NAD+

NAD⁺ (Nicotinamide Adenine Dinucleotide) Phosphate Buffered Solution

NAD⁺ (Nicotinamide Adenine Dinucleotide) Phosphate Buffered Solution is a stabilized aqueous reagent containing NAD⁺. By utilizing a phosphate-buffered system, this formulation maintains an optimal pH environment, which preserves the structural integrity and stability of the dinucleotide molecule during laboratory manipulation. As a fundamental redox coenzyme, this solution is an essential reagent for investigators exploring cellular bioenergetics, mitochondrial metabolic flux, and the activity of NAD⁺-dependent signaling enzymes in controlled in vitro environments.

Technical Specifications

Mechanism of Action & Research Context

NAD⁺ serves as a central electron carrier in cellular respiration, facilitating the fundamental transfer of electrons in oxidative phosphorylation and metabolic pathways.

• Redox Cycling: It functions as a reversible coenzyme, oscillating between the oxidized state (NAD⁺) and the reduced state (NADH). This cycle is the foundation of energy metabolism in both the mitochondria and the cytosol.

• Enzymatic Cofactor Activity: Beyond respiration, NAD⁺ is a mandatory co-substrate for key regulatory enzymes, including Sirtuins (SIRTs)—which govern longevity and metabolic adaptation—and Poly(ADP-ribose) polymerases (PARPs), which are critical for DNA repair and cellular stress responses.

• Buffered Stability: The phosphate buffer system prevents pH-induced hydrolysis of the diphosphate bridge, ensuring that the concentration remains consistent throughout complex experimental protocols.

Research Applications

This solution is utilized as a specialized benchmark for high-fidelity studies in cellular biology and biochemistry.

Primary fields of in vitro laboratory investigation include:

• Mitochondrial Bioenergetics: Assessing oxidative phosphorylation rates and mitochondrial respiration flux in response to varying NAD⁺ concentrations.

• Sirtuin and PARP Signaling: Studying the activation kinetics of NAD⁺-dependent deacetylases and DNA repair enzymes.

• Metabolic Stress Models: Investigating the depletion and replenishment of NAD⁺ pools under induced oxidative or genotoxic stress conditions.

• Enzyme Kinetics: Utilizing the reagent to map the catalytic activity of NAD⁺-dependent dehydrogenases.

Storage & Handling Guidelines

To maintain the chemical stability and experimental viability of the solution:

• Storage Environment: Keep refrigerated (typically 2–8 °C) to ensure long-term stability of the NAD⁺ molecule.

• Light Protection: NAD⁺ is sensitive to photolytic degradation; store in a dark environment or light-resistant containers.

• Aseptic Technique: Due to the aqueous nature of the formulation, utilize strict aseptic techniques to prevent microbial contamination.

• Vial Integrity: Ensure the container is tightly sealed after each use to minimize evaporation and atmospheric exposure.

References

• Verdin E. (2015) NAD+ in aging, metabolism, and neurodegeneration. Science. 350(6265):1208–1213.

• Imai SI, Guarente L. (2014) NAD+ and sirtuins in aging and disease. Trends in Cell Biology. 24(8):464–471.

• Katsyuba E, Auwerx J. (2017) Modulating NAD+ metabolism as a therapeutic strategy for disease. The EMBO Journal. 36(24):3591–3605.

Research Use Disclaimer

Research Use Only Disclaimer: This product is developed and distributed strictly as a Research Use Only (RUO) laboratory reference chemical intended exclusively for non-clinical analytical and scientific investigation. It is not an FDA-approved drug, medical treatment, dietary supplement, or food ingredient, and is strictly prohibited for human or animal consumption. Kimera Chems supplies this high-purity research material solely to qualified institutions and professional investigators for authorized laboratory research.