Nicotinate-nucleotide adenylyltransferase

Template:Infobox enzyme In enzymology, a nicotinate-nucleotide adenylyltransferase (Template:EC number) is an enzyme that catalyzes the chemical reaction

ATP + nicotinate ribonucleotide $\rightleftharpoons$ diphosphate + deamido-NAD⁺

Thus, the two substrates of this enzyme are ATP and nicotinate ribonucleotide, whereas its two products are diphosphate and deamido-NAD+.

This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing nucleotide groups (nucleotidyltransferases). The systematic name of this enzyme class is ATP:nicotinate-ribonucleotide adenylyltransferase. Other names in common use include deamido-NAD+ pyrophosphorylase, nicotinate mononucleotide adenylyltransferase, deamidonicotinamide adenine dinucleotide pyrophosphorylase, NaMN-ATase, and nicotinic acid mononucleotide adenylyltransferase. This enzyme participates in nicotinate and nicotinamide metabolism.

Structural studies

As of late 2007, 9 structures have been solved for this class of enzymes, with PDB accession codes Template:PDB link, Template:PDB link, Template:PDB link, Template:PDB link, Template:PDB link, Template:PDB link, Template:PDB link, Template:PDB link, and Template:PDB link.

References

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