title: Optical activity of doubly ordered macromolecules.
mesh_terms: D000599:Amino Acids, Diamino; D000613:Aminobutyrates / Q000031:analogs & derivatives; D008433:Mathematics; D008956:Models, Chemical; D008968:Molecular Conformation; D009904:Optical Rotation; D010455:Peptides; D013237:Stereoisomerism
chemical_list: D000599:Amino Acids, Diamino; D000613:Aminobutyrates; D010455:Peptides