Importin Subunit Alpha-6 (KPNA5) Antibody
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Description
The transport of molecules between the nucleus and the cytoplasm in eukaryotic cells is mediated by the nuclear pore complex (NPC) which consists of 60-100 proteins and is probably 120 million daltons in molecular size. Small molecules (up to 70 kD) can pass through the nuclear pore by nonselective diffusion; larger molecules are transported by an active process. Most nuclear proteins contain short basic amino acid sequences known as nuclear localization signals (NLSs). KPNA5 protein belongs to the importin alpha protein family and is thought to be involved in NLS-dependent protein import into the nucleus.
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Product specifications
| Category | Primary Antibodies |
| Immunogen Target | Importin Subunit Alpha-6 (KPNA5) |
| Host | Rabbit |
| Reactivity | Human |
| Recommended Dilution | WB: 1/1000. Optimal dilutions/concentrations should be determined by the end user. |
| Clonality | Polyclonal |
| Conjugation | Unconjugated |
| Isotype | IgG |
| Purification | Purified through a protein A column, followed by peptide affinity purification. |
| Size 1 | 80 µl |
| Size 2 | 400 µl |
| Form | Liquid |
| Tested Applications | ELISA, WB |
| Buffer | PBS containing 0.09% sodium azide. |
| Availability | Shipped within 5-10 working days. |
| Storage | Aliquot and store at -20°C. Avoid repeated freeze/thaw cycles. |
| Dry Ice | No |
| UniProt ID | O15131 |
| Alias | IPOA6,SRP6,Importin subunit alpha-6 |
| Background | Antibody anti-KPNA5 |
| Status | RUO |
Descripción
KPNA5, or importin-α6, functions as an adaptor protein mediating the nuclear import of cargo proteins containing classical nuclear localization signals (NLS). It forms a heterodimer with importin-β to translocate proteins across the nuclear pore complex (NPC) in an energy-dependent manner. KPNA5 is predominantly expressed in the brain, testes, and immune cells, suggesting specialized roles in neuronal function, germ cell development, and immune regulation. It regulates nuclear import of transcription factors and signaling proteins involved in cell differentiation, stress responses, and viral replication. KPNA5 is implicated in neurodevelopmental disorders and cancers, where it modulates nuclear transport of growth and survival regulators. Functional studies demonstrate its critical role in maintaining nuclear transport specificity and cellular homeostasis during development and disease progression.
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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. Mediates nuclear import of STAT1 homodimers and STAT1/STAT2 heterodimers by recognizing non-classical NLSs of STAT1 and STAT2 through ARM repeats 8-9. Recognizes influenza A virus nucleoprotein through ARM repeat 7-9 In vitro, mediates the nuclear import of human cytomegalovirus UL84 by recognizing a non-classical NLS.
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