what is mots-c.
MOTS-c (also written MOTSC or MOTS c) is a 16-amino-acid peptide encoded by a small open reading frame within the mitochondrial 12S ribosomal RNA region. The name reflects its origin: a mitochondrial open reading frame within the 12S rRNA region, with the -c denoting the specific peptide fragment characterized in the founding 2015 paper. Unlike all conventional signalling peptides, which are encoded in the nuclear genome, MOTS-c is encoded in mitochondrial DNA. This unusual genomic origin makes MOTS-c a member of the mitochondrial-derived peptide (MDP) class.
MOTS-c is not a ballpoint pen, writing implement, or office supply. It is a research peptide compound. The term MOTS-c peptide pen refers to a pre-filled peptide delivery device used in laboratory research settings, not a writing instrument.
MOTS-c was first characterised in 2015 by Lee and colleagues at the USC Leonard Davis School of Gerontology (Lee C, Zeng J, Drew BG, et al. Cell Metab. 2015;21(3):443-454). The discovery came from a systematic search of the mitochondrial genome for hidden open reading frames. Compared with the GHK-Cu or BPC-157 literature, the MOTS-c research base is newer; the bulk of the published work spans 2015 to the present.
MOTS-c has no regulatory approval as a pharmaceutical in any jurisdiction. The published evidence base is predominantly mouse models and in vitro mechanistic studies. It is supplied as a research peptide for laboratory use only.
How MOTS-c differs from other peptides
The defining feature of MOTS-c is its mitochondrial origin. Nuclear-encoded peptide hormones (insulin, GLP-1, GHRH, and so on) are translated from cytoplasmic mRNA from nuclear gene transcripts. Mitochondrial-derived peptides like MOTS-c are translated from sequences within mitochondrial DNA. The implications for evolutionary biology, organelle communication, and regulatory pathway architecture are an active research area.
Why MOTS-c is written as MOTSC, MOTS c, or MDP
Four variant names appear across the literature and commercial sources. Each refers to the same compound.
The hyphenated form used by Lee and colleagues in the 2015 Cell Metabolism discovery paper and across the peer-reviewed literature that followed. The form used on Certificates of Analysis from established analytical labs.
The unspaced and space-separated forms common in commercial listings and URL slugs. Search engines occasionally treat these as distinct queries. Mechanically the same compound.
MOTS-c is named after its origin: a mitochondrial open reading frame within the 12S rRNA region of mitochondrial DNA. The -c denotes the specific peptide fragment characterized in the founding 2015 paper.
The functional class to which MOTS-c belongs. Other MDPs include humanin and the SHLPs. MOTS-c is the most extensively characterised MDP and the only one with a pen format in commercial research peptide supply.
mechanism of action.
The biological activity of MOTS-c in preclinical research is built around four mechanistic threads characterised primarily in mouse models and in vitro studies. The mechanistic literature spans roughly a decade and is anchored by three landmark papers.
MOTS-c regulates cellular metabolism in an AMPK-dependent manner. AMPK (AMP-activated protein kinase) is the master metabolic switch that responds to cellular energy state. The AMPK-dependent mechanism underpins the metabolic homeostasis effects reported in the Lee 2015 discovery paper.
Kim and colleagues (Cell Metab, 2018;28(3):516-524) reported that MOTS-c translocates to the nucleus in response to metabolic stress and regulates nuclear gene expression. The nuclear translocation provides a mechanism by which a mitochondrial-encoded peptide influences nuclear-genome gene expression.
Lee and colleagues (Cell Metab, 2015;21(3):443-454) reported that MOTS-c administration in mice promoted metabolic homeostasis and reduced obesity and insulin resistance in diet-induced obese models. The published findings provide the basis for insulin sensitivity research applications.
Reynolds and colleagues (Nat Commun, 2021;12:470) reported that exercise induces endogenous MOTS-c expression in human skeletal muscle and that intermittent MOTS-c treatment increased physical capacity in mouse models across multiple age groups. The work supports the "exercise mimetic" framing common in MOTS-c commentary.
Discovery and initial metabolic characterisation
Lee and colleagues (Cell Metab, 2015;21(3):443-454) characterised MOTS-c effects on metabolic homeostasis in mouse models of diet-induced obesity. The published findings reported reduced obesity and improved insulin resistance in MOTS-c-treated subjects, and identified AMPK as the principal downstream effector. The work was the founding publication for the MOTS-c research field.
Nuclear translocation and gene expression
Kim and colleagues (Cell Metab, 2018;28(3):516-524) reported that MOTS-c translocates to the nucleus in response to metabolic stress and regulates nuclear gene expression. The finding addressed a key question about how a peptide encoded in the mitochondrial genome could influence nuclear-genome gene expression.
Exercise induction and physical capacity
Reynolds and colleagues (Nat Commun, 2021;12:470) reported that exercise induces endogenous MOTS-c expression in human skeletal muscle and in circulation, and that intermittent MOTS-c treatment in mice increased physical capacity across young, middle-aged, and old age cohorts. The work supports the framing of MOTS-c as an exercise-mimetic research compound.
All effects described in this section have been observed in preclinical research models or in mechanistic studies. None constitute therapeutic claims or clinical findings.
References
The three primary peer-reviewed sources referenced in this guide. Researchers should consult the originals for full methods, endpoints, and context.
- Lee C, Zeng J, Drew BG, et al. The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. Cell Metab. 2015;21(3):443-454. PMID: 25738959. doi:10.1016/j.cmet.2015.02.009.
- Kim KH, Son JM, Benayoun BA, Lee C. The mitochondrial-encoded peptide MOTS-c translocates to the nucleus to regulate nuclear gene expression in response to metabolic stress. Cell Metab. 2018;28(3):516-524.e7. doi:10.1016/j.cmet.2018.06.008.
- Reynolds JC, Lai RW, Woodhead JST, et al. MOTS-c is an exercise-induced mitochondrial-encoded regulator of age-dependent physical decline and muscle homeostasis. Nat Commun. 2021;12:470. doi:10.1038/s41467-020-20790-0.
research applications.
MOTS-c appears across four principal research application areas in the published literature. The compound's mitochondrial origin and AMPK-dependent mechanism distinguish it from nuclear-encoded peptides and support a distinct set of research designs.
Metabolic homeostasis and insulin sensitivity research
The principal application area established by the Lee 2015 founding paper. Investigators study MOTS-c effects on glucose handling, insulin signalling, and adipose-tissue metabolism in mouse models of diet-induced obesity and in human cell culture studies.
Exercise mimetic and physical performance research
The Reynolds 2021 work anchors this application area. Investigators study MOTS-c as a tool for probing exercise-induced metabolic adaptations, age-dependent physical decline, and muscle homeostasis. Circulating MOTS-c has been reported to be higher in physically active versus sedentary individuals in human cohorts.
Mitochondrial communication and nuclear-mitochondrial crosstalk research
The Kim 2018 nuclear translocation paper anchors this application area. Investigators use MOTS-c as a research tool for studying how mitochondrial-encoded signals influence nuclear gene expression, a question central to organelle communication and the broader bioenergetics field.
Aging and healthspan research
Circulating MOTS-c has been reported to decline with age across multiple tissues, correlating with metabolic deterioration. Late-life-initiated intermittent MOTS-c treatment in mice has been reported to increase physical capacity and measures of healthspan. Investigators study MOTS-c as a tool in aging biology research.
the peptide pen format.
A research peptide pen is a pre-filled delivery device pre-loaded with reconstituted peptide at a fixed concentration. The format originated in clinical injection devices and has been adapted for research handler use where dose consistency across experiments matters more than per-experiment flexibility.
The pen format differs from the lyophilised vial format in three practical ways. Pens arrive ready to use with no reconstitution step. The seal limits airborne contamination during repeated draws. The graduated dose mechanism provides volume consistency that is difficult to match with a manual draw from a stoppered vial.
The trade-off is rigidity. A pen format locks in the concentration set at manufacture, so researchers who need to vary working dilutions across a study still need to dilute the drawn aliquot into their experimental buffer. For a single-concentration study or a series of replicates at the same dose, the format reduces handler variance considerably.
The BodyPharm UAE MOTS-c peptide pen is supplied at a fixed concentration with batch-specific HPLC purity and mass spectrometry confirmation on the CoA.
quality and coa standards.
Research-grade MOTS-c is defined by the documentation that accompanies it. A peptide with a published synthesis route but no batch-specific Certificate of Analysis is not a research material; it is an unknown. Researchers procuring MOTS-c in the UAE or anywhere else should expect the following at minimum.
- HPLC purity greater than 98 percent, ideally above 99 percent for sensitive research applications.
- Mass spectrometry confirmation of the 16-amino-acid MOTS-c sequence.
- Batch-specific Certificate of Analysis from an independent third-party lab, not just an in-house result.
- Endotoxin testing where the material is intended for cell culture or animal research.
- Documented cold-chain handling from synthesis through shipping, with temperature logs available on request.
For BodyPharm UAE MOTS-c, the per-batch lab report is published at /uae/lab-results/mots-c-pen. The CoA documents HPLC purity, mass spectrometry confirmation of the 16-amino-acid sequence, and the in-house concentration assay. Independent third-party reports are available on request.
If there is no CoA, there is no peptide. Only powder.
uae sourcing and regulatory context.
Research peptides are not pharmaceuticals under UAE Federal Decree-Law No. 38 of 2024 and are not regulated as medicines. MOTS-c in the research peptide format is supplied for laboratory research use only, not for human or veterinary therapeutic use. Researchers are responsible for ensuring their handling and use comply with their institution's research governance and any applicable local research-ethics requirements.
The UAE has emerged as a regional hub for research peptide supply, partly because of the climate-driven cold-chain expertise developed across the GCC pharmaceutical distribution network. Suppliers operating from Dubai, Abu Dhabi, and Sharjah can typically meet same-day delivery to Dubai locations and one to three day delivery to other emirates.
Cold-chain shipping in the GCC requires considered packaging. Ambient temperatures across the summer months routinely exceed 40 degrees Celsius, well above the stability window for reconstituted peptide solutions. See the dedicated reference at peptide delivery and GCC cold chain for the operational considerations.
For the full UAE regulatory context covering research peptide procurement, see Is it legal to buy peptides in Dubai and the UAE.
frequently asked questions.
The questions below cover the most common queries from UAE-based researchers and procurement teams. Each answer is independently sourced and can be cross-referenced against the linked product pages and lab results.
What does MOTS-c stand for?
MOTS-c is named after its origin: a mitochondrial open reading frame within the 12S rRNA region of mitochondrial DNA. The -c denotes the specific peptide fragment characterized in the founding 2015 paper. It is a 16-amino-acid peptide encoded within the mitochondrial 12S ribosomal RNA region. Unlike all conventional signalling peptides which are encoded in the nuclear genome, MOTS-c is encoded in mitochondrial DNA, which makes it a member of the mitochondrial-derived peptide (MDP) class.
When was MOTS-c discovered?
MOTS-c was first characterised in 2015 by Lee and colleagues in a landmark paper in Cell Metabolism (Lee C, Zeng J, Drew BG, et al. Cell Metab. 2015;21(3):443-454. PMID: 25738959). The discovery came from a systematic search of the mitochondrial genome for hidden open reading frames.
Is MOTS-c FDA approved?
No. MOTS-c has no regulatory approval as a pharmaceutical in any jurisdiction. It is supplied as a research peptide for laboratory use only. The published evidence base is predominantly mouse models and in vitro mechanistic studies.
What is a MOTS-c peptide pen?
A MOTS-c peptide pen is a pre-filled research delivery device loaded with reconstituted MOTS-c solution at a fixed concentration. It is not a writing implement. The format provides dosing consistency, sterility through the device seal, and removes the need for laboratory reconstitution at the point of use.
Where can I buy MOTS-c in Dubai or the UAE?
BodyPharm UAE supplies MOTS-c in the pre-filled peptide pen format with HPLC-verified purity and independent third-party Certificates of Analysis. Same-day delivery is available across Dubai, with one to three day delivery to other emirates. The product page at /uae/product/mots-c-pen carries the current batch information.
Why is MOTS-c called an "exercise mimetic"?
The Reynolds 2021 Nature Communications paper reported that exercise induces endogenous MOTS-c expression in human skeletal muscle, and that intermittent MOTS-c treatment in mice increased physical capacity and improved measures of healthspan. The combination of exercise-induced expression in humans and exogenous-administration effects in mice supports the framing of MOTS-c as an exercise-mimetic research compound. The framing remains a research hypothesis rather than a clinical claim.
How does MOTS-c relate to other mitochondrial-derived peptides?
MOTS-c is the most extensively characterised mitochondrial-derived peptide (MDP). Other MDPs include humanin (encoded in mitochondrial 16S rRNA) and the small humanin-like peptides (SHLPs). MOTS-c was the second major MDP characterised (after humanin) and is the one most commonly available as a research peptide in pen format.
How is MOTS-c stored?
Lyophilised MOTS-c is best stored at minus 20 degrees Celsius in opaque vials away from light and moisture. Reconstituted MOTS-c in solution should be held at 2 to 8 degrees Celsius and used within the stability window documented on the Certificate of Analysis. Cold-chain integrity from supplier through delivery is a precondition for any subsequent stability claim, particularly across the GCC summer months.
related research peptides.
MOTS-c sits within a broader research peptide category that BodyPharm UAE supplies and documents in parallel. The references below provide background on adjacent research compounds frequently studied alongside MOTS-c.
A GLP-1 / GIP / glucagon triple agonist studied across metabolic indications. Researchers comparing mitochondrial-derived peptide effects on metabolic homeostasis with incretin-pathway effects reference both compounds. Read more.
A growth-hormone-releasing-factor analog with established effects on adipose tissue and lipid metabolism. Used in parallel with MOTS-c in metabolic research designs. Read more.
A coenzyme central to mitochondrial energy metabolism and sirtuin activation. The mitochondrial focus of both MOTS-c and NAD+ research makes them a natural pairing in cellular bioenergetics studies. Read more.
For the full BodyPharm UAE research peptide catalogue with current batch CoAs, see /uae/peptides.
HPLC-verified MOTS-c in the pre-filled research pen format. Batch-specific CoA, same-day Dubai delivery.