2.4.2.21 nicotinate-nucleotide---dimethylbenzimidazole phosphoribosyltransferase; nicotinate mononucleotide-dimethylbenzimidazole phosphoribosyltransferase; nicotinate ribonucleotide:benzimidazole (adenine) phosphoribosyltransferase; nicotinate-nucleotide:di • • •