Beta-tubulin is a protein that plays a crucial role in the structure and function of cells. It is one of the two subunits that make up tubulin, which is a key component of microtubules. Microtubules are part of the cytoskeleton, providing support and shape to cells, and are involved in various cellular processes, including cell division and intracellular transport. In addition to its structural role, beta-tubulin is important for the assembly and stability of microtubules. It interacts with alpha-tubulin to form heterodimers, which then polymerize to create the dynamic microtubule structures. Changes in beta-tubulin expression or mutations can affect cell function and are associated with certain diseases, including cancer.