To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S3. Example movie of an irreversible gold-Tub2-KCK binding event (100 frames per second). The microtubule shows thermal fluctuations, and the gold-Tub2-KCK fluctuates with it. Scale bar 0.5 μm. Direct observation of individual tubulin dimers binding to growing microtubules Keith J. Mickolajczyk, Elisabeth A. Geyer, Tae Kim, Luke M. Rice, and William O. Hancock PNAS. 2019. 116:7314-7322 DOI: 10.1073/pnas.1815823116 Download Original Video Browse All Videos »