dinucleotide Definition

a nucleotide consisting of two units each composed of a phosphate, a pentose, and a nitrogen base

a coenzyme C27H33N9O15P2 of some flavoproteins

nad

nadp

a coenzyme C21H27N7O14P2 of numerous dehydrogenases that occurs in most cells and plays an important role in all phases of intermediary metabolism as an oxidizing agent or when in the reduced form as a reducing agent for various metabolites —called also nicotinamide adenine dinucleotide, diphosphopyridine nucleotide, DPN

a coenzyme C21H28N7O17P3 of numerous dehydrogenases (such as that acting on glucose-6-phosphate) that occurs especially in red blood cells and plays a role in intermediary metabolism similar to NAD but acting often on different metabolites —called also nicotinamide adenine dinucleotide phosphate, TPN, triphosphopyridine nucleotide