1Biochemistry 
Nicotinamide adenine dinucleotide, a coenzyme important in many biological oxidation reactions.
 Example sentencesExamples
-  In this study we have focused on the regeneration of the reduced form of nicotinamide adenine dinucleotide in the cell due to its key role in cellular metabolism.
 -  There are several metabolic pathways for biosynthesis of nicotinamide adenine dinucleotide (NAD +) in bacteria.
 -  These include things like thiamine pyrophosphate, pyridoxal phosphate and nicotinamide adenine dinucleotide.
 -  The NAM nucleotide coenzymes nicotinamide adenine dinucleotide and nicotinamide adenine dinucleotide-phosphate are involved in hundreds of metabolic reactions.
 -  This forms two ATPs, and two molecules of nicotinamide adenine dinucleotide, a carrier of high-energy hydrogens used in catabolic reactions.