分子量:
110417 Da
细胞定位:
Antigen Cellular Localization:Cytoplasm. Nucleus. Note=Shuttles between the nucleus and the cytoplasm
形式:
Purified polyclonal antibody supplied in PBS with 0.09% (W/V) sodium azide. This antibody is prepared by Saturated Ammonium Sulfate (SAS) precipitation followed by dialysis against PBS.
参考文献:
Goldberg, G.S., et al., J. Biol. Chem. 278(47):46533-46540 (2003).Behrens, P., et al., Apoptosis 8(1):39-44 (2003).Jiang, M.C., et al., Biochem. Biophys. Res. Commun. 294(4):900-905 (2002).Wellmann, A., et al., Int. J. Mol. Med. 7(5):489-494 (2001).Brinkmann, U., et al., Genomics 58(1):41-49 (1999).
产品概述:
We constantly strive to ensure we provide our customers with the best antibodies. As a result of this work we offer this antibody in purified format. We are in the process of updating our datasheets. If you have any questions regarding this update, please feel free to contact our technical support team.This product is a high quality Cellular Apoptosis Susceptibility antibody (C-term).
功能:
Export receptor for importin-alpha. Mediates importin- alpha re-export from the nucleus to the cytoplasm after import substrates (cargos) have been released into the nucleoplasm. In the nucleus binds cooperatively to importin-alpha and to the GTPase Ran in its active GTP-bound form. Docking of this trimeric complex to the nuclear pore complex (NPC) is mediated through binding to nucleoporins. Upon transit of a nuclear export complex into the cytoplasm, disassembling of the complex and hydrolysis of Ran-GTP to Ran-GDP (induced by RANBP1 and RANGAP1, respectively) cause release of the importin-alpha from the export receptor. CSE1L/XPO2 then return to the nuclear compartment and mediate another round of transport. The directionality of nuclear export is thought to be conferred by an asymmetric distribution of the GTP- and GDP-bound forms of Ran between the cytoplasm and nucleus.
总结:
Proteins that carry a nuclear localization signal (NLS) are transported into the nucleus by the importin-alpha/beta heterodimer. Importin-alpha binds the NLS, while importin-beta mediates translocation through the nuclear pore complex. After translocation, RanGTP binds importin-beta and displaces importin-alpha. Importin-alpha must then be returned to the cytoplasm, leaving the NLS protein behind. CSE1L binds strongly to NLS-free importin-alpha, and this binding is released in the cytoplasm by the combined action of RANBP1 and RANGAP1. In addition, CSE1L may play a role both in apoptosis and in cell proliferation.
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