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 the building block of microtubules. Microtubules are essential components of the cytoskeleton, providing support and shape to cells, and are involved in various cellular processes, including cell division and intracellular transport. Beta-tubulin, along with its partner alpha-tubulin, forms heterodimers that polymerize to create microtubules. These structures are dynamic, meaning they can grow and shrink as needed, allowing cells to adapt to different conditions. The proper functioning of beta-tubulin is vital for maintaining cellular integrity and facilitating movement within the cell.