title: Second naturally occurring beta-galactosidase in E. coli.
mesh_terms: D002874:Chromosome Mapping; D003433:Crosses, Genetic; D004790:Enzyme Induction; D004926:Escherichia coli / Q000201:enzymology* / Q000378:metabolism; D005696:Galactosidases / Q000096:biosynthesis / Q000378:metabolism*; D005796:Genes; D007785:Lactose / Q000378:metabolism / Q000494:pharmacology; D009154:Mutation; D011995:Recombination, Genetic
chemical_list: D005696:Galactosidases; D007785:Lactose