Lac repressor.
D004794:Enzyme Repression; D004926:Escherichia coli / Q000378:metabolism; D005696:Galactosidases; D005809:Genes, Regulator; D005827:Genetics, Microbial; D007785:Lactose / Q000378:metabolism; D008967:Molecular Biology; D009154:Mutation
D005696:Galactosidases; D007785:Lactose