catalytic activity:Nicotinate D-ribonucleotide + diphosphate = nicotinate + 5-phospho-alpha-D-ribose 1-diphosphate.,function:Catalyzes the conversion of nicotinic acid (NA) to NA mononucleotide (NaMN). Essential for NA to increase cellular NAD levels and prevent oxidative stress of the cells.,pathway:Cofactor biosynthesis; NAD(+) biosynthesis; nicotinate ribonucleotide from nicotinate: step 1/1.,similarity:Belongs to the NAPRTase family.,
Cytoplasm, cytosol .
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