Actin filaments, also known as microfilaments, are thin, thread-like structures made of a protein called actin. They are a key component of the cytoskeleton in eukaryotic cells, providing structural support and shape. Actin filaments are involved in various cellular processes, including cell movement, division, and the maintenance of cell shape. They can rapidly grow and shrink, allowing cells to adapt to their environment. These filaments are often found in bundles or networks, contributing to the formation of structures like muscle fibers and cellular protrusions such as lamellipodia and filopodia. Actin filaments interact with other proteins to facilitate movement and transport within the cell, playing a crucial role in processes like cytokinesis