MW: ~27.0 kDa (monomer). Human full-length NMNAT3 (aa 1-252) is fused at the N-terminus to a His-tag. Purity ≥95%. Background: This is the Mitochondrial NMNAT isoform. It catalyzes the formation of NAD+ from nicotinamide mononucleotide (NMN) and ATP. It can also use the deamidated form of nicotinic acid mononucleotide (NAMN) as substrate with the same efficiency. It can use tiazofurin monophosphate as substrate. It can also use GTP and ITP as nucleotide donors. Also catalyzes the reverse reac