Microtubules are important cytoskeletal structures that can be modified in ways that allow for specific cellular functions. Kinesins are microtubule motors, and a recent study has tested how different kinesins move along microtubules modified in different ways. For example, one kinesin will only walk along stable microtubules, while two other kinesin motors are not so selective. The image above shows a Kinesin-2 family member (left) moving along all microtubule tracks (middle) in a cell.
Reference: Dawen Cai, Dyke P. McEwen, Jeffery R. Martens, Edgar Meyhofer, Kristen J. Verhey. Their PLoS Biology paper can be found here.