MOTS-c

Mechanism

MOTS-c is a 16-amino-acid peptide encoded in the mitochondrial genome — specifically in the 12S ribosomal RNA gene. This makes it structurally unusual: most peptides we cover are encoded in nuclear DNA. MOTS-c was discovered in 2015 and has been characterized as a regulator of cellular metabolism and stress response.

The published mechanism centers on AMPK signaling activation. AMPK is the cellular energy sensor that gets activated by exercise, fasting, and metabolic stress. MOTS-c administration produces a similar signaling pattern — which is why the compound is sometimes called an "exercise mimetic" in research literature, although the comparison should be read carefully.

Other reported mechanisms include glucose-uptake regulation in muscle tissue and modulation of the folate–methionine cycle. The full pathway map is still being characterized.

Research dosing

Published preclinical and limited human research uses doses in the 5–15 mg subcutaneous range. Common research-protocol patterns:

• 5–10 mg daily for 2–4 weeks
• 10–15 mg every other day for longer cycles
• Cycling is universal — the compound is not used as a continuous protocol in published literature

Half-life data is limited but downstream effects (AMPK activation, glucose-uptake changes) persist for many hours after administration.

Side-effect profile

The published side-effect profile in research-protocol literature is mild compared to growth-hormone-axis compounds. Most-reported observations:

• Mild fatigue in the first few days of a new cycle
• Injection-site reactions at higher doses
• No reported metabolic disruption in published short-cycle protocols

What we cover

MOTS-c is a structurally compact peptide (16 amino acids) that's relatively straightforward to synthesize cleanly, so HPLC purity figures from disciplined vendors tend to cluster tightly. Our vendor audits weight identity confirmation more heavily than purity for this compound — the smaller molecule means fewer truncation impurities, but identity-confirmation matters because the sequence is unusual.