Reference: Roostalu J, et al. (2011) Directional switching of the kinesin Cin8 through motor coupling. Science 332(6025):94-9

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Abstract


Kinesin motor proteins are thought to move exclusively in either one or the other direction along microtubules. Proteins of the kinesin-5 family are tetrameric microtubule cross-linking motors important for cell division and differentiation in various organisms. Kinesin-5 motors are considered to be plus-end-directed. However, here we found that purified kinesin-5 Cin8 from budding yeast could behave as a bidirectional kinesin. On individual microtubules, single Cin8 motors were minus-end-directed motors, whereas they switched to plus-end-directed motility when working in a team of motors sliding antiparallel microtubules apart. This kinesin can thus change directionality of movement depending on whether it acts alone or in an ensemble.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
Roostalu J, Hentrich C, Bieling P, Telley IA, Schiebel E, Surrey T
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