title: Immunochemical studies on the evolution of tryptophanase and the two subunits of tryptophan synthetase of Escherichia coli K 12.
mesh_terms: D005075:Biological Evolution; D003168:Complement Fixation Tests; D003429:Cross Reactions; D004926:Escherichia coli / Q000201:enzymology*; D006386:Hemagglutination Tests; D008190:Lyases / Q000032:analysis*; D046911:Macromolecular Substances; D011489:Protein Denaturation; D014367:Tryptophan Synthase / Q000032:analysis*; D014368:Tryptophanase / Q000032:analysis*
chemical_list: D046911:Macromolecular Substances; D008190:Lyases; D014368:Tryptophanase; D014367:Tryptophan Synthase