NAD+ vs SS-31: Mitochondrial Research Comparison
Comparing a cellular coenzyme with a mitochondria-targeted peptide. Understanding distinct mechanisms for energy metabolism and oxidative stress research.
Quick Comparison
What Is NAD+?
NAD+ (Nicotinamide Adenine Dinucleotide) is a coenzyme found in all living cells. It consists of two nucleotides joined through their phosphate groups: one containing an adenine base and the other containing nicotinamide. NAD+ exists in oxidized (NAD+) and reduced (NADH) forms, shuttling electrons in metabolic reactions.
NAD+ research applications span multiple areas:
- Sirtuin activation and deacetylase activity studies
- Cellular redox state investigations
- Mitochondrial electron transport research
- PARP enzyme function studies
- Circadian rhythm and metabolic regulation
For researchers studying cellular metabolism and aging pathways, NAD+ serves as both a substrate and a signaling molecule, making it a versatile research tool for understanding fundamental cellular processes.
What Is SS-31 (Elamipretide)?
SS-31 (also known as Elamipretide or MTP-131) is a synthetic tetrapeptide with the sequence D-Arg-Dmt-Lys-Phe-NH2. The “SS” designation refers to the Szeto-Schiller peptide series designed to target the inner mitochondrial membrane. The alternating cationic and aromatic residues enable selective accumulation in mitochondria.
SS-31 research focuses on:
- Cardiolipin-cytochrome c interaction studies
- Mitochondrial cristae structure research
- Electron transport chain optimization
- Reactive oxygen species (ROS) modulation
- ATP production efficiency studies
SS-31’s specific targeting of the inner mitochondrial membrane makes it a valuable tool for researchers investigating mitochondrial dysfunction without affecting cytoplasmic processes.
Why Documentation & Testing Matter
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Frequently Asked Questions
What is the fundamental difference between NAD+ and SS-31?
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme involved in cellular redox reactions and sirtuin activation. SS-31 (Elamipretide) is a synthetic tetrapeptide that specifically targets the inner mitochondrial membrane. While both relate to cellular energy, they act through entirely different mechanisms.
How do their mitochondrial interactions differ?
NAD+ participates in mitochondrial electron transport as a coenzyme and activates mitochondrial sirtuins. SS-31 directly binds to cardiolipin in the inner mitochondrial membrane, stabilizing cristae structure and optimizing electron transport chain function.
Which compound is more specific to mitochondria?
SS-31 is highly mitochondria-specific due to its cationic structure that targets the negatively charged inner membrane. NAD+ functions throughout the cell, though a significant portion of cellular NAD+ is located in mitochondria.
What are the storage requirements for each compound?
NAD+ requires protection from light and moisture, stored at -20°C. SS-31 follows standard peptide storage protocols with lyophilized storage at -20°C and reconstituted storage at 2-8°C. Both should be protected from repeated freeze-thaw cycles.
Are these compounds available for research in Canada?
Both NAD+ and SS-31 are available as research compounds from qualified Canadian suppliers. They are labeled for research use only with appropriate documentation for laboratory applications.
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Research Products Referenced
View the research-grade peptides discussed in this comparison, each with batch-specific COA verification:
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