Kinesins are a type of motor protein that play a crucial role in transporting cellular materials. They move along structures called microtubules, which are part of the cell's skeleton, helping to carry important substances like organelles and vesicles to different parts of the cell. This movement is essential for various cellular functions, including cell division and communication. These proteins use energy from ATP (adenosine triphosphate) to "walk" along the microtubules, much like a person walking along a path. Kinesins are vital for maintaining the organization and health of cells, making them key players in many biological processes.