Chapter 12: The Cytoskeleton and Cell Movement

Animations

The following animations are available for this chapter:

12.1 Assembly of an Actin Filament Actin monomers polymerize to form actin filaments, a process that is reversible and is regulated within the cell by actin-binding proteins.
12.2 A Thin Filament The thin filaments of skeletal muscle consist of actin filaments decorated with tropomyosin-troponin complexes covering its myosin binding sites.
12.3 Microtubule Assembly Tubulin dimers can polymerize as well as depolymerize to assemble or break down microtubules.
12.4 Kinesin Kinesin is a motor protein that moves vesicles and organelles toward the plus ends of microtubules.

These animations are in Adobe Flash format. These require the Flash player (version 9 or newer recommended), which can be downloaded free of charge from the Adobe website:
http://www.adobe.com/software/flashplayer/