Alpha-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 essential for forming microtubules. These microtubules are part of the cell's cytoskeleton, providing support and shape, and are involved in processes like cell division and intracellular transport. In addition to its structural role, alpha-tubulin is important for cellular signaling and movement. It interacts with other proteins and can be modified by various chemical groups, influencing its function. Understanding alpha-tubulin is vital for studying cellular processes and diseases related to the cytoskeleton.