MOTS-c

MOTS-c (CAS 1627580-64-6; MW 1817.1 g/mol; sequence MRWQEMGYIFYPRKLR) is a 16-amino acid peptide encoded not by nuclear DNA, but by the mitochondrial genome itself — within the 12S ribosomal RNA gene. Its discovery challenged the established view that mitochondria are passive ATP-producing organelles. MOTS-c is the first mitochondrial-derived peptide (MDP) demonstrated to translocate from mitochondria to the cell nucleus and directly regulate nuclear gene expression, placing it at the intersection of mitochondrial biology and nuclear gene regulation.

At the mechanistic level, MOTS-c activates AMPK (AMP-activated protein kinase) — the master cellular energy sensor — and inhibits the folate-methionine one-carbon metabolism pathway. This inhibition reduces energetically taxing de novo purine synthesis during metabolic stress, while AMPK activation redirects cellular resources toward fuel oxidation. Net effects in research models include: decreased oxygen consumption and reactive oxygen species (ROS); maintained mitochondrial membrane potential; improved insulin sensitivity and glucose metabolism; and reduced intracellular metabolites linked to insulin resistance.

Exercise-mimetic properties have been characterized in research subject models — MOTS-c administration in sedentary animals produced metabolic gene expression patterns similar to exercise-trained animals, including upregulation of fatty acid oxidation pathways and mitochondrial biogenesis markers.

Protective effects against obesity, type 2 diabetes, osteoporosis, age-related sarcopenia, and all-cause mortality in multiple animal aging models have been documented, positioning MOTS-c as one of the most compelling longevity-focused research peptides currently available.

The following compounds operate through distinct, non-overlapping mechanisms that complement this product's research pathways. Each is independently available from the General Peptide catalog.