... sup-port needed to maintain the shape and organization of the cell and the scaffolding for the actions of catalyticmolecules such as motor proteins. Nowadays, the actincytoskeleton is widely ... natural blocker of the Na+pump and an inhibitor of palytoxin action, have pro-vided interesting findings. Through the partial inhibition of Na+⁄ K+-ATPase, and regardless of changes in intra-cellular ... spectrin, actin and ankyrin [48,49], and even regulation of Na+pumpactivity might depend on its linkage to the actin filamentsystem [50,51]. In any case, the study of the possibleexistence of some...