title: Conformational analysis of aromatic amino acids by x-ray crystallography.
mesh_terms: D000596:Amino Acids / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D008968:Molecular Conformation; D009904:Optical Rotation; D010649:Phenylalanine / Q000032:analysis; D014443:Tyrosine / Q000032:analysis; D014961:X-Ray Diffraction
chemical_list: D000596:Amino Acids; D014443:Tyrosine; D010649:Phenylalanine