Recombinant Human Importin-9 (IPO9), Truncated

Uniprot Id

Q96P70

Target Species

Human

Target Name

IPO9

Target Full Name

Importin-9

Target Function

Functions in nuclear protein import as nuclear transport receptor. Serves as receptor for nuclear localization signals (NLS) in cargo substrates. Is thought to mediate docking of the importin/substrate complex to the nuclear pore complex (NPC) through binding to nucleoporin and the complex is subsequently translocated through the pore by an energy requiring, Ran-dependent mechanism. At the nucleoplasmic side of the NPC, Ran binds to the importin, the importin/substrate complex dissociates and importin is re-exported from the nucleus to the cytoplasm where GTP hydrolysis releases Ran. The directionality of nuclear import is thought to be conferred by an asymmetric distribution of the GTP- and GDP-bound forms of Ran between the cytoplasm and nucleus. Mediates the nuclear import of RPS7, RPL18A, RPL6, histone H2A, histone H2B and histone. Prevents the cytoplasmic aggregation of RPS7 and RPL18A by shielding exposed basic domains. Mediates the nuclear import of actin.

Target Subcellular Location

Cytoplasm. Nucleus.

Target Protein Families

Importin beta family

Target Synonyms

Imp9; Imp9a; Imp9b; Importin-9; Importin-9a; Ipo9; IPO9_HUMAN; Ran-binding protein 9; RanBP9

Target Background

Enables nuclear import signal receptor activity. Involved in protein import into nucleus. Located in cytoplasm.