News and Views
Nature Cell Biology 8, 903 - 905 (2006)
doi:10.1038/ncb0906-903
Kinesin-8s: motoring and depolymerizing
Claire E. Walczak1
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Claire E. Walczak is in the Medical Sciences Program, Indiana University, Myers Hall 262, 915 East 3rd St., Bloomington, IN 47405, USA.
e-mail: cwalczak@indiana.edu
Abstract
Kinesins conventionally act as molecular motor proteins that translocate along microtubules. However, several kinesins also control microtubule polymerization dynamics. New work shows that the yeast kinesin-8 Kip3p has a unique combination of plus-end motor and plus-end depolymerase activities. These activities facilitate the positioning of the mitotic spindle at the cell cortex.
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