What Is MOTS-c? Mitochondrial Research Peptide Guide
Key Takeaways
- →MOTS-c is a mitochondrial-derived peptide encoded in the mitochondrial genome — not the nuclear genome like most peptides.
- →It acts as a retrograde signaling molecule, communicating mitochondrial status to cellular metabolic pathways.
- →Studied for its role in metabolic regulation, insulin sensitivity, and mitochondrial function in research models.
- →Available for in-vitro research at ≥99% HPLC-verified purity from Peptide.Express.
Table of Contents
What Is MOTS-c?
Here's something that sets MOTS-c apart from almost every other research peptide you'll come across: it's not encoded in the nuclear genome. MOTS-c — short for Mitochondrial Open Reading Frame of the Twelve S rRNA Type-c — is encoded in the mitochondrial genome. That's a rare distinction in the peptide research world.
Discovered relatively recently, MOTS-c is a 16-amino-acid peptide that researchers believe plays a role in mitochondrial retrograde signaling. Think of it as a messenger from the mitochondria to the rest of the cell — it communicates information about mitochondrial status and helps regulate cellular metabolic responses.
What makes this particularly interesting is that mitochondria have their own DNA — separate from the DNA in the cell nucleus. And MOTS-c is one of the few peptides known to be encoded by that mitochondrial DNA. This means it operates in a fundamentally different biological context than nuclear-encoded peptides.
Researchers interested in studying MOTS-c can find it at Peptide.Express catalog, where it's available at ≥99% HPLC-verified purity with a Certificate of Analysis.
Mechanism of Action
Let's talk about how MOTS-c works at the cellular level. The mechanism is still being characterized, but here's what researchers have found so far:
Mitochondrial Retrograde Signaling
MOTS-c is believed to act as a mitochondrial retrograde signaling peptide. When mitochondrial function changes — due to metabolic stress, exercise, or other factors — MOTS-c helps communicate that information to the nucleus, triggering adaptive responses in cellular metabolism.
AMPK Pathway Modulation
Research suggests MOTS-c can activate the AMP-activated protein kinase (AMPK) pathway, a master regulator of cellular energy homeostasis. This places MOTS-c at the intersection of mitochondrial function and broader metabolic regulation — a key area of interest for researchers.
Insulin Sensitivity Signaling
Studies have indicated that MOTS-c may play a role in insulin sensitivity regulation. It appears to influence glucose uptake and metabolic flexibility in cellular models, making it a compound of interest in metabolic signaling research.
Here's the thing — because MOTS-c is a mitochondrial-derived peptide, its mechanism is fundamentally different from most research peptides. It's not just another receptor agonist or antagonist. It represents a whole different class of signaling molecule, one that originates from the power plants of the cell.
Research Applications
MOTS-c is being studied across several research areas. Here's a look at the most active areas of investigation:
Mitochondrial Function Studies
Researchers are investigating how MOTS-c influences mitochondrial biogenesis, dynamics, and function. Understanding the role of mitochondrial-derived peptides in cellular energy regulation is a growing field.
Metabolic Research
MOTS-c is studied for its effects on glucose metabolism, insulin sensitivity, and lipid homeostasis in in-vitro models. These studies help clarify the peptide's role in metabolic signaling networks.
Exercise Physiology
Some research has explored MOTS-c in the context of exercise adaptation and muscle metabolism. The peptide appears to be regulated by exercise, suggesting a potential role in the mitochondrial response to physical activity.
Aging Research
Mitochondrial dysfunction is a hallmark of aging, and mitochondrial-derived peptides like MOTS-c are being studied for their potential role in age-related metabolic changes. This is an emerging area of investigation.
As with all research compounds discussed here, these studies are conducted in in-vitro and preclinical laboratory settings only. MOTS-c is not approved for human or therapeutic use.
Technical Specifications
| Compound | MOTS-c (Mitochondrial Open Reading Frame of the Twelve S rRNA Type-c) |
| Amino Acids | 16 |
| Sequence | MRWQEMGYIFYPRKLR |
| Molecular Weight | ~2,174 Da |
| Purity | ≥99% (HPLC verified) |
| Testing | HPLC + LC-MS/MS by independent third-party laboratory |
| Certificate of Analysis | Included with every order |
| Intended Use | In-vitro laboratory research only. Not for human consumption. |
Buy MOTS-c for Research
Looking for MOTS-c for your research? Here's what you need to know. Peptide.Express supplies MOTS-c at ≥99% purity, verified by HPLC and LC-MS/MS through independent third-party laboratories. Every order comes with a Certificate of Analysis documenting batch-specific results.
Our MOTS-c is synthesized using solid-phase peptide synthesis and undergoes rigorous quality control. Each batch is tested for purity, identity, and concentration. The CoA includes the batch number, test date, and analytical methodology.
Orders placed before 2 PM EST ship the same day, cold-packed. Free shipping on US orders over $150.
View MOTS-c Product PageRelated Research Guides
Frequently Asked Questions
What is MOTS-c?
MOTS-c (Mitochondrial Open Reading Frame of the Twelve S rRNA Type-c) is a mitochondrial-derived peptide encoded in the mitochondrial genome. It is studied for its role in metabolic regulation, insulin sensitivity, and mitochondrial function. For in-vitro research use only. Not for human consumption.
How does MOTS-c differ from other research peptides?
Unlike most research peptides that are encoded in the nuclear genome, MOTS-c is encoded in the mitochondrial genome. This makes it unique — it originates from the mitochondria themselves and is believed to act as a retrograde signaling molecule, communicating mitochondrial status to the rest of the cell.
Where can I buy MOTS-c for research?
MOTS-c is available from Peptide.Express at ≥99% HPLC-verified purity with Certificate of Analysis included. Same-day US shipping on orders before 2PM EST. For in-vitro research use only. Not for human consumption.
What purity is MOTS-c from Peptide.Express?
All MOTS-c supplied by Peptide.Express is verified at 99%+ purity via HPLC and LC-MS/MS third-party analysis. A Certificate of Analysis with batch-specific results is included with every order.
What is the molecular weight of MOTS-c?
MOTS-c is a 16-amino-acid peptide with a molecular weight of approximately 2,174 Da. Its sequence is MRWQEMGYIFYPRKLR. For in-vitro research use only.