title: [Isolation and assay of lactose operon repressor].
mesh_terms: D001426:Bacterial Proteins / Q000302:isolation & purification; D002499:Centrifugation, Density Gradient; D002845:Chromatography; D004926:Escherichia coli / Q000032:analysis; D005809:Genes, Regulator; D007700:Kinetics; D007785:Lactose; D009876:Operon; D012333:RNA, Messenger
chemical_list: D001426:Bacterial Proteins; D012333:RNA, Messenger; D007785:Lactose