NADPH—See Nicotinamide adenine

NAD" — see Nicotinamide adenine dinucleotide NADP" — see Nicotinamide adenine dinucleotide phosphate NADPH... 

Fig. 8. Simplified free energy diagram of the photosynthetic electron transport chain (for details see Ref.27, 69X For the sake of simplicity only the reduced forms of the corresponding redox carriers are given. The electronic excitations are symbolized by thick open arrows, thermal redox reactions in the dark are indicated by thin arrows. Abbreviations Cyt fre(j = reduced cytochrome f, NADPH = reduced nicotinamide adenine dinucleotidphosphate, PCjgj = reduced plastocyanine, PQH2 = plastohydroquinone, Xf and X 320- are the reduced forms of the primary electron acceptor of C[ and Qj, respectively [see Eq. (14a, b)l, Y = watersplitting enzyme system...

NAD, NADH l Refer to the oxidised and reduced forms of the NADP, NADPH j nicotinamide-adenine dinucleotide cofactors of certain enzymes (see Figures 2a, b). 

See also NAD+, NADH NADP+, NADPH daily requirements 756, 769 Nicotinamide adenine dinucleotide. See NAD+, NADH... 

The vast majority of alcohol dehydrogenases require nicotanimide cofactors, such as nicotinamide adenine dinucleotide (NADH) and its respective phosphate NADPH. The structure of NAD/NADP is shown in Fig. 3.39. Hydrogen and two electrons are transferred from the reduced nicotinamide to the carbonyl group to effect a reduction of the substrate (see Fig. 3.39). 

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