Nad is also called
Nicotinamide Adenine Dinucleotide. (NAD; also called diphosphopyridine nucleotide, or DPN; obsolete terms, cozymase, coenzyme I, and codehydrogenase I), a coenzyme present in all living cells. NAD is a member of a group of enzymes—the dehydrogenases—that catalyze oxidation-reduction reactions. Nicotinamide is made from vitamin B3, also called niacin, in your body. You can get nicotinamide by eating niacin-rich foods such as poultry, beef, fish and fortified cereal, or by taking a niacin or nicotinamide supplement. Nicotinamide plays an essential role in energy production and nutrient synthesis. Your body uses nicotinamide to form two important coenzymes called nicotinamide adenine dinucleotide, or NAD, and nicotinamide adenine dinucleotide phosphate, or NADP. Your body needs NAD and NADP for many essential reactions including energy production, DNA repair, regulation of cell differentiation and cell death. Nicotinamide Adenine Dinucleotide. (NAD; also called diphosphopyridine nucleotide, or DPN; obsolete terms, cozymase, coenzyme I, and codehydrogenase I), a coenzyme present in all living cells. It is also known as NAD, diphosphopyridine nucleotide (DPN) coenzyme I, and codehydrogenase I. NAD is found in the tissues of all living organisms. See Coenzyme. The nicotinamide, or pyridine, portion of NAD can be reduced chemically or enzymatically with the formation of reduced or hydrogenated NAD (NADH). 1 Once the Obama administration took office, the NAD advocated for provisions in the American Recovery and Reinvestment Act (also called the Economic Stimulus Bill) to ensure quality education for deaf and hard of hearing children, vocational rehabilitation services, full employment, and accessible broadband technology. Photo Credit Jupiterimages/Comstock/Getty Images. Nicotinamide is made from vitamin B3, also called niacin, in your body. You can get nicotinamide by eating niacin-rich foods such as poultry, beef, fish and fortified cereal, or by taking a niacin or nicotinamide supplement. Hence, they serve as catalysts and NAD is referred to as a coenzyme. In some enzymatic reactions a different coenzyme, triphosphopyridine nucleotide is required. Dehydrogenases are generally quite specific with respect to the coenzyme which they can utilize. See Enzyme, Nicotinamide adenine dinucleotide phosphate (NADP). Nicotinamide adenine dinucleotide (NAD). An organic coenzyme and one of the most important components of the enzymatic systems concerned with biological oxidation-reduction reactions. 1 c. 2  Like an enzyme, the coenzyme NAD + is used over and over again; only a small amount is therefore present in a cell. 3  d. 4  After NAD + accepts electrons and is reduced to NADH, NADH passes the electrons to another carrier and becomes oxidized to NAD + again.
Diphosphopyridine nucleotide or DPN.