Wolpert and Allison later proposed that this rearward particle movement could be due to the movement of the filamentous network inside ... and that actin filaments within lamellipodia are ...

The motion of motor proteins on biopolymers is important for diverse biological processes. Actin, microtubules, and nucleic acids can serve as one-dimensional tracks on which motor proteins move.

Actin filaments — protein structures critical to living movement from single cells to animals ... and then averages them to reduce random image “noise”— yielding a 3-D reconstruction of the molecule ...

The study marks the first time such a complex higher-order protein assembly ... was the first clear three-dimensional images ...

This function relies to a large extent on the presence of "adherens" and "tight junctions," veritable protein ... network of filaments that is stronger and stiffer than that made up of beta-actin ...