Cambridge Cluster Database - Low+energy configurations for atomic and molecular clusters bound by various potential energy functions. Images and Cartesian coordinates are supplied.
Molecular Models for Biochemistry - Pictures of the molecular structure of amino acids. Also features common properties of all amino acids, peptide structures, and a protein structure quiz.
Protein Data Bank - Three+dimensional structures of biological macromolecules. Also includes newsletters and a description of the Protein Data Bank file format.
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