Abstract:
:The guanosine tri-phosphatase Ran stimulates assembly of microtubule spindles. However, it is not known what aspects of the microtubule cytoskeleton are subject to regulation by Ran in mitosis. Here we show that Ran-GTP stimulates microtubule assembly by increasing the rescue frequency of microtubules three- to eightfold. In addition to changing microtubule dynamics, Ran-GTP also alters the balance of motor activities, partly as a result of an increase in the amount of motile Eg5, a plus-end-directed microtubule motor that is essential for spindle formation. Thus, Ran regulates multiple processes that are involved in spindle assembly.
journal_name
Nat Cell Bioljournal_title
Nature cell biologyauthors
Wilde A,Lizarraga SB,Zhang L,Wiese C,Gliksman NR,Walczak CE,Zheng Ydoi
10.1038/35060000keywords:
subject
Has Abstractpub_date
2001-03-01 00:00:00pages
221-7issue
3eissn
1465-7392issn
1476-4679journal_volume
3pub_type
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