To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S2. Elongation and Xac2-induced filament severing of untrapped F-actin (Fig. 1B). Untrapped F-actin grows from mDia1 immobilized on the glass surface. The pointed end side of this F-actin is not trapped to the glass surface. Scale bar is 5 μm. Helical rotation of the diaphanous-related formin mDia1 generates actin filaments resistant to cofilin Hiroaki Mizuno, Kotaro Tanaka, Sawako Yamashiro, Akihiro Narita, and Naoki Watanabe PNAS. 2018. 115:E5000-E5007 DOI: 10.1073/pnas.1803415115 Download Original Video Browse All Videos »