Karyopherin Alpha 3 (KPNA3) Antibody

Background

KPNA3, or importin-α3, is another member of the importin-α family that mediates the nuclear import of cargo proteins with classical nuclear localization signals (NLS). It interacts with importin-β to form a complex that transports cargo proteins through the nuclear pore complex (NPC). KPNA3 is expressed in various tissues and is particularly important in regulating nuclear transport during cell signaling, differentiation, and immune responses. It has roles in viral infections, where it mediates the nuclear import of viral proteins such as influenza and HIV components, aiding viral replication. Dysregulation of KPNA3 is associated with neurological disorders and cancer, where it influences nuclear transport of transcription factors and oncogenes. Knockout and functional studies show its essential role in maintaining cellular homeostasis and regulating nuclear import efficiency during development and stress responses.