ENTRY       EC 3.6.1.22
NAME        NAD+ pyrophosphatase
CLASS       Hydrolases
            Acting on acid anhydrides
            In phosphorus-containing anhydrides
SYSNAME     NAD+ phosphohydrolase
REACTION    NAD+ + H2O = AMP + NMN
SUBSTRATE   NAD+
            H2O
            NADP+
PRODUCT     AMP
            NMN
            AMP 2'-phosphate
COMMENT     Also acts on NADP+, 3-acetylpyridine and the thionicotinamide
            analogues of NAD+ and NADP+.
PATHWAY     PATH: MAP00760  Nicotinate and nicotinamide metabolism
DBLINKS     University of Geneva ENZYME DATA BANK: 3.6.1.22
            WIT (What Is There) Metabolic Reconstruction: 3.6.1.22
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