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 cytoskeleton, providing support and shape to the cell, as well as facilitating intracellular transport. In addition to its structural role, alpha tubulin is involved in cell division. During mitosis, microtubules help separate chromosomes, ensuring that each daughter cell receives the correct genetic material. This process is vital for growth, development, and tissue repair in living organisms.