2. Biology Dictionary
  3. Nicotinamide adenine dinucleotide (NAD)

Nicotinamide adenine dinucleotide (NAD)

Definition:

Nicotinamide adenine dinucleotide (NAD) is an abundant cofactor. NAD acts as a cosubstrate for several enzymes, such as sirtuins, PARPs and some ectoenzymes like CD38. NAD regulates critical biological processes like gene expression, DNA repair, calcium signalling and circadian rhythms.

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