∞ generated and posted on 2016.01.24 ∞
Important electron acceptor used in glycolysis and which, in its reduced form, is fed into electron transport chains.
|'NAD' stands for nicotinamide adenine dinucleotide and 'NAD+' contrasts with 'NADH'|
NAD+ is the oxidized form of nicotinamide adenine dinucleotide, a nucleic-acid derivative. The reduced form, that is, as is seen once electrons have been accepted, is NADH.
Note that the overall reaction is NAD+ + 2e- + 2H+ → NADH + H+, where "H+" is another name for "proton" or "hydrogen ion".
A similar molecule exists that is called NADP+ (and equivalent NADPH) which accepts electrons that are to be used as "reducing power" in anabolic reactions.