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Nicotinate- nucleotide pyrophosphorylase [carboxylating] Nicotinamide/nicotinic acid mononucleotide adenylyltransferase 1 Nicotinamide/nicotinic acid mononucleotide adenylyltransferase 2 3- hydroxyanthranilate 3,4-dioxygenase Kynureninase Kynurenine 3-monooxygenase Kynurenine formamidase Indoleamine 2,3-dioxygenase Nicotinamide riboside kinase Nicotinamide/nicotinic acid mononucleotide adenylyltransferase 1 Nicotinamide/nicotinic acid mononucleotide adenylyltransferase 2 Nicotinate phosphoribosyltransferase Nicotinamidase Uridine nucleosidase NAD-dependent histone deacetylase SIR2 Nicotinamide riboside kinase Glutamine- dependent NAD(+) synthetase NAD-dependent histone deacetylase SIR2 2-Amino-3- carboxymuconic acid semialdehyde H2O Quinolinic acid H+ Phosphoribosyl pyrophosphate PPi CO2 Nicotinic acid mononucleotide H+ ATP Nicotinic acid adenine dinucleotide PPi 3- Hydroxyanthranilic acid O2 H+ 3-hydroxy-L- kynurenine H2O L-Alanine H+ H+ NADPH O2 L-Kynurenine NADP H2O N'- Formylkynurenine H2O Formic acid H+ L-Tryptophan O2 Nicotinamide riboside ATP Nicotinamide ribotide ADP H+ ATP H+ PPi NAD H2O ATP Phosphoribosyl pyrophosphate Nicotinic acid PPi ADP Pi Niacinamide H2O Ammonium Nicotinamide riboside H2O H+ D-Ribose NAD H2O 3''-O-acetyl- ADP-ribose ATP Nicotinate D- ribonucleoside ADP H+ nicotinate β-D- ribonucleotide ATP H2O L-Glutamine H+ AMP PPi L-Glutamic acid H2O 3''-O-acetyl- ADP-ribose [histone]-N6- acetyl-L- lysine a [histone]-L- lysine [histone]-N6- acetyl-L- lysine a [histone]-L- lysine