Description_x000D_ Application_x000D_ β-Nicotinamide adenine dinucleotide (β-NAD) has been used for the preparation of deacetylated tubulin. It has also been used for UDP-glucose-6-hydrogenase (UGDH) enzyme activity assay of orital fibroblast cell lysates._x000D_ Biochem/physiol Actions_x000D_ β-Nicotinamide adenine dinucleotide (NAD+) and β-Nicotinamide adenine dinucleotide, reduced (NADH) comprise a coenzyme redox pair (NAD+:NADH) involved in a wide range of enzyme catalyzed oxidation reduction reactions. In addition to its redox function, NAD+/NADH is a donor of ADP-ribose units in ADP-ribosylaton (ADP-ribosyltransferases; poly(ADP-ribose) polymerases ) reactions and a precursor of cyclic ADP-ribose (ADP-ribosyl cyclases)._x000D_ β-Nicotinamide adenine dinucleotide (β-NAD) is a neuromodulator and an inhibitory neurotransmitter. It is an agonist for purinergic (P2Y1) receptors._x000D_ Electron acceptor_x000D_ Other Notes_x000D_ Packaged based on NAD content as determined by UV-Vis._x000D_ This is the common form of NAD.