Quinolinate phosphoribosyl transferase, C-terminal (IPR002638)

Short name: Quinolinate_PRibosylTrfase_C

Overlapping homologous superfamilies

Domain relationships



Quinolinate phosphoribosyl transferase (QPRTase) or nicotinate-nucleotide pyrophosphorylase EC: is involved in the de novo synthesis of NAD in both prokaryotes and eukaryotes. It catalyses the reaction of quinolinic acid with 5-phosphoribosyl-1-pyrophosphate (PRPP) in the presence of Mg2+ to give rise to nicotinic acid mononucleotide (NaMN), pyrophosphate and carbon dioxide [PMID: 9016724, PMID: 8561507]. Unlike IPR004393, this domain also includes the molybdenum transport system protein ModD.

GO terms

Biological Process

GO:0009435 NAD biosynthetic process

Molecular Function

GO:0004514 nicotinate-nucleotide diphosphorylase (carboxylating) activity

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.