What Is MOTS-c?

MOTS-c is a short peptide notable for where its sequence comes from: the mitochondrial genome rather than the nuclear DNA that encodes most proteins. It belongs to a comparatively recently described group, the mitochondrial-derived peptides, and is studied in metabolic and mitochondrial research. This profile describes the molecule and its study, and makes no statement about use.

MOTS-c was described as a peptide encoded within the mitochondrial 12S ribosomal RNA region, one of a small set of short sequences found to originate in mitochondrial DNA. That origin is what places it in the mitochondrial-derived peptide class. The research material is made synthetically so a defined sequence can be prepared and characterised, by the routes outlined in how peptides are manufactured.

MOTS-c belongs to a small but growing group of mitochondrial-derived peptides, which also includes humanin and others, all encoded within the compact mitochondrial genome rather than the nucleus. Their description changed part of how researchers think about where peptide signals can originate, since the mitochondrion had not traditionally been viewed as a source of such peptides. MOTS-c, encoded within the 12S ribosomal RNA region, is among the most studied of the group, which makes it a common entry point into the mitochondrial-derived peptide concept.

MOTS-c is a sixteen-residue peptide, longer than a short signalling fragment but still compact. Its length gives it more sequence to characterise and to keep intact than a very short peptide. The material is handled as a lyophilised powder, as listed on the MOTS-c product page; for reading its sequence in a specification, see peptide sequence notation.

MOTS-c draws interest first as an example of the mitochondrial-derived peptide concept, which expanded the idea of where peptide signals can originate, and second as a subject of metabolic research. A molecule encoded in the mitochondrial genome offers a way to study how such sequences relate to cellular metabolism in laboratory systems. The factual framing this category requires is in our note on understanding research compounds.

Published study places MOTS-c in metabolic and mitochondrial research, characterising the peptide and examining how it behaves in cell and model systems. These describe the molecule in research settings only. Other compounds studied in metabolic contexts appear in the research catalogue.

Part of what makes MOTS-c a useful research subject is precisely its origin, which lets investigators study a peptide whose sequence is read from the mitochondrial genome rather than the nucleus. Work of this kind characterises the molecule and situates it among the other mitochondrial-derived peptides, contributing to an account of the group that is still being assembled.

As a member of a newer peptide class, MOTS-c sits in an area of research that is still taking shape, so its literature is best read closely and at the level of individual studies. The MOTS-c research overview takes up the investigated areas and the limits of the evidence.

All products are supplied strictly for laboratory research use only. Not for human or animal consumption. Not a drug, supplement, or food. Not for diagnostic or therapeutic use. The material on this page is educational and factual: it summarises areas of published scientific investigation and general laboratory practice. It is not guidance for the use of any material in humans or animals, and nothing here should be read as a claim about safety, performance, or outcomes. Where a specific product specification or safety data sheet is provided with a material, that document is the definitive reference and takes precedence over any general information given here.