What is MOTS-c? A Mitochondrial Peptide Breakdown
Compound Spotlight
MOTS-c is one of a small class of peptides encoded not by nuclear DNA, but by mitochondrial DNA. That unusual origin is what first drew research attention, and it is now one of the more closely watched compounds in longevity and metabolic research.
Quick summary
- MOTS-c is a 16-amino-acid peptide encoded by mitochondrial, not nuclear, DNA.
- Studied mainly for metabolic regulation, insulin sensitivity, and exercise-adaptation research.
- Its main studied mechanism is activation of AMPK, a central regulator of cellular energy balance.
- Often discussed alongside SS-31 as part of the mitochondrial peptide research wave.
What is MOTS-c?
MOTS-c (Mitochondrial Open Reading Frame of the 12S rRNA-c) is a 16-amino-acid peptide derived from a region of the mitochondrial genome once assumed to be non-coding. Its discovery was notable because most cellular signaling peptides originate from nuclear DNA, not the small circular genome housed inside mitochondria.
What it is studied for
- Metabolic regulation and insulin sensitivity research
- Mitochondrial function and cellular energy signaling
- Exercise-adaptation and metabolic stress response models
- Longevity and aging-related research
How it is thought to work
Research on MOTS-c has focused on its role as a mitochondrial-to-nuclear signaling molecule, communicating the metabolic state of the mitochondria to the rest of the cell. Studies have looked at its activation of AMPK, a central regulator of cellular energy balance, which is part of why researchers studying metabolic health and exercise physiology have taken interest.
Research history
MOTS-c was first identified in 2015 by researchers studying the mitochondrial genome for previously undiscovered coding regions. What made the finding notable is that the region producing MOTS-c had long been classified as non-coding ribosomal RNA, not a template for a functional peptide. Its discovery added to a small but growing list of mitochondrial-derived peptides, which also includes humanin, identified roughly a decade earlier.
Early research focused on establishing that MOTS-c actually circulates in the body and responds to physiological stress, particularly exercise. Subsequent studies moved into examining its downstream effects on glucose uptake and insulin signaling in skeletal muscle, which is the research thread most current studies build on.
Where the research stands
MOTS-c research is still relatively young compared to more established compounds, with most published work in preclinical and animal models. It is frequently discussed alongside SS-31 as part of a broader wave of mitochondrial peptide research, though the two compounds are studied through different mechanisms.
Our MOTS-c
Every lot we sell is sent to an independent, third-party lab before it is listed, and the resulting Certificate of Analysis is published for that exact lot, confirming identity and purity.
For laboratory and research use only. Not for human consumption. This article is for informational purposes and summarizes existing published research; it is not medical advice.
Frequently asked questions
Why is MOTS-c different from most peptides?
Most peptides are encoded by nuclear DNA. MOTS-c is one of a small number derived from mitochondrial DNA, which is part of why it is studied specifically for mitochondrial and metabolic signaling.
How do I know what is actually in the vial?
Every lot we sell has a published Certificate of Analysis from an independent, third-party lab, confirming both identity and purity. You can look up any lot number directly on our site.
