Nicotinamide adenine dinucleotide

Topic

Nicotinamide adenine dinucleotide (NAD) is a coenzyme central to metabolism that is found in all living cells. It consists of two nucleotides joined through their phosphate groups, with one containing an adenine nucleobase and the other nicotinamide. NAD exists in an oxidized form (NAD+) and a reduced form (NADH), playing a crucial role in electron transfer during cellular respiration.