What Is MOTS-c? Mitochondrial Peptide Research Guide
MOTS-c is a 16-amino-acid peptide encoded not in nuclear DNA but in the mitochondrial genome. That unusual origin is what makes it interesting: it belongs to a small class of mitochondrial-derived peptides that appear to act as signalling molecules between the mitochondria and the rest of the cell.
Mitochondrial origin
MOTS-c is encoded within the mitochondrial 12S rRNA region. Along with humanin and the SHLP family, it forms the group known as mitochondrial-derived peptides.
This origin underpins the research framing: these peptides are studied as retrograde signals reporting mitochondrial state to the nucleus.
Research directions
The central published line of work concerns AMPK activation and the folate-methionine cycle, with downstream effects on glucose utilisation in cell and animal models.
Related studies examine exercise-response markers, insulin sensitivity in rodent models, and age-associated decline in circulating MOTS-c levels.
Handling
Standard handling: reconstitute with bacteriostatic water, mix by gentle swirling, refrigerate the reconstituted vial and protect it from light.
Frequently asked questions
- What makes MOTS-c different from other peptides?
- It is encoded in mitochondrial DNA rather than nuclear DNA, placing it in the small class of mitochondrial-derived peptides studied as retrograde signalling molecules.
- What pathway is MOTS-c studied for?
- Primarily AMPK activation and the folate-methionine cycle, with downstream metabolic effects examined in cell and animal models.
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