, Volume 27, Issue 2, pp 125-137

Interaction of kinesin motors, microtubules, and MAPs

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Abstract

Kinesins are a family of microtubule-dependent motor proteins that carry cargoes such as vesicles, organelles, or protein complexes along microtubules. Here we summarize structural studies of the “conventional” motor protein kinesin-1 and its interactions with microtubules, as determined by X-ray crystallography and cryo-electron microscopy. In particular, we consider the docking between the kinesin motor domain and tubulin subunits and summarize the evidence that kinesin binds mainly to β tubulin with the switch-2 helix close to the intradimer interface between α and β tubulin.