The phosphorylation of stathmin can cause an increased growth in these structures, and proteins called CLASPs prevent catastrophe from occurring in these structures. Vinblastine and colchicine can cause depolymerization of these structures which are severed by katanin. The motor proteins dynein and kinesin move toward one of these structure's minus end and plus end, respectively. GTP binds to the alpha and beta forms of a certain protein which composes the dimers which make up these structures. 
The phosphorylation of stathmin can cause an increased growth in these structures, and proteins called CLASPs prevent catastrophe from occurring in these structures. Vinblastine and colchicine can cause depolymerization of these structures which are severed by katanin. The motor proteins dynein and kinesin move toward one of these structure's minus end and plus end, respectively. GTP binds to the alpha and beta forms of a certain protein which composes the dimers which make up these structures. For 10 points, name these components of the cytoskeleton which are composed of tubulin.
The phosphorylation of stathmin can cause an increased growth in these structures, and proteins called CLASPs prevent catastrophe from occurring in these structures.
{Microtubules}