<prompt> NAD acts as a cofactor for all exceptIsocitrate dehydrogenaseAlpha ketoglutarate dehydrogenaseMalate dehydrogenaseSuccinyl thiokinase  <response>: Niacin Vitamin B3 in biologically active form of NAD nicotinamide adenine dinucleotide and NADP nicotinamide, adenine dinucleotide phosphate act as cofactor for various enzymes such asNADP CofactorGlucose-6-phosphate dehydrogenase G-6-PD glucose-6-PO4 to 6-phosphogluconateGlutathione reductaseEither NADP or NAD CofactorGlutamate dehydrogenase glutamate α-ketoglutarate NH3Isocitrate dehydrogenase isocitrate oxalosuccinate NAD CofactorMalate dehydrogenase malate oxaloacetateAlcohol dehydrogenase ethanol acetaldehydeLactate dehydrogenase pyruvic acid lactic acidGlyceraldehyde-3-phosphate dehydrogenase glyceraldehyde 3P 1, 3 diphosphoglycerateα - Glycero-P-dehydrogenaseα -Ketoglutarate dehydrogenase α ketoglutarate CoAPyruvate dehydrogenase complex PDC pyruvate CoA 