Tags: Enzyme.
In enzymology a nicotinate-nucleotide diphosphorylase (carboxylating) (EC 2.4.2.19) is an enzyme that catalyzes the chemical reactionnicotinate D-ribonucleotide + diphosphate + CO2 pyridine-23-dicarboxylate + 5-phospho-alpha-D-ribose 1-diphosphateThe 3 substrates of this enzyme are nicotinate D-ribonucleotide diphosphate and CO2 whereas its two products are pyridine-23-dicarboxylate and 5-phospho-alpha-D-ribose 1-diphosphate.This enzyme belongs to the family of glycosyltransferases specifically the pentosyltransferases.