Nicotinate phosphoribosyltransferase (EC:2.4.2.11) is the rate limiting enzyme that catalyses the first reaction in the NAD salvage synthesis. This family also includes Pre-B cell enhancing factor that is a cytokine Swiss:P43490. This family is related to Quinolinate phosphoribosyltransferase Pfam:PF01729.

1: Salvage pathway for NAD biosynthesis in Brevibacterium ammoniagenes: regulatory properties of triphosphate-dependent nicotinate phosphoribosyltransferase. Dulyaninova NG, Podlepa EM, Toulokhonova1 LV, Bykhovsky VY; Biochim Biophys Acta 2000;1478:211-220. PMID:10825532