Answer
Actin filaments are often anchored to a variety of intracellular structures at their opposing ends, including the cell's cytoskeleton or the plasma membrane. These connections provide the actin filaments stability and keep them from penetrating too deeply inside the cell.
Work Step by Step
Protein vinculin can bind to actin filaments and anchor them to the plasma membrane, while other proteins such as spectrin and dystrophin anchor actin filaments to the cytoskeleton.
The anchoring of actin filaments is essential for the proper functioning of cells, including cell movement, division, and shape maintenance.