Sourcing analytical-grade mitochondrial peptides requires rigorous supplier verification, robust analytical testing, and transparent lot traceability. Laboratory researchers investigating metabolic regulation and cellular bioenergetics can obtain high-purity MOTS-c peptide from verified domestic suppliers equipped with independent laboratory validation. Ensuring compliance with strict purity standards protects in vitro and preclinical models from confounding artifacts caused by synthesis impurities or endotoxin contamination.
Sourcing analytical-grade mitochondrial peptides requires rigorous supplier verification, robust analytical testing, and transparent lot traceability. Laboratory researchers investigating metabolic regulation and cellular bioenergetics can obtain high-purity MOTS-c peptide from verified domestic suppliers equipped with independent laboratory validation. Ensuring compliance with strict purity standards protects in vitro and preclinical models from confounding artifacts caused by synthesis impurities or endotoxin contamination.
To obtain analytical-grade MOTS-c for laboratory research, investigators should source directly from domestic vendors specializing in custom peptide synthesis and verified quality control. Reliable sourcing requires suppliers that publish batch-specific Certificates of Analysis (COAs) featuring Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) purity analysis and Electrospray Ionization Mass Spectrometry (ESI-MS) identity confirmation. PX1 Research supplies USA-manufactured MOTS-c peptide with guaranteed ≥98% purity and verified endotoxin testing for preclinical research environments.
Sourcing mitochondrial-derived peptides from unverified vendors exposes research models to variable peptide content, TFA (trifluoroacetic acid) salt retention, sequence truncation fragments, and bacterial lipopolysaccharide (LPS) contamination. Researchers evaluating where to get mots c peptide must prioritize suppliers utilizing ISO 17025 accredited testing facilities and GMP-compliant manufacturing environments to maintain experimental reproducibility across cell culture assays and animal models.
MOTS-c (Mitochondrial Open Reading Frame of the 12S rRNA Type-c) represents a 16-amino acid peptide encoded within the mitochondrial genome rather than the nuclear DNA. First identified in mitochondrial-derived peptide screening, MOTS-c acts as a signaling molecule that translocates to the nucleus under cellular stress conditions. Its unique primary sequence (Met-Arg-Trp-Gln-Glu-Met-Gly-Tyr-Ile-Phe-Tyr-Pro-Arg-Lys-Leu-Arg) directs distinct metabolic regulatory pathways in mammalian tissue culture models.
Unlike classical nuclear-encoded peptides, mitochondrial-derived peptides (MDPs) mediate retrograde signaling from mitochondria to the nucleus. This inter-organellar communication pathway coordinates stress responses, substrate utilization, and bioenergetic homeostasis. Investigators utilizing research peptides targeting cellular energy pathways frequently analyze MOTS-c alongside other novel mitochondrial factors to map nuclear-mitochondrial crosstalk mechanisms.
In preclinical literature, MOTS-c is primary investigated for its roles in glucose homeostasis, insulin signaling pathways, and lipid oxidation. In vitro assays in skeletal muscle cells indicate that MOTS-c target pathways involve the activation of AMP-activated protein kinase (AMPK), a central regulator of cellular energy balance. Activation of AMPK downstream of MOTS-c exposure leads to increased glucose uptake independent of classical insulin receptor pathways in rodent tissue models.
Furthermore, preclinical animal models investigating metabolic regulation suggest that MOTS-c administration influences systemic energy expenditure and exercise-capacity parameters. In high-fat diet rodent models, research demonstrates that MOTS-c suppresses diet-induced metabolic dysfunction, enhances fatty acid oxidation, and preserves mitochondrial bioenergetics under metabolic stress. These mechanisms render the compound a primary tool in peptides for metabolic research.
When determining where to acquire MOTS-c for institutional or academic research, investigators must establish stringent analytical benchmarks. Peptides synthesized via Solid-Phase Peptide Synthesis (SPPS) naturally generate deletion sequences and chemical modifications that can interfere with receptor binding or cellular signaling if not thoroughly purified.
To ensure experimental validity, every lot of MOTS-c must satisfy the following critical quality metrics:
1. Purity Verification via RP-HPLC: The integration peak of the primary peptide must demonstrate ≥98% purity, confirming the absence of truncated fragments or organic synthesis side-products. 2. Mass Spectrum Identity Confirmation: ESI-MS or MALDI-TOF analysis must show a exact observed molecular weight matching the theoretical monoisotopic mass of MOTS-c (2174.6 g/mol). 3. Endotoxin Quantification: Bacterial endotoxins (LPS) can activate Toll-like receptors (TLR4) in cell cultures, skewing immunological and metabolic data. Reliable suppliers maintain endotoxin levels below 0.1 EU/mg. 4. Trifluoroacetic Acid (TFA) Counterion Analysis: Residual TFA from HPLC elution gradients can induce cytotoxicity in sensitive cell cultures; standardizing counterions or measuring TFA limits is essential for sensitive cellular bioenergetic assays.
To understand the distinct physiological mechanisms operating within mitochondrial and metabolic pathways, researchers often design multi-compound comparative models. MOTS-c is commonly evaluated alongside other targeted compounds such as SS-31 and Humanin.
While MOTS-c acts primarily as a retrograde signaling peptide activating nuclear gene transcription and the AMPK axis, SS-31 (Elamipretide) targets cardiolipin within the inner mitochondrial membrane to prevent cristae destabilization and reduce reactive oxygen species (ROS) emission. Conversely, Humanin—another prominent mitochondrial-derived peptide—primarily mediates cytoprotection and anti-apoptotic signaling pathways via STAT3 signaling. Comparing these compounds allows researchers to isolate structural membrane stabilization from transcriptional signaling cascades in cellular models.
Proper handling and storage are critical to preserve the structural integrity of lyophylized MOTS-c. Hydrophobic amino acids within the MOTS-c sequence (such as Ile, Phe, and Leu) require precise reconstitution procedures to avoid aggregation or incomplete solubilization.
Reconstitution Procedures: - Allow the lyophilized vial to equilibrate to room temperature before opening to minimize moisture condensation inside the container. - Reconstitute using sterile Bacteriostatic Water or sterile phosphate-buffered saline (PBS, pH 7.4) depending on the requirements of your in vitro assay. - Gently swirl or invert the vial; avoid vigorous vortexing, which can introduce mechanical shear stress and induce peptide aggregation. - Refer to the peptide reconstitution calculator for precise concentration and volumetric modeling.
Storage Parameters: - Lyophilized Powder: Store at -20°C or -80°C in a desiccated environment for long-term stability (up to 24 months). - Reconstituted Aliquots: Store working stock solutions in low-binding polypropylene tubes at -80°C. Avoid repeated freeze-thaw cycles, which degrade peptide bonds and diminish biological activity in cell culture assays.
A authentic Certificate of Analysis must accompany every lot of MOTS-c peptide. Researchers should never accept generalized or representative COAs; each document must reflect the specific lot number printed on the product vial.
When inspecting a COA from PX1 Research or an equivalent ISO 17025 accredited testing facility, verify that the chromatogram displays a clean baseline with sharp resolution of the main analyte peak. The mass spec readout should show the expected m/z ions representing the multiple ionization states of the MOTS-c molecule. Transparent batch documentation guarantees that non-specific effects observed during preclinical research stem exclusively from the target peptide rather than background contaminants.
Academic institutions, biotechnology firms, and contract research organizations (CROs) demand consistent supply chain security and rapid delivery schedules. PX1 Research maintains state-of-the-art facilities in California and Arizona, providing immediate dispatch for institutional research orders.
All orders placed Monday through Friday before cut-off times ship same-day, arriving in temperature-stable packaging engineered to protect peptide integrity during transit. For large-scale screening protocols, high-throughput assays, or long-term animal studies, laboratories can access wholesale research peptides programs to secure uniform single-lot batches across extended experimental timelines.
Where can I source verified MOTS-c peptide for research?
Analytical-grade MOTS-c peptide for laboratory research can be sourced from PX1 Research. Every batch is manufactured in USA-based facilities and verified via independent RP-HPLC and ESI-MS testing with lot-specific COAs.
What purity level is required for MOTS-c in cell culture assays?
In vitro bioenergetic and cellular assays require a minimum purity of 98%. Lower purity levels contain synthetic fragments and organic residues that can cause cellular toxicity or non-specific signaling artifacts.
What is the molecular weight and sequence of MOTS-c?
MOTS-c has a theoretical monoisotopic molecular weight of 2174.6 g/mol and consists of a 16-amino acid sequence: Met-Arg-Trp-Gln-Glu-Met-Gly-Tyr-Ile-Phe-Tyr-Pro-Arg-Lys-Leu-Arg.
How should MOTS-c peptide be stored upon receipt?
Lyophilized MOTS-c should be stored at -20°C or -80°C in a dry environment. Once reconstituted into liquid solution, aliquot the stock into low-protein-binding tubes and store at -80°C, avoiding repeated freeze-thaw cycles.
Does PX1 Research perform endotoxin testing on MOTS-c?
Yes. Every lot of MOTS-c provided by PX1 Research undergoes strict Limulus Amebocyte Lysate (LAL) testing to confirm endotoxin levels remain below 0.1 EU/mg, making it suitable for sensitive preclinical research.
What solvent is recommended for reconstituting MOTS-c?
MOTS-c can be reconstituted using sterile Bacteriostatic Water or sterile PBS (pH 7.4). Gentle inversion is recommended to achieve complete dissolution without inducing peptide aggregation.
How does MOTS-c differ from SS-31 in research applications?
MOTS-c is a mitochondrial-derived signaling peptide that activates nuclear transcription and the AMPK pathway, whereas SS-31 is a synthetic tetrapeptide that binds cardiolipin in the inner mitochondrial membrane to reduce oxidative stress.
Is MOTS-c supplied by PX1 Research intended for human use?
No. All compounds supplied by PX1 Research, including MOTS-c, are strictly for laboratory research use only in in vitro assays and preclinical animal models. They are not for human consumption, medical, or diagnostic use.
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.