Protein interactions animation. Clip 1 of 10. Opening clip in an animation sequence showing protein interactions within a dividing cell. This clip, which includes labels, shows proteins green above the surface of a white blood cell. The colour fades as the viewpoint starts to move down towards the cell membrane. The full sequence of ten clips shows the interaction between the protein calmodulin CaM, calcium_modulated protein, calcium ions, the MLCK myosin light_chain kinase protein, and the actin_myosin bundles of the cell磗 cytoskeleton, resulting in contraction of the membrane and cell division. For the entire sequence, see clips K003/3847 to K003/3838. For the same sequence as an anaglyph 3D animation, see clips K003/4492 to K003/4483.