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KPNA2 Antibody
- SPECIFICATION
- CITATIONS
- PROTOCOLS
- BACKGROUND
Application 
| WB, IHC-P, IF, E |
|---|---|
| Primary Accession | P52292 |
| Other Accession | NP_002257, 4504897 |
| Reactivity | Human, Mouse, Rat |
| Host | Rabbit |
| Clonality | Polyclonal |
| Isotype | IgG |
| Calculated MW | 57862 Da |
| Application Notes | KPNA2 antibody can be used for detection of KPNA2 by Western blot at 1 - 2 µg/mL. Antibody can also be used for immunohistochemistry starting at 5 µg/mL. For immunofluorescence start at 20 µg/mL. |
| Gene ID | 3838 |
|---|---|
| Target/Specificity | KPNA2; |
| Reconstitution & Storage | KPNA2 antibody can be stored at 4℃ for three months and -20℃, stable for up to one year. As with all antibodies care should be taken to avoid repeated freeze thaw cycles. Antibodies should not be exposed to prolonged high temperatures. |
| Precautions | KPNA2 Antibody is for research use only and not for use in diagnostic or therapeutic procedures. |
| Name | KPNA2 (HGNC:6395) |
|---|---|
| Synonyms | RCH1, SRP1 |
| Function | 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. |
| Cellular Location | Cytoplasm. Nucleus |
| Tissue Location | Expressed ubiquitously. |
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Provided below are standard protocols that you may find useful for product applications.
Background
KPNA2 Antibody: Karyopherin, a cytosolic and heterodimeric protein complex consisting of alpha and beta subunits, is responsible for targeting proteins with nuclear localization signals to the nuclear pore complex by an energy requiring, Ran-dependent mechanism. The alpha subunit and imported substrate enter the nucleus and accumulate in the nucleoplasm, while the beta subunit accumulates at the NPC. KPNA2 is the alpha subunit 2 of karyopherin, which forms a complex with importin subunit beta-1 and functions as a cargo carrier that transports various complexes from cytoplasm into nucleus. It is ubiquitously expressed and contains an IBB/importin beta domain, ten Armadillo repeats that bind "cargo" and three intervening nuclear localization sequences (NLSs). It has recently been reported to play an important role in tumorigenesis and tumor progression.
References
Moroianu J. Molecular mechanisms of nuclear protein transport. Crit. Rev. Eukaryot. Gene Expr.1997; 7:61-72.
Gilchrist D and Rexach M. Molecular basis for the rapid dissociation of nuclear localization signals from karyopherin alpha in the nucleoplasm. J. Biol. Chem.2003; 278: 51937-49.
Tseng SF, Chang CY, Wu KJ, et al. Importin KPNA2 is required for proper nuclear localization and multiple functions of NBS1. J. Biol. Chem.2005; 280:39594-600.
Sakai M, Sohda M, Miyazaki T, et al. Significance of karyopherin-{alpha} 2 (KPNA2) expression in esophageal squamous cell carcinoma. Anticancer Res.2010; 30:851-6.
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