Inosine 5'-phosphate dehydrogenase 2 is an alias for the gene, IMP (inosine 5'-monophosphate) dehydrogenase 2, in humans. Other names include: Inosine-5'-monophosphate dehydrogenase 2; IMP dehydrogenase 2; IMPD 2; IMPDH 2; IMPDH-II; IMPD2. The encoded protein is an enzyme with an amino acid length of 514 and a mass of 55.8 kDa. Other isoforms may exist. Inosine 5'-phosphate dehydrogenase 2 is a member of the IMPDH/GMPR family. This gene shares homology with other species, including: Rat, Zebrafish, Frog, Chicken.