Alpha-tubulin is a protein that plays a crucial role in the formation of microtubules, which are essential components of the cytoskeleton in eukaryotic cells. Microtubules provide structural support, facilitate intracellular transport, and are involved in cell division. Alpha-tubulin pairs with beta-tubulin to form heterodimers, which then assemble into long, hollow tubes. These microtubules are dynamic structures, meaning they can grow and shrink as needed, allowing cells to adapt to various functions. Alpha-tubulin is also involved in the organization of the mitotic spindle during mitosis, ensuring proper chromosome separation. Its proper function is vital for cell health and division.