KPNA1 (Importin Subunit alpha-1, Karyopherin Subunit alpha-1, Nucleoprotein Interactor 1, NPI-1, RAG Cohort Protein 2, SRP1-beta, RCH2)

Antibodies / Antibodies-Transport Proteins

-20°C

Supplied as a liquid in Tris saline, 0.02% sodium azide, pH 7.3, 0.5% BSA.

Synthetic peptide corresponding to TTPGKENFRLKSY-C, from human KPNA1, at N-terminal (NP_002255.3).

Functions in nuclear protein import as an adapter protein for nuclear receptor KPNB1. Binds specifically and directly to substrates containing either a simple or bipartite NLS motif. Docking of the importin/substrate complex to the nuclear pore complex (NPC) is mediated by KPNB1 through binding to nucleoporin FxFG repeats 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 importin-beta and the three components separate and importin-alpha and -beta are re-exported from the nucleus to the cytoplasm where GTP hydrolysis releases Ran from importin. 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. In vitro, mediates the nuclear import of human cytomegalovirus UL84 by recognizing a non-classical NLS.

Applications:
Suitable for use in ELISA and Western Blot Other applications not tested.

Recommended Dilution:
ELISA: 1:32, 000
Western Blot: 1-3ug/ml, observed in lysates of cell lines HEK293 on ~60kD bands
Optimal dilutions to be determined by the researcher.

Storage and Stability:
May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.