microtubules-002

microtubules-002

Movie of a polymerizing microtubule (originating in bottom left corner) encountering a static microtubule in middle of screen.  During the encounter the polymerizing microtubule is bent by a fluorescently-labeled complex of end-binding protein 1 (EB1) and a kinesin motor.  After being bent, the microtubule eventually snaps back to its original position and the EB1-kinesin complex continues to walk along the static microtubule.  Time (in seconds) is shown at top right and scale bar is 1 micron.

William Hancock/Penn State