Actin is a ubiquitous and an essential component of the cytoskeleton, with critical roles in a wide range of cellular processes. It is abundant protein whose monomers polymerize into polarized actin filaments, within epithelial cells. Filamentous actin is concentrated at the plasma membrane where a wide variety of actin-associated proteins harness the potential and structure of actin filaments to moderate functions at the plasma membrane (1).
