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COMMENTARY |
Biochemie-Zentrum Heidelberg (BZH), Im Neuenheimer Feld 328, 4. OG, Heidelberg 69120, Germany
*Author for correspondence (e-mail: markus.kuenzler{at}urz.uni-heidelberg.de)
The Ran GTPase plays a key role in nucleocytoplasmic transport. In its GTP-bound form, it directly interacts with members of the importin ß family of nuclear transport receptors and modulates their association with cargo. Work in cell-free higher-eukaryote systems has demonstrated additional roles for Ran in spindle and nuclear envelope formation during mitosis. However, until recently, no Ran-target proteins in these cellular processes were known. Several groups have now identified importin ß as one important target of Ran during mitotic spindle formation. This finding suggests that Ran uses the same effectors to regulate different cellular processes.
Key words: Ran-binding, GSP1, SPI1, Karyopherins, Microtubules
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S. S. Salus, J. Demeter, and S. Sazer The Ran GTPase System in Fission Yeast Affects Microtubules and Cytokinesis in Cells That Are Competent for Nucleocytoplasmic Protein Transport Mol. Cell. Biol., December 15, 2002; 22(24): 8491 - 8505. [Abstract] [Full Text] [PDF] |
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