Kpna3 is a symbol for the gene, Karyopherin alpha 3 (importin alpha 4), in humans. Other names include: Importin subunit alpha-4; Importin alpha Q2; Qip2; Karyopherin subunit alpha-3; SRP1-gamma; IPOA4; SRP1; SRP1gamma; SRP4; hSRP1. The encoded protein has an amino acid length of 521 and a mass of 57.8 kDa. Kpna3 is a member of the Importin alpha family. This gene shares homology with other species, including: Mouse, Fly, Rat, Zebrafish, Frog, Chicken.