Directing Transport of CoFe₂O₄‐Functionalized Microtubules with Magnetic Fields

Steering with magnets: Magnetic fields are used to control the direction of movement of microtubules as they are transported atop a kinesin-motor-covered surface. The microtubules are heterogeneously labeled with magnetic nanoparticles, thereby allowing the magnetic leading end to be directed in response to a magnetic field, while the nonlabeled trailing end maintains an unhindered interaction with the motor surface (see schematic representation). Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2296/2007/z600410_s.html or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.