These structures can be destabilized using katanin or stathmin, and undergo a phenomenon known as dynamic instability in which they oscillate between growing and shrinking phases apparently at random.  Each of these structure
These structures can be destabilized using katanin or stathmin, and undergo a phenomenon known as dynamic instability in which they oscillate between growing and shrinking phases apparently at random.  Each of these structures originates from a namesake "organizing center", and MAP Kinase phosphorylates a group of proteins responsible for assembling and stabilizing these structures.  Both kinesin and dynein transport molecules along these structures, which appear in a 9+2 arrangement in flagella and cilia.  FTP, identify this smallest part of the cytoskeleton, made up of tubulin.
These structures can be destabilized using katanin or stathmin, and undergo a phenomenon known as dynamic instability in which they oscillate between growing and shrinking phases apparently at random.  
{microtubules}