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NAD salvage pathway I (PNC VI cycle)

State Icon Reaction EC-Number Confidence maximal confidence score from EnzymeDetector
nicotinamide + H2O <=> NH3 + nicotinate 3.5.1.13 aryl-acylamidase
3.5.1.19 nicotinamidase
3.5.1.4 amidase



nicotinic_acid_mononucleotide + ATP + H+ <=> deamido-NAD+ + diphosphate 2.7.7.1 nicotinamide-nucleotide adenylyltransferase
2.7.7.18 nicotinate-nucleotide adenylyltransferase


nicotinate + 5-phospho-alpha-D-ribose_1-diphosphate + ATP + H2O <=> nicotinic_acid_mononucleotide + diphosphate + ADP + phosphate 6.3.4.21 nicotinate phosphoribosyltransferase

NMN + H2O <=> D-ribose_5-phosphate + nicotinamide + H+ 3.2.2.14 NMN nucleosidase
3.2.2.6 ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase


NAD+ + H2O <=> AMP + NMN + H+ 2.7.7.1 nicotinamide-nucleotide adenylyltransferase
3.1.13.3 oligonucleotidase
3.1.4.1 phosphodiesterase I
3.6.1.13 ADP-ribose diphosphatase
3.6.1.18 FAD diphosphatase
3.6.1.21 ADP-sugar diphosphatase
3.6.1.22 NAD+ diphosphatase
3.6.1.45 UDP-sugar diphosphatase
3.6.1.9 nucleotide diphosphatase









NH3 + ATP + deamido-NAD+ <=> H+ + AMP + diphosphate + NAD+ 6.3.1.5 NAD+ synthase
6.3.5.1 NAD+ synthase (glutamine-hydrolysing)


ATP + deamido-NAD+ + L-glutamine + H2O <=> H+ + L-glutamate + AMP + diphosphate + NAD+ 6.3.1.5 NAD+ synthase
6.3.5.1 NAD+ synthase (glutamine-hydrolysing)


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