MOTS-c Peptide Explained: Mitochondrial Research Guide

MOTS-c is one of the few peptides encoded directly in mitochondrial DNA. It has emerged as a leading candidate in metabolic and longevity research.

May 13, 20267 min read

What is MOTS-c?

MOTS-c (Mitochondrial Open reading frame of the 12S rRNA-c) is a 16-amino-acid peptide encoded within the small mitochondrial 12S rRNA gene. Discovered in 2015, it belongs to a small family of mitochondrial-derived peptides (MDPs) that includes humanin and the SHLPs.

Mechanism: AMPK activation

In published research, MOTS-c translocates to the nucleus under metabolic stress and activates AMP-activated protein kinase (AMPK), the cell's master energy sensor. AMPK activation downstream improves glucose uptake, fatty acid oxidation, and mitochondrial biogenesis.

This mechanism has positioned MOTS-c as an "exercise mimetic" candidate in animal studies, where administration produced increases in physical capacity and metabolic flexibility independent of training.

Areas of active research

Insulin sensitivity and glucose homeostasis
Age-related metabolic decline and sarcopenia
Obesity-induced insulin resistance
Mitochondrial dysfunction in skeletal muscle
Cardiovascular and bone-density endpoints

Reconstitution & storage

Reconstitute lyophilized MOTS-c with bacteriostatic water.
Common ratio: 10 mg vial + 2 mL BAC water → 5 mg/mL.
Refrigerate reconstituted solution at 2–8 °C; use within 30 days.
Long-term storage of lyophilized powder at –20 °C.

Dosing in published animal studies

Animal studies have used MOTS-c at 0.5–15 mg/kg administered intraperitoneally, daily or every other day. These figures describe the published research literature only and are not dosing guidance for any other use.

Frequently asked questions

What makes MOTS-c unusual?

MOTS-c is one of the rare peptides encoded in mitochondrial DNA rather than nuclear DNA. This unusual origin places it at the center of research on mitochondrial signaling and longevity.

Is MOTS-c considered an exercise mimetic?

In animal studies, MOTS-c administration improved metabolic capacity and physical performance independently of training, leading several research groups to describe it as an exercise mimetic candidate.