ATP-dependent actin barbed-end fluctuations at steady state

Proceedings of the National Academy of Sciences, Volume 122, Issue 47, November 2025. SignificanceEukaryotic cells rely on networks of actin filaments to move, divide, and maintain shape. Filaments in these networks continuously add and lose actin subunits at their ends. The prevailing view is treadmilling, where growth at one end is …