Description
MOTS-C (12S rRNA-C mitochondrial open reading frame) is a short peptide (mitochondrial-derived peptide, MDP) encoded by the mitochondrial genome, composed of 16 amino acids. Since its scientific recognition in 2015, MOTS-C has gradually become a research hotspot in the fields of metabolism, aging, and bioenergetics. As a mitochondrial peptide possessing both signaling molecule properties and metabolic regulatory capabilities, MOTS-C shows great potential in improving insulin sensitivity, enhancing energy metabolism, and exerting antioxidant and anti-aging effects. As a raw material-grade peptide product, high-quality MOTS-C powder needs to possess high purity and stability, good color, well-defined physicochemical properties, and reliability to meet the needs of scientific research or preclinical experiments.
I. Basic Information and Structural Characteristics of MOTS-C
MOTS-C originates from the open reading frame of mitochondrial 12S rRNA, and its amino acid sequence is typically: MRWQEMGYIFYPRKLR
This peptide chain is relatively short, but its structure contains multiple charged amino acid residues (such as lysine and arginine), giving it strong hydrophilicity. It also contains aromatic amino acids, such as tyrosine and phenylalanine, which contribute to its stability.
Key characteristics include:
Encoded by the mitochondrial genome, not nuclear genes.
Possesses hormone-like biological signaling functions, enabling inter-tissue information transmission.
Have profound regulatory effects on metabolic pathways.
Belongs to an endogenous peptide, exhibiting good compatibility and safety.
II. Physicochemical Properties (including color, solubility, stability, etc.)
1. Appearance and Color
High-quality MOTS-C raw materials typically have the following characteristics:
White to off-white lyophilized powder.
The powder is loose and uniform, free of visible impurities.
High-purity products have virtually no odor or taste.
If a noticeable yellow hue or uneven color appears, it is usually related to residual solvents or oxidation and does not fall into the category of high-quality products.
2. Molecular Properties
The molecular weight is approximately 2172.4 Da.
It belongs to the small molecule polypeptide class and has a compact structure.
Its isoelectric point is slightly neutral to weakly positive.
Due to the presence of basic amino acids, it readily forms stable hydrogen bonds with water.
3. Solubility
High-quality MOTS-C typically has the following characteristics:
Extremely soluble in water.
Rapidly soluble in sterile water for injection, PBS, and weakly acidic buffer solutions.
Poorly soluble in organic solvents such as ethanol and ether.
This solubility is beneficial for preparing research solutions and conducting cell experiments.
4. Stability
Very stable in the lyophilized state.
Can be stored long-term at -20°C in a sealed, light-protected environment.
Poor stability in the solution state; needs to be prepared immediately and used at low temperatures.
Easily oxidized; avoid prolonged exposure to air and high temperatures.
5. Purity Indicators
Research-grade High-Quality MOTS-C:
High-performance liquid chromatography purity ≥98%
Low impurity peaks
Low residual moisture content
No endotoxins detected, or endotoxin content controlled within experimental limits.
III. Advantages and Functions of MOTS-C
1. Regulating Glucose Metabolism and Improving Insulin Sensitivity
Studies have shown that MOTS-C can:
Activate AMPK (a core factor in energy metabolism)
Promote glucose uptake
Enhance cellular responsiveness to insulin
Possibly improve metabolic disorders in hyperglycemic states
This makes it a peptide molecule of particular interest in metabolic research.
2. Enhancing Energy Metabolism and Endurance Performance
Some animal studies have shown that:
MOTS-C promotes fatty acid oxidation
Improves mitochondrial function and energy output
Delays exercise fatigue and enhances endurance
Therefore, it is often considered a metabolic peptide with anti-fatigue potential.
3. Anti-aging and Stress Resilience
MOTS-C has shown several positive effects in aging research:
Under stress conditions, it can enter the cell nucleus and regulate gene expression.
It reduces oxidative damage.
It improves age-related metabolic decline.
It is even considered a "mitochondrial-derived anti-aging molecule."
Therefore, it shows great promise in delaying aging.
4. Anti-inflammatory Effects and Protective Effects on Cellular Function
MOTS-C may help combat metabolic damage caused by chronic inflammation by:
Reducing the release of inflammatory cytokines
Maintaining cellular energy homeostasis
Protecting pancreatic β-cells
5. Potential Adjunctive Effects on Weight Management
Due to improved energy metabolism efficiency, it indirectly produces the following effects:
Reducing fat accumulation
Improving metabolic syndrome
Research is ongoing, but these trends are noteworthy.
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