PMM2 is a symbol for the gene, Phosphomannomutase 2, in humans. Other names include: PMM 2; phosphomannose isomerase 1; CDG1; CDG1a; CDGS; PMI1. The encoded protein is an enzyme with an amino acid length of 246 and a mass of 28.1 kDa. PMM2 is a member of the Eukaryotic PMM family. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Frog, Chicken.