Cytoskeletal proteins are essential components of the cell's cytoskeleton, a network that provides structural support and shape to cells. These proteins are categorized into three main types: microfilaments, intermediate filaments, and microtubules. Each type plays a unique role in maintaining cell integrity, facilitating movement, and organizing cellular components. Microfilaments, primarily composed of actin, are involved in cell motility and shape changes. Intermediate filaments provide mechanical strength, while microtubules, made of tubulin, are crucial for intracellular transport and cell division. Together, these proteins enable cells to function effectively and respond to their environment.