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Comment
. 2007 Mar 23;128(6):1033-4.
doi: 10.1016/j.cell.2007.03.003.

Kinesin Kar3 and Vik1 go head to head

Günther Woehlke  1 , Manfred Schliwa
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Kinesin Kar3 and Vik1 go head to head

Günther Woehlke et al. Cell. .
Free article

Abstract

The yeast kinesin motor protein Kar3 forms a heterodimer with a nonmotor protein Vik1. A study in this issue by Allingham et al. (2007) reveals that Vik1 unexpectedly has a structure similar to a kinesin motor domain yet lacks a nucleotide-binding site and is thus catalytically inactive. However, this does not hinder movement of the heterodimer because other features of the remarkably divergent Vik1 motor domain are retained, including the ability to bind microtubules.

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