Material Detail

A video with voice explanation (no music), at http://tinyurl.com/RamachandranPrincipleYouTube, with numerous animated molecular models explaining polypeptide backbones, peptide bonds, phi and psi angles with detailed illustrations of dihedral (torsion) angles. Inter-atomic clashes are shown forming and receding as phi and psi rotate, and clashes are related to the Ramachandran plot. There is a short practice quiz (immediate feedback), a Slideshow version (also in Spanish), and also an interactive version with button and checkbox controls.

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