Nicotinic acid mononucleotide adenylyltransferase%3B catalyzes the transfer of the adenylyl moiety of ATP to nicotinamide mononucleotide to form NAD%3B involved in pathways of NAD biosynthesis%2C including the de novo%2C NAD(+) salvage%2C and nicotinamide riboside salvage pathways%3B homolog of human NMNAT%3B NMA1 has a paralog%2C NMA2%2C that arose from the whole genome duplication
