Principal investigators and laboratory institutions looking to buy MOTS-c in the USA require rigorous analytical verification, lot-to-lot consistency, and rapid domestic distribution. PX1 Research supplies USA-synthesized MOTS-c for in vitro and preclinical laboratory research, fully supported by ISO 17025 third-party Certificate of Analysis (COA) testing.
Principal investigators and laboratory institutions looking to buy MOTS-c in the USA require rigorous analytical verification, lot-to-lot consistency, and rapid domestic distribution. PX1 Research supplies USA-synthesized MOTS-c for in vitro and preclinical laboratory research, fully supported by ISO 17025 third-party Certificate of Analysis (COA) testing.
To buy MOTS-c in the USA for laboratory research, qualified facilities require analytical transparency and documented chemical purity. MOTS-c (Mitochondrial Open Reading Frame of the 12S rRNA Type-c) is a 16-amino acid mitochondrial-derived peptide investigated for its role in cellular metabolic regulation, energy homeostasis, and exercise-capacity pathways in experimental models.
PX1 Research provides researchers across North America access to ultra-pure, USA-synthesized peptides. Every batch of our MOTS-c peptide undergoes rigorous testing to guarantee sequence integrity, accurate molecular weight, and low endotoxin levels. Laboratories can explore our complete catalog of research peptides or establish institutional supply lines through our wholesale lab portal.
MOTS-c is a short, naturally occurring peptide encoded within the mitochondrial genome—specifically within the 12S ribosomal RNA (rRNA) gene region. Composed of a 16-amino acid sequence (Met-Arg-Trp-Gln-Glu-Met-Gly-Tyr-Ile-Phe-Tyr-Pro-Arg-Lys-Leu-Arg), it represents a unique class of signaling molecules termed mitochondrial-derived peptides (MDPs).
Unlike classic nuclear-encoded peptides, MOTS-c is synthesized directly within the mitochondrial matrix or transcribed via non-canonical translation processes before acting as an autocrine, paracrine, and endocrine messenger. Structural analyses demonstrate that its bioactivity depends heavily on maintaining its secondary structure and precise peptide chain sequence during synthesis and storage.
Preclinical studies indicate that MOTS-c acts primarily as a metabolic regulator through activation of the AMP-activated protein kinase (AMPK) signaling cascade. In cell culture models, administration of MOTS-c leads to an increase in intracellular AMP relative to ATP, triggering AMPK phosphorylation. This activation downregulates anabolic energy-consuming pathways while enhancing catabolic energy-generating processes.
Furthermore, mechanistic research demonstrates that MOTS-c intersects with the folate-methionine cycle. By inhibiting the folate cycle and altering 5-methyltetrahydrofolate (5-MTHF) levels, MOTS-c promotes de novo purine biosynthesis inhibition, leading to accumulation of 5-aminoimidazole-4-carboxamide ribonucleotide (AICAR)—a known endogenous activator of AMPK. Under metabolic stress, MOTS-c translocates to the nucleus where it interacts with antioxidant response elements (ARE) and transcription factors such as Nrf2 to regulate stress-responsive gene expression.
In rodent models of high-fat diet-induced metabolic dysfunction, researchers have evaluated MOTS-c for its capacity to restore systemic metabolic flexibility. In vivo data demonstrate that systemic administration of MOTS-c in murine models enhanced glucose clearance, improved peripheral insulin sensitivity, and reduced hepatic lipid accumulation.
In vitro assays using skeletal muscle cell cultures suggest that MOTS-c stimulates GLUT4 translocation to the cell membrane independently of insulin, facilitating direct glucose uptake. Investigators studying metabolic syndrome and type 2 diabetes pathology utilize MOTS-c to explore non-insulin-dependent glucose disposal mechanisms. Additional research models highlight its capacity to suppress inflammatory cytokines in adipose tissue, suppressing systemic low-grade inflammation associated with metabolic stress. To read deeper analyses on metabolic pathways, explore our research library hub.
A major focus of current MOTS-c investigation centers on physical performance, mitochondrial biogenesis, and exercise mimetics. In aged murine models, treatment with MOTS-c resulted in marked improvements in treadmill performance, grip strength, and oxygen consumption during acute exercise protocols.
Preclinical data suggest that MOTS-c enhances skeletal muscle plasticity by upregulating markers of mitochondrial biogenesis, including peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α). These findings have established MOTS-c as a primary subject in studies examining age-related physical decline, muscle atrophy, and metabolic performance degradation.
When designing mitochondrial and metabolic protocols, investigators often evaluate MOTS-c alongside complementary research compounds. The table and comparative analysis below illustrate key differences among peptides in this research space:
While MOTS-c targets nuclear translocation and AMPK activation via folate cycle modulation, SS-31 (Elamipretide) acts directly within the inner mitochondrial membrane by binding cardiolipin to reduce reactive oxygen species (ROS). Meanwhile, Humanin—another prominent mitochondrial-derived peptide—primarily functions via anti-apoptotic signaling pathways and cytoprotection. In contrast, metabolic incretin analogs such as Semaglutide operate via extracellular G-protein coupled receptor (GPCR) agonism rather than intracellular or mitochondrial genome signaling. Comparative study designs frequently evaluate these distinct modes of action to map overlapping metabolic networks; see our detailed mitochondrial peptides overview for extended technical comparisons.
When researchers buy MOTS-c in the USA from PX1 Research, every lot is subjected to rigorous independent laboratory verification. High-Performance Liquid Chromatography (RP-HPLC) is performed to verify peptide purity levels exceeding 98.0%, confirming the absence of truncated sequences, deletion peptides, or residual synthesis reagents.
Mass Spectrometry (ESI-MS or MALDI-TOF) is conducted to verify the exact molecular mass (1874.3 Da) against theoretical values. Additionally, all lots undergo USP <85> Bacterial Endotoxin testing via Limulus Amebocyte Lysate (LAL) assays to ensure levels remain below standard lab threshold limits (<0.1 EU/mg). Full Certificate of Analysis (COA) documentation containing raw chromatograms and mass spectra is downloadable for every product batch.
For optimal stability and bioactivity in experimental assays, proper handling of lyophilized MOTS-c powder is critical. Upon receipt, unopened vials should be stored at -20°C or -80°C in a dry, dark environment.
Reconstitution should take place in a sterile laminar flow hood. Lyophilized MOTS-c is readily soluble in sterile bacteriostatic water, sterile water for injection, or phosphate-buffered saline (PBS, pH 7.4). After adding the solvent along the inner vial wall, allow the peptide to hydrate naturally without aggressive vortexing, which can cause protein shearing or aggregation. Reconstituted aliquots should be frozen at -80°C to minimize degradation over repeated freeze-thaw cycles. For further protocols on cellular pathways, consult our guide on AMPK pathway investigation.
International shipping of research peptides carries risks of custom delays, ambient temperature exposure during transit, and inconsistent quality control standards. PX1 Research operates state-of-the-art domestic warehousing in California and Arizona, guaranteeing same-day dispatch for orders placed Monday through Friday before cut-off times.
By sourcing USA-manufactured research peptides directly from PX1 Research, laboratory managers ensure unbroken cold-chain logistics, rapid delivery, and complete lot traceability from synthesis to benchtop.
Where can domestic institutions buy MOTS-c in the USA for research?
PX1 Research provides USA-manufactured, third-party verified MOTS-c for qualified laboratory and academic researchers. Orders ship directly from domestic centers in California and Arizona with complete COA documentation.
What analytical testing is performed on PX1 Research MOTS-c batches?
Every lot undergoes Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) for purity determination (>98%), Electrospray Ionization Mass Spectrometry (ESI-MS) for sequence verification, and USP <85> LAL testing for bacterial endotoxin quantification.
What is the sequence and molecular weight of MOTS-c?
MOTS-c is a 16-amino acid peptide with the primary sequence Met-Arg-Trp-Gln-Glu-Met-Gly-Tyr-Ile-Phe-Tyr-Pro-Arg-Lys-Leu-Arg and a theoretical molecular weight of approximately 2174.6 Da.
How should lyophilized MOTS-c be stored upon delivery?
Lyophilized MOTS-c should be kept at -20°C or -80°C for long-term stability. Avoid exposure to light, moisture, and elevated ambient temperatures.
What solvent is recommended for reconstituting MOTS-c for in vitro assays?
Sterile bacteriostatic water, sterile non-pyrogenic water, or sterile PBS (pH 7.4) are commonly used solvents. Swirl gently to dissolve; do not agitate vigorously.
What is the primary cellular target of MOTS-c in preclinical models?
In vitro and animal models show that MOTS-c activates the AMPK signaling pathway, modulates folate-methionine metabolism, and translocates to the nucleus under cellular stress.
How does MOTS-c differ structurally from Humanin?
Both are mitochondrial-derived peptides (MDPs), but MOTS-c is a 16-amino acid peptide encoded from 12S rRNA targeting AMPK pathways, while Humanin is a 24-amino acid peptide encoded from 16S rRNA primarily involved in cytoprotection and anti-apoptotic pathways.
Can institutions request bulk quantities of MOTS-c for larger studies?
Yes, laboratory facilities and academic institutions can request custom lot sizes and institutional accounts via the PX1 Research wholesale catalog.
All products are sold strictly for laboratory and research use only. Not for human or veterinary use, diagnosis, treatment or consumption. Statements have not been evaluated by the FDA.