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Importin alpha-4 (KPNA4)Antibody (C-term) Blocking peptide
Synthetic peptide
- SPECIFICATION
- CITATIONS
- PROTOCOLS
- BACKGROUND
| Primary Accession | O00629 |
|---|---|
| Clone Names | 50908305 |
| Gene ID | 3840 |
|---|---|
| Other Names | Importin subunit alpha-3, Importin alpha Q1, Qip1, Karyopherin subunit alpha-4, KPNA4, QIP1 |
| Target/Specificity | The synthetic peptide sequence used to generate the antibody AP1968a was selected from the N-term region of human Importin alpha-4. A 10 to 100 fold molar excess to antibody is recommended. Precise conditions should be optimized for a particular assay. |
| Format | Peptides are lyophilized in a solid powder format. Peptides can be reconstituted in solution using the appropriate buffer as needed. |
| Storage | Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C. |
| Precautions | This product is for research use only. Not for use in diagnostic or therapeutic procedures. |
| Name | KPNA4 |
|---|---|
| Synonyms | QIP1 |
| 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. In vitro, mediates the nuclear import of human cytomegalovirus UL84 by recognizing a non-classical NLS. In vitro, mediates the nuclear import of human cytomegalovirus UL84 by recognizing a non-classical NLS. |
| Cellular Location | Cytoplasm. Nucleus. |
| Tissue Location | Highly expressed in testis, ovary, small intestine, heart, skeletal muscle, lung and pancreas, but barely detectable in kidney, thymus, colon and peripheral blood leukocytes |
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Provided below are standard protocols that you may find useful for product applications.
Background
The nuclear import of karyophilic proteins is directed by short amino acid sequences termed nuclear localization signals (NLSs). Karyopherins, or importins, are cytoplasmic proteins that recognize NLSs and dock NLS-containing proteins to the nuclear pore complex. The protein encoded by this gene shares the sequence similarity with Xenopus importin-alpha and Saccharomyces cerevisiae Srp1. This protein is found to interact with the NLSs of DNA helicase Q1 and SV40 T antigen.
References
Dvorin, J.D., et al., J. Virol. 76(23):12087-12096 (2002).Limon, A., et al., J. Virol. 76(21):10598-10607 (2002).Hariton-Gazal, E., et al., Biochim. Biophys. Acta 1594(2):234-242 (2002).Depienne, C., et al., J. Biol. Chem. 276(21):18102-18107 (2001).Bouyac-Bertoia, M., et al., Mol. Cell 7(5):1025-1035 (2001).
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