Spinophilin is an alias for the gene, Protein phosphatase 1 regulatory subunit 9B, in humans. Other names include: Neurabin-2; Spinophilin; Neurabin-II; PPP1R6; PPP1R9; SPINO; Spn; protein phosphatase 1, regulatory subunit 9B. The encoded protein has an amino acid length of 815 and a mass of 89.2 kDa. Other isoforms may exist. This gene shares homology with other species, including: Mouse, Rat, Frog, Chicken.