GO:0047280

nicotinamide phosphoribosyltransferase activity

Details: 
Catalysis of the reaction: diphosphate + nicotinamide mononucleotide = 5-phospho-alpha-D-ribose 1-diphosphate + H(+) + nicotinamide. [EC:2.4.2.12, RHEA:16152]
Evidence Code: