title: Synthesis of two lac repressor polypeptides in a mutant of Escherichia coli that has a new promotor for the lac operon mapping within the i gene.
mesh_terms: D004591:Electrophoresis, Polyacrylamide Gel; D004926:Escherichia coli / Q000378:metabolism*; D005809:Genes, Regulator; D005779:Immunodiffusion; D007785:Lactose / Q000096:biosynthesis*; D008970:Molecular Weight; D009154:Mutation; D009876:Operon; D010452:Peptide Biosynthesis; D010446:Peptide Fragments / Q000032:analysis; D014176:Protein Biosynthesis
chemical_list: D010446:Peptide Fragments; D007785:Lactose