Kpna4 encodes the human gene, Karyopherin alpha 4 (importin alpha 3). It may also be known as: Importin subunit alpha-3; Importin alpha Q1; Qip1; Karyopherin subunit alpha-4; IPOA3; SRP3. The encoded protein has an amino acid length of 521 and a mass of 57.9 kDa. Kpna4 is a member of the Importin alpha family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.