PX1 Research supplies USA-manufactured, analytical-grade MOTS-c peptide tailored specifically for institutional laboratories and preclinical researchers. Every lot undergoes rigorous third-party testing via RP-HPLC, Mass Spectrometry, and limulus amebocyte lysate endotoxin screening to ensure unmatched purity and experimental reproducibility.
PX1 Research supplies USA-manufactured, analytical-grade MOTS-c peptide tailored specifically for institutional laboratories and preclinical researchers. Every lot undergoes rigorous third-party testing via RP-HPLC, Mass Spectrometry, and limulus amebocyte lysate endotoxin screening to ensure unmatched purity and experimental reproducibility.
Investigators seeking to buy MOTS-c peptide for laboratory experimentation require high-purity, analytical-grade material to guarantee robust, reproducible outcomes. MOTS-c (Mitochondrial Open Reading Frame of the 12S rRNA Type-c) is a 16-amino-acid peptide encoded within the mitochondrial genome, heavily investigated for its novel roles in cellular energy homeostasis, metabolic regulation, and exercise-capacity research. Because minor impurities or micro-heterogenous peptide fragments can alter signaling cascades in cell cultures or rodent models, sourcing fully characterized reagents is essential.
When purchasing peptides for analytical or *in vitro* applications, institutional laboratories must evaluate supplier transparency, lot-specific documentation, and manufacturing standards. PX1 Research provides fully documented research reagents manufactured in domestic, GMP-compliant facilities. Investigators can explore our comprehensive catalog of all research peptides to support comparative metabolic studies and downstream cellular assays.
MOTS-c represents a distinct class of signaling molecules known as mitochondrial-derived peptides (MDPs). Unlike traditional peptide hormones synthesized from nuclear DNA, MOTS-c is translated from a short open reading frame (sORF) situated within the mitochondrial 12S ribosomal RNA gene. Comprising the specific 16-amino-acid sequence Met-Arg-Trp-Gln-Glu-Met-Gly-Tyr-Ile-Phe-Tyr-Pro-Arg-Lys-Leu-Arg, this peptide acts as a retrograde signaling molecule that communicates mitochondrial metabolic status directly to the nuclear genome.
Under cellular stress conditions, such as nutrient deprivation or metabolic disruption, MOTS-c translocates from the mitochondrion to the cell nucleus. Once inside the nuclear compartment, it interacts with adaptive transcription factors to rebind specific promoter regions, modulating nuclear gene expression involved in antioxidant defense, glucose transport, and fatty acid oxidation. Understanding this inter-organellar communication loop is central to contemporary peptidomic and metabolic research.
Preclinical studies indicate that MOTS-c functions primarily through activation of the 5'-AMP-activated protein kinase (AMPK) pathway. AMPK serves as the central metabolic master-switch in eukaryotic cells, responding to shifts in the AMP/ATP ratio. When introduced to cellular assays, MOTS-c promotes AMPK phosphorylation without inducing cytotoxic ATP depletion, triggering downstream signaling pathways that promote catabolic ATP-generating processes while inhibiting non-essential anabolic pathways.
In addition to AMPK activation, *in vitro* investigations reveal that MOTS-c influences the folate cycle and *de novo* purine biosynthesis. By inhibiting folate transport and altering intracellular levels of 5-aminoimidazole-4-carboxamide ribonucleotide (AICAR), MOTS-c engages intermediate metabolic checkpoints. This cascade promotes glucose uptake via GLUT4 translocation independent of classical insulin receptor signaling, offering a unique biochemical model for studying non-canonical glucose disposal mechanisms.
Published preclinical literature highlights MOTS-c as a key regulator of physical capacity and mitochondrial bioenergetics in animal models. Rodent studies evaluating treadmill endurance have demonstrated that systemic administration of MOTS-c significantly enhances running distance, oxygen consumption, and heat production. These phenotypic changes are accompanied by marked increases in skeletal muscle oxidative capacity, mitochondrial density, and reduced accumulation of intramuscular lipid species.
Furthermore, research involving diet-induced obese rodent models shows that MOTS-c administration blunts high-fat diet-induced body weight gain and hyperinsulinemia. By shifting whole-body substrate utilization toward fatty acid oxidation, the peptide preserves insulin sensitivity in peripheral tissues. Researchers examining metabolic flexibility frequently cross-reference these findings against broader investigations into mitochondrial signaling pathways to elucidate the underlying transcriptional networks.
To properly contextualize MOTS-c within metabolic and bioenergetic literature, researchers often compare its physiological profile against other mitochondria-targeted compounds and metabolic regulators. While MOTS-c regulates nuclear gene expression via retro-signaling, peptides like SS-31 (Elamipretide) interact directly with cardiolipin in the inner mitochondrial membrane to optimize electron transport chain efficiency and diminish reactive oxygen species (ROS) production.
Similarly, Humanin, another prominent mitochondrial-derived peptide, primarily targets cytoprotective and anti-apoptotic pathways, whereas MOTS-c demonstrates a more targeted influence on systemic energy expenditure and carbohydrate handling. In small-molecule research, agents such as 5-Amino-1MQ target NNMT inhibition to enhance intracellular NAD+ levels, complementing the AMPK-driven metabolic reprogramming initiated by MOTS-c. Comparing these distinct mechanisms allows research teams to design multi-factorial *in vitro* study protocols.
When purchasing high-purity peptides, reliance on generic certificates of analysis (COAs) is insufficient for rigorous quantitative assays. PX1 Research enforces strict quality assurance protocols by subjecting every manufactured lot of MOTS-c to independent third-party analytical testing at an accredited ISO 17025 laboratory. Every batch must pass rigorous Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) to confirm chemical purity exceeds 99.0%.
To verify structural integrity and exact molecular mass (1222.5 g/mol), Electrospray Ionization Mass Spectrometry (ESI-MS) is conducted in parallel. ESI-MS spectra confirm the presence of the full-length 16-amino-acid peptide while ruling out truncated sequences, deletion peptides, or residual protecting group adducts resulting from incomplete solid-phase peptide synthesis (SPPS). Lot-specific COAs detailing HPLC chromatograms and mass spectra are publicly accessible for every shipment.
In cell culture experiments and *in vivo* animal models, lipopolysaccharide (LPS) contamination—commonly known as endotoxin—can ruin experimental validity by triggering non-specific inflammatory responses via Toll-like receptor 4 (TLR4) activation. Standard synthetic peptide manufacturing often leaves trace bacterial endotoxins or trifluoroacetate (TFA) salts that interfere with delicate biochemical assays.
PX1 Research mitigates this risk by subjecting all MOTS-c lots to quantitative Limulus Amebocyte Lysate (LAL) testing to verify endotoxin levels remain below strictly enforced thresholds (<0.01 EU/mg). Furthermore, our peptides undergo secondary counter-ion exchange processing to minimize residual TFA content, ensuring that observed cellular responses are attributable solely to the MOTS-c peptide sequence rather than synthetic artifacts or inflammatory contaminants.
To maintain peptide stability and prevent physical aggregation during preparation, research personnel should follow standardized reconstitution protocols within a laminar flow hood. Lyophilized MOTS-c should be allowed to equilibrate to room temperature before opening the vial to prevent atmospheric moisture condensation on the cake.
For basic *in vitro* applications, reconstitute the peptide using sterile Bacteriostatic Water or sterile 0.9% Sodium Chloride Injection. Gently swirl or invert the vial until complete dissolution is achieved; aggressive vortexing or vigorous agitation must be avoided, as shear forces can induce peptide denaturation or fibril formation. For working solutions requiring long-term stability in culture media, aliquot the stock solution into single-use polypropylene microtubes to eliminate freeze-thaw degradation cycles.
Lyophilized MOTS-c peptide is stable at room temperature for short periods during transit, but long-term storage requires controlled environmental conditions. Upon receipt, lyophilized vials should be stored in a desiccated freezer at -20°C or -80°C to preserve chemical integrity for up to 24 months. Protect product vials from direct light exposure.
Once reconstituted into liquid stock solutions, MOTS-c should be stored at 2°C to 8°C for short-term use (up to 7 days). For extended analytical projects, reconstituted aliquots must be frozen at -80°C. Researchers should note that repeated thermal cycling accelerates peptide hydrolysis and oxidation of sensitive residues (such as Methionine at positions 1 and 6, and Tyrosine at position 8). Discard any solutions exhibiting turbidity or precipitation.
PX1 Research is dedicated to supplying high-tier research institutions, universities, and private biotechnology firms with premium-grade peptide reagents. By operating state-of-the-art domestic manufacturing facilities adhering to cGMP standards, we maintain complete control over raw material sourcing, synthesis parameters, and purification steps. Our standard operations ensure immediate dispatch, featuring same-day shipping (Monday through Friday) directly from our distribution hubs in California and Arizona.
Whether your laboratory requires individual vials for preliminary screening or seeks bulk procurement via a specialized wholesale lab account, PX1 Research delivers full lot traceability, uncompromised purity, and dedicated customer support tailored to scientific professionals. Explore our complete line of target compounds today to advance your laboratory's metabolic research.
What is the certified chemical purity of PX1 Research MOTS-c?
PX1 Research guarantees that every lot of MOTS-c peptide maintains a minimum chemical purity of 99.0% as determined by third-party RP-HPLC testing.
How is MOTS-c lot identity verified?
Lot identity and molecular mass (1222.5 g/mol) are verified via Electrospray Ionization Mass Spectrometry (ESI-MS), ensuring complete peptide chain assembly without deletions.
What are the endotoxin limits for PX1 Research peptides?
All peptide lots undergo LAL endotoxin testing, ensuring levels remain strictly below <0.01 EU/mg to prevent confounding inflammatory responses in cell or animal models.
What solvent should be used to reconstitute MOTS-c for research use?
For most laboratory protocols, MOTS-c reconstitutes readily in sterile Bacteriostatic Water or sterile 0.9% Normal Saline. Swirl gently without vortexing.
How should reconstituted MOTS-c stock solutions be stored?
Reconstituted stock solutions should be aliquoted into single-use microcentrifuge tubes and stored at -80°C to prevent degradation from freeze-thaw cycles.
Where does PX1 Research manufacture and ship MOTS-c?
All PX1 Research peptides are synthesized in USA-based, GMP-compliant facilities and shipped directly from fulfillment centers in California and Arizona.
Can institutions purchase MOTS-c peptide in bulk quantities?
Yes, university laboratories and commercial institutions can open a wholesale lab account to access bulk quantities, custom synthesis options, and volume pricing.
How does MOTS-c compare to SS-31 in metabolic research?
MOTS-c acts primarily as a nuclear retro-signaling molecule regulating AMPK and glucose metabolism, whereas SS-31 targets mitochondrial inner-membrane cardiolipin to reduce ROS production.
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.