title: Amber mutants of the trpR regulatory gene.
mesh_terms: D001426:Bacterial Proteins / Q000096:biosynthesis; D003593:Cytoplasm; D004926:Escherichia coli; D005809:Genes, Regulator; D009154:Mutation; D009876:Operon; D011995:Recombination, Genetic; D013489:Suppression, Genetic
chemical_list: D001426:Bacterial Proteins