ID 2.4.2.12 DE nicotinamide phosphoribosyltransferase. AN NMN diphosphorylase. AN NMN pyrophosphorylase. CA beta-nicotinamide D-ribonucleotide + diphosphate = 5-phospho-alpha-D- CA ribose 1-diphosphate + H(+) + nicotinamide. DR Q6FDK2, NAMPT_ACIAD; P43490, NAMPT_HUMAN; Q99KQ4, NAMPT_MOUSE; DR P47283, NAMPT_MYCGE; P75067, NAMPT_MYCPN; Q52I78, NAMPT_PIG ; DR Q80Z29, NAMPT_RAT ; //