title: Biochemical characterization of lac repressor proteins produced by suppression of two amber mutations.
mesh_terms: D000595:Amino Acid Sequence; D003062:Codon; D005809:Genes, Regulator; D007785:Lactose / Q000096:biosynthesis*; D009154:Mutation; D011506:Proteins; D014364:Tryptophan; D014443:Tyrosine
chemical_list: D003062:Codon; D011506:Proteins; D014443:Tyrosine; D014364:Tryptophan; D007785:Lactose