title: Conformational aspects of polypeptide structure. XLI. Crystal structure of S-thiazolidine-4-carboxylic acid and helical structure of poly((S)-thiazolidine-4-carboxylic acid).
mesh_terms: D002264:Carboxylic Acids / Q000032:analysis; D008956:Models, Chemical; D010455:Peptides / Q000032:analysis*; D011108:Polymers / Q000032:analysis; D011487:Protein Conformation; D013844:Thiazoles / Q000032:analysis*; D014961:X-Ray Diffraction
chemical_list: D002264:Carboxylic Acids; D010455:Peptides; D011108:Polymers; D013844:Thiazoles