Catalyzes the formation of NAD(+) from nicotinamide mononucleotide (NMN) and ATP. Can also use the deamidated form; nicotinic acid mononucleotide (NaMN) as substrate. ATP + beta-nicotinamide D-ribonucleotide + H(+) = diphosphate + NAD(+) ATP + H(+) + nicotinate beta-D-ribonucleotide = deamido-NAD(+) + diphosphate Cofactor biosynthesis; NAD(+) biosynthesis; deamido-NAD(+) from nicotinate D-ribonucleotide: step 1/1. Cofactor biosynthesis; NAD(+) biosynthesis; NAD(+) from nicotinamide D-ribonucleotide: step 1/1. Belongs to the eukaryotic NMN adenylyltransferase family. Extended N-terminus. Extended N-terminus.