A hydrogen carrier in cellular respiration.
Diphosphopyridine nucleotide (DPN). Attached as a prosthetic group to a protein serves as a respiratory enzyme, part of an oxidative-reduction system, converting substrates to carbon dioxide (CO2) and water (H20) and the transfer of electrons removed to oxygen (02).
An enzyme that is important in accepting electrons in the course of metabolic reactions. In its oxidized form, NAD+ gives up its electron and is converted to the reduced form, NADH.
NAD, an abbreviation for nicotinamide adenine dinucleotide, represents a coenzyme derived from nicotinic acid. Coenzymes are organic compounds crucial for reactions catalyzed by enzymes. NAD serves as a hydrogen acceptor, forming NADH, in the chemical pathway responsible for generating cellular energy.