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 cytoskeleton. Kinesins use energy from ATP, a molecule that provides energy for many cellular processes, to "walk" along these microtubules, carrying various cargo such as organelles and proteins to their destinations within the cell. These proteins are essential for many cellular functions, including cell division and the movement of neurotransmitters in neurons. By ensuring that important materials are delivered where they are needed, kinesins help maintain the overall health and functionality of cells, contributing to the proper functioning of the entire organism, including humans and other animals.