| Function | Nuclear transport receptor that mediates nuclear import of proteins, such as histones, RPS3A, TNP2 and VDR. 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 the histone H3-H4 dimer when in complex with ASF1 (ASF1A or ASF1B). Mediates the ligand-independent nuclear import of vitamin D receptor (VDR). In vitro, mediates the nuclear import of human cytomegalovirus UL84 by recognizing a non-classical NLS. |
| Protein Name | Importin-4Imp4Importin-4bImp4bRan-Binding Protein 4Ranbp4 |
| Database Links | |
| Cellular Localisation | CytoplasmNucleus |
| Alternative Antibody Names | Anti-Importin-4 antibodyAnti-Imp4 antibodyAnti-Importin-4b antibodyAnti-Imp4b antibodyAnti-Ran-Binding Protein 4 antibodyAnti-Ranbp4 antibodyAnti-IPO4 antibodyAnti-IMP4B antibodyAnti-RANBP4 antibody |
Information sourced from Uniprot.org
![Western blot analysis of lysates from wild type (WT) and IPO4 knockout (KO) 293T cells, using [KO Validated] IPO4 Rabbit polyclonal antibody (STJ11100778) at 1:3000 dilution. Secondary antibody: HRP Goat Anti-Rabbit IgG (H+L) (STJS000856) at 1:10000 dilution. Lysates/proteins: 25 Mu g per lane. Blocking buffer: 3% nonfat dry milk in TBST. Detection: ECL Basic Kit. Exposure time: 1s.](https://cdn11.bigcommerce.com/s-zso2xnchw9/images/stencil/600x533/products/89714/358196/STJ11100778_1__20770.1713122514.jpg?c=1 "Western blot analysis of lysates from wild type (WT) and IPO4 knockout (KO) 293T cells, using [KO Validated] IPO4 Rabbit polyclonal antibody (STJ11100778) at 1:3000 dilution. Secondary antibody: HRP Goat Anti-Rabbit IgG (H+L) (STJS000856) at 1:10000 dilution. Lysates/proteins: 25 Mu g per lane. Blocking buffer: 3% nonfat dry milk in TBST. Detection: ECL Basic Kit. Exposure time: 1s.")
