CBY3 is a symbol for the gene, Chibby homolog 3 (Drosophila), in humans. Other names include: Protein chibby homolog 3. The encoded protein has an amino acid length of 242 and a mass of 27.3 kDa. CBY3 is a member of the Chibby family. This gene shares homology with other species, including: Mouse, Rat.