Nicotinamide mononucleotide

Nicotinamide structure

Nicotinamide mononucleotide (NMN) is a nucleotide derived from ribose and nicotinamide. It is a key compound in the biosynthesis of nicotinamide adenine dinucleotide (NAD+), which is an essential molecule in all living cells.

Biosynthesis

NMN is produced in the body from B vitamins found in food. The biosynthesis of NMN is a two-step process. First, the B vitamin niacin (also known as nicotinamide) is converted into NMN by an enzyme called nicotinamide phosphoribosyltransferase (NAMPT). Then, NMN is converted into NAD+ by an enzyme called nicotinamide mononucleotide adenylyltransferase (NMNAT).

Role in Cellular Metabolism

NMN plays a crucial role in the production of NAD+, a coenzyme that is involved in many cellular processes, including energy metabolism, DNA repair, and cell aging. NAD+ is also a substrate for several enzymes, including sirtuins, which are believed to play a role in longevity.

Potential Health Benefits

Research has suggested that NMN may have several health benefits, largely due to its role in producing NAD+ and activating sirtuins. These potential benefits include improved energy metabolism, enhanced DNA repair, and slowed cell aging. However, more research is needed to confirm these effects and understand their implications for human health.

Supplementation

NMN is available as a dietary supplement. Some research suggests that NMN supplementation can increase NAD+ levels in the body, potentially offering the health benefits associated with this molecule. However, the safety and efficacy of NMN supplementation are not fully understood, and more research is needed in this area.

See Also

• Nicotinamide adenine dinucleotide
• Nucleotide
• Sirtuins
• Cell aging

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