ENTRY       EC 2.7.7.1
NAME        Nicotinamide-nucleotide adenylyltransferase
            NAD+ pyrophosphorylase
CLASS       Transferases
            Transferring phosphorus-containing groups
            Nucleotidyltransferases
SYSNAME     ATP:nicotinamide-nucleotide adenylyltransferase
REACTION    ATP + Nicotinamide D-ribonucleotide = Pyrophosphate + NAD+
SUBSTRATE   ATP
            Nicotinamide D-ribonucleotide
            Nicotinate D-ribonucleotide
PRODUCT     Pyrophosphate
            NAD+
COMMENT     Nicotinate nucleotide can also act as acceptor. See also
            EC 2.7.7.18.
PATHWAY     PATH: MAP00760  Nicotinate and nicotinamide metabolism
DBLINKS     University of Geneva ENZYME DATA BANK: 2.7.7.1
            WIT (What Is There) Metabolic Reconstruction: 2.7.7.1
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