Dynamin is a type of protein that plays a crucial role in cellular processes, particularly in the formation of vesicles. These vesicles are small, membrane-bound sacs that transport materials within cells. Dynamin helps pinch off these vesicles from the cell membrane, allowing them to carry proteins, lipids, and other molecules to their intended destinations. In addition to its role in vesicle formation, dynamin is also involved in endocytosis, a process where cells engulf external substances. This function is essential for nutrient uptake and communication between cells, making dynamin vital for maintaining cellular health and function.