title: Direction of transcription of a regulatory gene in E. coli.
mesh_terms: D002874:Chromosome Mapping; D004794:Enzyme Repression; D004926:Escherichia coli / Q000378:metabolism*; D005696:Galactosidases / Q000096:biosynthesis; D005796:Genes; D005809:Genes, Regulator; D005815:Genetic Code; D005816:Genetic Complementation Test; D005827:Genetics, Microbial; D007785:Lactose / Q000378:metabolism*; D008954:Models, Biological; D008967:Molecular Biology; D009154:Mutation; D012333:RNA, Messenger / Q000096:biosynthesis; D014364:Tryptophan / Q000378:metabolism
chemical_list: D012333:RNA, Messenger; D014364:Tryptophan; D005696:Galactosidases; D007785:Lactose