Compound as reactive (1)
β-D-ribosylnicotinate + ATP → 2 H+ + β-nicotinate D-ribonucleotide + ADP
Compound as product (2)
nicotinate + D-ribulose 1-phosphate + H+ → β-D-ribosylnicotinate + phosphate
H2O + β-nicotinate D-ribonucleotide → β-D-ribosylnicotinate + phosphate
Reversible reaction (1)
phosphate + β-D-ribosylnicotinate ↔ α-D-ribose-1-phosphate + H+ + nicotinate