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XB-ART-3900
Science 2004 Mar 05;3035663:1519-22. doi: 10.1126/science.1094838.
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A kinesin-like motor inhibits microtubule dynamic instability.

Bringmann H , Skiniotis G , Spilker A , Kandels-Lewis S , Vernos I , Surrey T .


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The motility of molecular motors and the dynamic instability of microtubules are key dynamic processes for mitotic spindle assembly and function. We report here that one of the mitotic kinesins that localizes to chromosomes, Xklp1 from Xenopus laevis, could inhibit microtubule growth and shrinkage. This effect appeared to be mediated by a structural change in the microtubule lattice. We also found that Xklp1 could act as a fast, nonprocessive, plus end-directed molecular motor. The integration of the two properties, motility and inhibition of microtubule dynamics, in one molecule emphasizes the versatile properties of kinesin family members.

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Species referenced: Xenopus laevis
Genes referenced: kif4a nat14