nad nicotinamide synthesis biosynthesis adenine dinucleotide enzymes consuming
nad metabolism intracellular eukaryotic synthesised pathway nadp synthesis nadh
nad nicotinamide adenine dinucleotide pathway biosynthetic consuming nampt consumption ribose nmn enzymatic precursor adp producing consume sirtuins substrate cd73 synthesize
nad metabolites metabolism parp nampt mammalian enzymes nicotinamide cells openi polymerase adp ribose poly
nad mitochondrial nadh maintenance nmn occurs either pathway nampt salvage nam
nad biosynthesis nicotinamide nicotinic riboside initiates humans adenine naad mononucleotide dinucleotide namn nmn nar prpp
nadph mitochondrial metabolic cytosolic nadp shuttle cytosol g6pd mitochondria pathway phosphate glucose malate pentose idh2 dehydrogenase ribose glud isocitrate nicotinamide