DNA/DNA, Alpha helix, Coil, Disulfide bond. Lac repressor binding to DNA. The repressor protein bends its DNA operon as nonspecific DNA binding changes to specific binding that recognizes a sequence of bases. More..

This is a true movie. Unlike an animation in Jmol, you can't rotate it, zoom it, or have buttons that change the colors or rendering. (This movie is an old multi-GIF made with RasMol. Using Jmol, you can make mpeg movies with higher-quality images.) More..