The cofactor is found in two forms in cells: NAD+ is an oxidizing agent - it accepts electrons from other molecules and becomes reduced. This reaction forms NADH, which can then be used as a reducing agent to donate electrons. These electron transfer reactions are the main function of NAD.
In metabolism, nicotinamide adenine dinucleotide is involved in redox reactions, carrying electrons from one reaction to another. The cofactor is, therefore, found in two forms in cells: NAD+ is an oxidizing agent - it accepts electrons from other molecules and becomes reduced.
What is NAD+ and Why Is it Important for Aging and Health? You can't live without the coenzyme NAD+, nicotinamide adenine dinucleotide. ... NAD+, or nicotinamide adenine dinucleotide, is a coenzyme found in all living cells, and it's required for the fundamental biological processes that make life possible. See Sinclair's Research, https://hms.harvard.edu/news/rewinding-clock