Tags: Enzyme.
In enzymology a nicotinamide-nucleotide adenylyltransferase (EC 2.7.7.1) is an enzyme that catalyzes the chemical reactionATP + nicotinamide ribonucleotide diphosphate + NAD+Thus the two substrates of this enzyme are ATP and nicotinamide ribonucleotide whereas its two products are diphosphate and NAD+.This enzyme belongs to the family of transferases specifically those transferring phosphorus-containing nucleotide groups (nucleotidyltransferases).