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Purine-
nucleoside
phosphorylase
5'-nucleotidase
Nicotinamide-
nucleotide
adenylyltransferase
NAD kinase
Probable
glutamine-
dependent
NAD(+)
synthetase
Nicotinamide-
nucleotide
adenylyltransferase
5'-nucleotidase
Purine-
nucleoside
phosphorylase
Nicotinate
phosphoribosyltransferase
NADP
Nicotinic acid
Nicotinamide
riboside
H
2
O
D-Ribose
Niacinamide
Nicotinamide
ribotide
H
2
O
P
i
NAD
H
2
O
AMP
ATP
ADP
Nicotinic acid
adenine
dinucleotide
ATP
H
2
O
L-Glutamine
AMP
PP
i
L-Glutamic acid
ATP
nicotinate β-D-
ribonucleotide
PP
i
H
2
O
Nicotinate D-
ribonucleoside
P
i
P
i
Ribose
1-phosphate
H
+
PP
i
ADP
P
i
Phosphoribosyl
pyrophosphate
ATP
H
2
O
H
+
Mitochondrial
Electron
Transport Chain
Dietary sources
Nucleus
Cytosol
Nucleus
CG16760
Dmel\CG11883
Nmnat
CG33156
CG9940
Nmnat
Dmel\CG11883
CG16760
Naprt
NADP
Nicotinic acid
Nicotinamide
riboside
Water
D-Ribose
Niacinamide
Nicotinamide
ribotide
Water
Phosphate
NAD
Water
Adenosine
monophosphate
Adenosine
triphosphate
Adenosine
diphosphate
Nicotinic acid
adenine
dinucleotide
Adenosine
triphosphate
Water
L-Glutamine
Adenosine
monophosphate
Pyrophosphate
L-Glutamic acid
Adenosine
triphosphate
nicotinate β-D-
ribonucleotide
Pyrophosphate
Water
Nicotinate D-
ribonucleoside
Phosphate
Phosphate
Ribose
1-phosphate
Hydrogen Ion
Pyrophosphate
Adenosine
diphosphate
Phosphate
Phosphoribosyl
pyrophosphate
Adenosine
triphosphate
Water
Hydrogen Ion
Mitochondrial
Electron
Transport Chain
Dietary sources