C. elegans is homologous to mammalian insulin signal, making it relevant to energy aging research.

According to a longevity study in Aging Cell (2018), MOTS-c extended mean lifespan in C. elegans by about 14 percent compared to vehicle controls. The effect needed a working AMPK signal, as AMPK-deficient worms did not show lifespan extension. In aged mouse models, MOTS-c treatment improved muscle insulin response and reduced age-associated energy decline markers. Human plasma studies report. MOTS-c levels are higher in physically active young adults than in sedentary older adults. Though the research nature of these data limits process-level interpretation.

What Quality Standards Apply to Research-Grade MOTS-c?

Research-grade MOTS-c needs HPLC purity above 99 percent by reverse-phase HPLC. The arginine-rich C-terminus affects chromatographic behavior. Optimization of the mobile phase terms is needed to achieve complete separation of the 16-amino-acid peptide from its output byproducts. At 2174 daltons, MOTS-c is larger than most short peptides used in standard research. Makes HPLC method growth more demanding.

Mass spec proof must account for the multiply charged ion states produced by the arginine-rich chain. The expected compound weight for correctly made MOTS-c is about 2174.6 daltons. Any truncated or substituted chain would show a shifted compound weight. A lot-exact COA records HPLC purity, mass spec type result, lot number, and storage terms. Storage at -20 degrees Celsius is recommended to maintain peptide strength.

Peptide	Origin	Target/Pathway	Primary Research Focus
MOTS-c	Mitochondrial 12S rRNA ORF c	AMPK activation, nuclear signaling	Metabolic homeostasis, aging
SS-31	Synthetic tetrapeptide	Mitochondrial inner membrane, cardiolipin	Oxidative stress, mitochondrial function
Humanin	Mitochondrial 16S rRNA region	Insulin receptor, neuroprotective pathways	Neuroprotection, insulin signaling

Frequently Asked Questions

What is MOTS-c and how was it discovered?

MOTS-c is a 16-amino-acid peptide coded within the 12S ribosomal RNA (12S rRNA) gene of the mitochondrial genome. It was discovered by Lee et al. and reported in Cell Breakdown in 2015. The finding found MOTS-c as a mitochondria-derived peptide (MDP). It functions as a natural signal compound controlling cell breakdown.

What structural features define MOTS-c?

MOTS-c has the amino acid chain MRWQEMGYIFYPRKLR. It is a 16-amino-acid linear peptide with a compound weight of about 2174 daltons. It is coded in a small open reading frame within the 12S rRNA gene. It is unusual since ribosomal RNA genes do not often encode working peptides. The arginine-rich C-terminus contributes to nuclear translocation under energy stress.

How does MOTS-c activate AMPK pathways?

MOTS-c triggers AMP-triggered protein kinase (AMPK), a cell energy sensor that responds to low ATP states. In cell studies, MOTS-c has been shown to enter the nucleus under energy stress. Control gene transcription. AMPK triggered by MOTS-c promotes glucose uptake, fatty acid breakdown. Mitochondria growth in lab models of energy control.

What do metabolic research studies show for MOTS-c?

Published cell and animal studies report. MOTS-c improves insulin response markers and glucose breakdown in energy research models. According to research in Cell Breakdown (2015). MOTS-c use in high-fat diet mice improved insulin response compared to vehicle controls. The study measured fasting glucose, insulin tolerance, and glucose tolerance as energy markers.

What do aging and longevity studies show for MOTS-c?

MOTS-c has been studied in aging model organisms. Published research reports that MOTS-c extends lifespan in C. elegans and improves energy value in aged mouse models. MOTS-c levels in human blood have been reported to change with age in research studies. Suggesting it may function as a natural regulator of aging science.

How does MOTS-c compare to other mitochondrial-derived peptides?

Three mitochondria-derived peptides are studied in aging and breakdown research: MOTS-c, SS-31, and Humanin. MOTS-c is coded in the 12S rRNA ORF c and mainly triggers AMPK energy pathways. Humanin is coded in the 16S rRNA region and studied for brain-protect and insulin signal. SS-31 is a synthetic tetrapeptide that targets mitochondria inner membrane heart fat for cell damage research.

What quality standards apply to research-grade MOTS-c?

Research-grade MOTS-c needs HPLC purity above 99 percent. Mass spec proof of the 16-amino-acid compound weight near 2174 daltons. A lot-exact Certificate of Test records both results. The arginine-rich C-terminus increases the peptide’s charge state. It must be accounted for in mass spec method growth for accurate compound weight proof.

Is MOTS-c for human use?

The research-grade compound is for lab research only. It is not approved for human use, therapeutic, or diagnostic purposes. All published studies cited in this article used cell culture models or animal models. The compound should not be given to humans outside of a licensed trial-based trial setting with appropriate control approval.

Where does MOTS-c ship from?

Research-grade MOTS-c ships to all 50 states within the United States. A Certificate of Test with HPLC purity data, mass spec results. Lot number ships with every order for full sourcing records.

Summary

MOTS-c is a 16-amino-acid mitochondria-derived peptide coded in the 12S rRNA ORF c region of the mitochondrial genome. Published research links it to AMPK trigger, nuclear translocation under energy stress. Improved insulin response markers in high-fat diet mouse models. Aging studies in C. elegans show lifespan extension via AMPK-dependent pathway. Research-grade sourcing needs HPLC purity above 99 percent, mass spec proof of the 2174-dalton chain. A lot-exact COA.

What Should You Do Next?

Browse research-grade MOTS-c at Next Level Pharm for COA-tested options with full HPLC. Mass spec data on every batch.

About the Author

Next Level Pharm Research Team

Alex M covers peer-reviewed findings in peptide science for Next Level Pharm, a US-based supplier of research-grade peptides verified to >=99% purity via HPLC and mass spectrometry on every batch.

Disclaimer: The information provided on this page is for educational and research purposes only. Next Level Pharm’s products are intended for laboratory research use only. They are not intended for human consumption, diagnostic, therapeutic, or medicinal purposes. This content does not constitute medical advice. Always consult a licensed healthcare professional before making any health-related decisions.

MOTS-c Research: Mitochondrial Peptide and Metabolic Studies