MOTS-c Supplier

Sourcing Premium MOTS-c for Laboratory Research

A verified MOTS-c supplier provides researchers with high-purity, synthetically manufactured MOTS-c (Mitochondrial Open Reading Frame of the 12S rRNA Type-c) paired with lot-specific Certificate of Analysis (COA) documentation. Reliable suppliers offer compounds analyzed via RP-HPLC and ESI-MS to ensure strict molecular identity, sequence accuracy, and minimal endotoxin levels for preclinical investigations.

As research into mitochondrial-derived peptides (MDPs) expands across biochemistry and cellular biology, obtaining reagents with consistent analytical integrity is fundamental. Impurities, residual trifluoroacetic acid (TFA), or sequence variations can significantly confound baseline signaling assays and cell viability metrics. Laboratories seeking to source high-grade reagents can review our MOTS-c research peptide specifications to support controlled experimental protocols.

PX1 Research operates as a dedicated supplier for academic, clinical, and institutional researchers requiring standardized peptide synthesis. Every lot of our research peptides undergoes exhaustive verification in ISO 17025 accredited laboratories to guarantee batch-to-batch consistency and high structural purity.

Molecular Characterization of MOTS-c: A Mitochondrial-Derived Peptide

MOTS-c is a 16-amino acid peptide encoded within the mitochondrial 12S ribosomal RNA (rRNA) gene. Unlike the vast majority of signaling peptides transcribed from nuclear DNA, MOTS-c represents a distinct class of retrograde signaling molecules generated directly within the mitochondrial matrix. Its primary structure consists of the sequence Met-Arg-Trp-Gln-Glu-Met-Gly-Tyr-Ile-Phe-Tyr-Pro-Arg-Lys-Leu-Arg, with a calculated molecular weight of approximately 2174.6 Da.

In cellular models, MOTS-c functions as a novel endocrine-like signaling factor that translocates to the nucleus under conditions of metabolic stress. Preclinical studies indicate that upon activation, MOTS-c interacts with nuclear transcription factors to regulate nuclear gene expression, particularly those associated with nutrient sensing, folate metabolism, and stress response cascades.

Understanding the structural nuances of mitochondrial-derived peptides requires high-resolution analytical tools. Because MOTS-c contains methionine residues susceptible to oxidation during synthesis or handling, working with a specialized supplier ensures that protective packaging and lyophilization standards prevent artifactual modification prior to reconstituting the sample.

Preclinical Research Domains: Mitochondrial Function and Metabolic Regulation

In preclinical settings, MOTS-c is primarily investigated for its central role in mitochondrial function and metabolic regulation. Mitochondria serve as the primary energetic hub of eukaryotic cells; metabolic stressors often induce signaling cascades that alter mitochondrial bioenergetics. In vitro and animal models demonstrate that MOTS-c acts as an active mediator in maintaining metabolic homeostasis during nutrient excess or deprivation.

Research in rodent models suggests that MOTS-c targeting influences the folate-methionine cycle, modulating de novo purine synthesis and downstream metabolic pathways. In muscle tissue assays, MOTS-c administration has been observed to activate AMP-activated protein kinase (AMPK), a master regulator of cellular energy status. This activation triggers glucose uptake independent of classical insulin pathways, enhancing GLUT4 transporter translocation to the plasma membrane.

Additionally, investigative models exploring metabolic dysregulation evaluate how MOTS-c expression shifts in response to high-fat dietary interventions. Data indicate that exogenous MOTS-c supplementation in murine subjects helps preserve insulin sensitivity and mitigates diet-induced weight gain by promoting fatty acid oxidation in skeletal muscle tissue.

Exercise Capacity and Cellular Energy Signaling Models

Beyond baseline metabolic regulation, MOTS-c is widely evaluated in models assessing physical performance, endurance, and exercise-capacity research. Physical exertion induces robust stress signals within skeletal muscle mitochondria, prompting the expression and release of endogenous MOTS-c into circulating fluids.

In vivo trials involving treadmill running protocols in mice demonstrate that MOTS-c levels rise significantly in response to acute exercise. Exogenous treatment in aged or sedentary animal models has been shown to improve running capacity, peak workload, and oxygen consumption metrics. Researchers hypothesize that this mechanism relies on MOTS-c enhancing heat shock responses and upregulating antioxidant gene networks via nuclear interaction with the transcription factor Nrf2.

Laboratory researchers utilizing MOTS-c in exercise physiology models analyze muscle fiber type composition, mitochondrial biogenesis markers (such as PGC-1α expression), and systemic energy expenditure. Combining MOTS-c assays with parallel metabolic regulators available through our catalog of research peptides allows investigator teams to map intersecting cellular pathways with high confidence.

Key Criteria for Evaluating a MOTS-c Supplier

Selecting an authoritative peptide supplier involves auditing analytical protocols, manufacturing conditions, and quality management systems. Because minor synthetic discrepancies can yield inactive or cytotoxic fragments, suppliers must adhere to strict parameters:

1. **USA-Based Manufacturing & Facilities:** Synthesis performed in cGMP-compliant or ISO-certified facilities minimizes environmental contamination risks and guarantees strict procedural adherence. 2. **Third-Party Certificate of Analysis (COA):** Every individual synthesis lot must be accompanied by an independent COA verifying identity, purity, and physical parameters. 3. **Analytical Testing Rigor:** Purity evaluation via Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) paired with mass confirmation via Electrospray Ionization Mass Spectrometry (ESI-MS). 4. **Endotoxin Quantification:** Testing via Limulus Amebocyte Lysate (LAL) assays to ensure bacterial endotoxin levels remain below stringent thresholds (<0.01 EU/mg) suitable for cell culture work. 5. **Transparent Lot Traceability:** Clear batch numbering permitting real-time cross-reference against laboratory verification databases.

Analytical Validation: HPLC, Mass Spectrometry, and Endotoxin Testing

Chemical fidelity is non-negotiable in scientific research. When evaluating candidate suppliers, baseline documentation must include full-spectrum chromatograms and mass spectra rather than summary statements.

RP-HPLC analysis separates the target peptide from truncated sequence variants, residual protecting groups, and deletion peptides generated during solid-phase peptide synthesis (SPPS). A standard research threshold demands a minimum purity of 98.0% by peak area integration. Simultaneously, ESI-MS verifies that the observed mass-to-charge ratio (m/z) matches the theoretical monoisotopic mass of MOTS-c, ruling out structural isomers or major chemical adducts.

Furthermore, TFA salt removal is a critical consideration. Standard SPPS cleavage protocols leave residual trifluoroacetate counter-ions, which can exhibit intrinsic toxicity in primary cell cultures. Quality suppliers perform salt exchange steps to ensure the final product exhibits negligible TFA toxicity, supporting unconfounded downstream bioassays.

Handling, Storage, and Reconstitution Protocol for Laboratory Assets

To maintain the structural stability of MOTS-c throughout experimental timelines, proper laboratory handling protocols must be observed upon delivery of lyophilized material:

Lyophilized MOTS-c should be stored at -20°C or -80°C in a desiccated environment away from light exposure. Under these conditions, unopened vials maintain chemical stability for up to 24 months. Before opening, vials should be allowed to equilibrate to room temperature to prevent condensation from introducing moisture into the cake.

Reconstitution should be performed using sterile laboratory-grade diluents such as Bacteriostatic Water, Sterile Water for Injection, or phosphate-buffered saline (PBS), depending on the specific requirement of the target assay. The reconstituting solvent should be gently directed down the glass wall of the vial, followed by gentle swirling. Avoid vigorous mechanical agitation or vortexing, which can induce shear stress and peptide aggregation. Once reconstituted, solution aliquots should be frozen immediately to avoid repeated freeze-thaw cycles.

Comparative Analysis: MOTS-c vs. Related Metabolic Research Peptides

When designing comparative bioenergetic studies, researchers often evaluate MOTS-c alongside other mitochondrial and metabolic regulatory compounds to delineate complementary signaling pathways. For instance, SS-31 targets cardiolipin within the inner mitochondrial membrane to optimize electron transport chain efficiency, whereas MOTS-c operates primarily through nuclear translocation and gene transcription regulation.

In contrast to direct mitochondrial targets, non-peptide metabolic compounds such as 5-Amino-1MQ exert metabolic effects by inhibiting nicotinamide N-methyltransferase (NNMT), thereby modulating intracellular NAD+ and SAM pools. Meanwhile, growth hormone secretagogues like Tesamorelin or Ipamorelin regulate lipid metabolism and lean tissue homeostasis via pituitary-mediated endocrine signaling rather than direct mitochondrial retrograde signaling. Evaluating these distinct mechanistic profiles helps researchers select the precise molecular tool required for their specific physiological or cell culture model.

Sourcing MOTS-c from PX1 Research: Quality Assurance and Distribution

PX1 Research is dedicated to supplying the scientific community with pure, reliable research compounds. Manufactured exclusively in the United States, our peptides are subjected to rigorous analytical validation prior to release.

We maintain inventory across distribution hubs in California and Arizona, facilitating same-day dispatch for orders finalized Monday through Friday prior to cutoff times. Every order includes lot-specific, downloadable COAs verifying HPLC purity profiles and mass spectrum confirmation. Institutional facilities and commercial laboratories conducting large-scale or high-throughput studies can also establish direct wholesale lab accounts for specialized volume fulfillment and dedicated technical support.