Nicotinate and nicotinamide metabolism

Inosine-uridine preferring nucleoside hydrolase (EC 3.2.2.1)

Purine nucleoside phosphorylase (EC 2.4.2.1)

NADH pyrophosphatase (EC 3.6.1.22)

Soluble pyridine nucleotide transhydrogenase (EC 1.6.1.1)

NAD synthetase (EC 6.3.1.5) / Glutamine amidotransferase chain of NAD synthetase

Nicotinate-nucleotide adenylyltransferase (EC 2.7.7.18)

Nicotinamidase (EC 3.5.1.19)

NAD kinase (EC 2.7.1.23)

Quinolinate phosphoribosyltransferase [decarboxylating] (EC 2.4.2.19)

L-aspartate oxidase (EC 1.4.3.16)