CYFIP1 is a symbol for the gene, Cytoplasmic FMR1 interacting protein 1, in humans. Other names include: Cytoplasmic FMR1-interacting protein 1; Specifically Rac1-associated protein 1; Sra-1; p140sra-1; selective hybridizing clone; cytoplasmic FMRP interacting protein 1; SHYC. The encoded protein has an amino acid length of 1253 and a mass of 145.2 kDa. Other isoforms may exist. CYFIP1 is a member of the CYFIP family. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Frog, Chicken.