ALS1 is an alias for the gene, Superoxide dismutase 1, soluble, in humans. Other names include: Superoxide dismutase [Cu-Zn]; hSod1; Superoxide dismutase [Cu-Zn] ; Superoxide dismutase 1; HEL-S-44; IPOA; SOD; homodimer. The encoded protein is an enzyme with an amino acid length of 154 and a mass of 15.9 kDa. Other isoforms may exist. ALS1 is a member of the Cu-Zn superoxide dismutase family. This gene shares homology with other species, including: Mouse, Fly, Yeast, Rat, Zebrafish, Frog, Chicken.