Investigators seeking a reliable MOTS-c purchase for in vitro and preclinical research require verified purity, lot-to-lot consistency, and transparent analytical documentation. PX1 Research supplies laboratory-grade MOTS-c engineered specifically for scientific investigation into mitochondrial signaling, metabolic regulation, and cellular homeostasis.
Investigators seeking a reliable MOTS-c purchase for in vitro and preclinical research require verified purity, lot-to-lot consistency, and transparent analytical documentation. PX1 Research supplies laboratory-grade MOTS-c engineered specifically for scientific investigation into mitochondrial signaling, metabolic regulation, and cellular homeostasis.
When executing a MOTS-c purchase for experimental protocols, principal investigators and laboratory managers must ensure the material meets rigorous chemical standards. High-purity MOTS-c (Mitochondrial Open Reading Frame of the 12S rRNA-c) is a 16-amino-acid mitochondrial-derived peptide requiring controlled solid-phase peptide synthesis (SPPS), precise purification, and empirical verification. Substandard reagents containing residual trifluoroacetic acid (TFA), organic solvents, or truncated peptide sequences can compromise in vitro assays and introduce unaccounted variables into animal models.
PX1 Research serves as a premier USA supplier of laboratory-grade peptides, delivering fully characterized research compounds to academic, biotechnology, and institutional facilities. Every lot of our high-purity MOTS-c undergoes rigorous identity and purity testing via Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) and Electrospray Ionization Mass Spectrometry (ESI-MS). By providing comprehensive analytical validation and maintaining strict endotoxin controls, PX1 Research provides laboratories with the baseline consistency required for reproducible, high-impact data generation.
MOTS-c is an encoded mitochondrial-derived peptide (MDP) discovered within the mitochondrial genome, specifically originating from a short open reading frame (sORF) in the 12S ribosomal RNA (rRNA) gene. Composed of 16 amino acids (Met-Met-Gln-Trp-Phe-Met-Asp-Leu-Phe-Leu-Val-Ser-Ser-Val-Gly-Gln), MOTS-c represents a distinct class of signaling molecules that mediate communication between the mitochondria and the nuclear genome—a process referred to as retrograde signaling.
Unlike nuclear-encoded peptides that target mitochondrial organelles, MOTS-c is expressed within the mitochondrial matrix and translocates to the cell nucleus under conditions of metabolic or hyperosmotic stress. In the nucleus, it binds to specific promoter regions and interacts with stress-responsive transcription factors, such as NF-E2-related factor 2 (Nrf2) and heat shock factor 1 (HSF1). This unique origin and dual-localization capability make MOTS-c a primary compound of interest for investigators researching mitochondrial genetics, cellular stress responses, and systemic metabolic crosstalk.
Preclinical investigation into MOTS-c focuses predominantly on its role in metabolic homeostasis, energy sensing, and cellular survival mechanisms. In vitro and rodent models demonstrate that MOTS-c activates AMP-activated protein kinase (AMPK), a master regulator of cellular energy balance. Activation occurs via inhibition of the folate cycle and the methionine cycle, which alters intracellular 5-aminoimidazole-4-carboxamide ribonucleotide (AICAR) levels—a endogenous activator of AMPK.
Through AMPK activation and nuclear gene regulation, MOTS-c research highlights several critical physiological cellular phenomena:
1. Enhanced Glucose Uptake and Insulin Sensitivity: In murine models of diet-induced obesity, MOTS-c administration has been observed to improve skeletal muscle insulin signaling and enhance systemic glucose clearance independent of insulin secretion.
2. Fatty Acid Oxidation and Metabolic Flexibility: In vitro cellular studies demonstrate that MOTS-c upregulates genes involved in beta-oxidation while suppressing lipogenic gene expression, encouraging a metabolic shift toward lipid utilization.
3. Adaptive Stress Response: Under metabolic stress, nuclear translocation of MOTS-c coordinates antioxidant gene networks, mitigating reactive oxygen species (ROS) accumulation and protecting cellular structural integrity.
Researchers evaluating mitochondrial dynamics often cross-reference these signaling pathways with data from our comprehensive research peptide catalog to design controlled, multi-target metabolic assays.
Because AMPK activation is a core cellular response to physical exertion, preclinical researchers frequently investigate MOTS-c as a chemical model for exercise-induced metabolic adaptations. In animal models, systemic treatment with MOTS-c has been reported to enhance physical capacity, improve running endurance in aged mice, and prevent age-associated insulin resistance.
Furthermore, research indicates that MOTS-c targets skeletal muscle tissue—one of the most mitochondria-dense tissues in mammals. In rodent assays, MOTS-c exposure upregulated glucose transporter type 4 (GLUT4) translocation to the plasma membrane, driving glucose uptake without activating classical insulin receptor signaling cascades. These findings position MOTS-c as a key reagent for investigating non-canonical metabolic pathways, sarcopenia, metabolic syndrome, and physical degradation models in preclinical research.
Procuring research compounds requires strict adherence to quality verification standards. When evaluating vendors for a MOTS-c purchase, research facilities should require transparent proof of molecular integrity and purity. Selecting suppliers based solely on price without analytical verification introduces high risk of experimental artifact.
Key quality benchmarks for research-grade MOTS-c include:
- Purity Thresholds via RP-HPLC: The primary peptide peak must represent >98% of total integrated peak area. Chromatographic impurities indicate incomplete synthesis or peptide degradation.
- Mass Verification via Mass Spectrometry: ESI-MS or MALDI-TOF analysis must confirm an exact molecular weight corresponding to the theoretical mass of MOTS-c (2174.6 Da).
- Endotoxin Quantification: Preclinical cell culture and animal models are exceptionally sensitive to lipopolysaccharides (LPS). Reagents should undergo Chromogenic LAL testing to verify endotoxins remain below 0.1 EU/mg.
- TFA Counterion Removal: Residual trifluoroacetic acid from synthesis can exert cytotoxic effects in delicate cell cultures. Supplier processes should minimize counterion content.
- USA Synthesis and Manufacturing: Domestic manufacturing under standard quality management systems ensures lot-to-lot consistency and traceable supply chain oversight.
PX1 Research provides fully transparent, lot-specific Certificates of Analysis (COAs) for every product line. Investigators can review detailed analytical reports directly within our PX1 research library before placing institutional orders.
To preserve the structural stability of synthetic MOTS-c and prevent aggregation or enzymatic degradation during experimental workflows, laboratories should follow standardized reconstitution and storage guidelines.
Lyophilized Storage: Upon receipt, lyophilized MOTS-c powder should be stored at -20°C or -80°C in a desiccated environment protected from light. Under these conditions, the unconstituted peptide remains stable for extended periods.
Reconstitution Procedures: Allow the vial to equilibrate to room temperature before opening to prevent atmospheric moisture condensation. Reconstitute using sterile, bacteriostatic water or sterile phosphate-buffered saline (PBS, pH 7.4), depending on assay requirements. Gentle agitation or vortexing may be applied; avoid vigorous mechanical shaking to prevent foaming or protein shearing.
Working Aliquots and Freezing: Reconstituted solutions should be divided into single-use working aliquots and immediately stored at -20°C or -80°C. Repeated freeze-thaw cycles must be strictly avoided, as thermal cycling causes physical degradation and precipitation of the peptide sequence.
Detailed solvent compatibility and laboratory handling procedures are available across our target-specific resources, such as our guide to analytical HPLC and mass spectrometry testing methods.
Mitochondrial biology encompasses several distinct peptide families designed to modulate organelle function, energetics, and cellular stress responses. Understanding the operational differences between these compounds allows researchers to select the precise reagent for their specific experimental design.
For instance, while MOTS-c acts primarily as an AMPK-activating nuclear messenger regulating systemic energy balance, SS-31 (Elamipretide) is a small tetrapeptide that selectively targets the inner mitochondrial membrane, binding directly to cardiolipin to optimize electron transport chain efficiency and reduce ROS generation. Meanwhile, Humanin peptide mechanisms center around cytoprotective and anti-apoptotic signaling by interacting with IGFBP-3 and Bax proteins. Integrating these distinct peptides allows laboratories to study targeted organelle repair alongside systemic nuclear transcription regulation.
For broader metabolic axis research, investigators often combine mitochondrial peptide models with compounds evaluating cellular NAD+ homeostasis and energy substrate availability, such as those detailed in our review of NAD+ precursor studies.
PX1 Research simplifies institutional ordering for academic universities, contract research organizations (CROs), and private biotechnology facilities. We maintain domestic inventory ready for immediate fulfillment, with same-day shipping on orders placed Monday through Friday from our California and Arizona fulfillment centers.
Facilities requiring bulk quantities for high-throughput screening or multi-phase animal studies can establish dedicated supply pipelines through our institutional wholesale accounts portal. Institutional purchase orders, tier-volume discounts, and custom lot reservation services are structured to support long-term laboratory budget constraints without compromising reagent quality.
What is the standard purity level for a MOTS-c purchase at PX1 Research?
PX1 Research supplies MOTS-c at a verified purity of ≥98% as determined by Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC). Lot-specific COAs documenting HPLC purity and mass spectrometry identity are provided with every order.
How should reconstituted MOTS-c be stored in the laboratory?
Once reconstituted with sterile bacteriostatic water or PBS, MOTS-c should be divided into single-use working aliquots and stored at -20°C or -80°C. Avoid repeated freeze-thaw cycles to prevent peptide degradation.
What are the primary molecular targets studied with MOTS-c?
In preclinical literature, MOTS-c is primarily investigated for its role in activating AMP-activated protein kinase (AMPK), modulating AICAR synthesis, regulating nuclear gene expression via Nrf2/HSF1 pathways, and driving skeletal muscle glucose clearance.
Is PX1 Research MOTS-c suitable for in vivo rodent research?
Yes. PX1 Research MOTS-c is manufactured for in vitro and preclinical in vivo laboratory research. Our peptides undergo endotoxin testing (<0.1 EU/mg) to ensure suitability for animal model administration.
Are PX1 Research peptides manufactured in the USA?
Yes. All PX1 Research peptides are manufactured in USA-based, GMP-compliant facilities and undergo independent ISO 17025 accredited laboratory testing prior to release.
What is the molecular weight of synthetic MOTS-c?
Synthetic MOTS-c (C101H152N28O22S2) has a theoretical molecular weight of approximately 2174.6 Da, which is confirmed per lot via Electrospray Ionization Mass Spectrometry (ESI-MS).
How does MOTS-c differ from SS-31 in mitochondrial research?
MOTS-c functions as a nuclear-translocating signaling peptide that activates AMPK and metabolic gene expression. In contrast, SS-31 targets inner mitochondrial cardiolipin directly to stabilize cristae structure and reduce electron leakage.
Can laboratories obtain bulk volume pricing for MOTS-c?
Yes. Academic institutions, CROs, and industrial laboratories can request bulk quotes and setup institutional supply agreements through the PX1 Research wholesale portal.
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.