title: Selection of Escherichia coli mutants devoid of one or of both the activities carried by a multifunctional protein.
mesh_terms: D000429:Alcohol Oxidoreductases; D000596:Amino Acids / Q000096:biosynthesis; D004794:Enzyme Repression; D004926:Escherichia coli / Q000201:enzymology*; D005246:Feedback; D005827:Genetics, Microbial; D006824:Hybridization, Genetic; D009154:Mutation; D010770:Phosphotransferases; D013912:Threonine / Q000494:pharmacology
chemical_list: D000596:Amino Acids; D013912:Threonine; D000429:Alcohol Oxidoreductases; D010770:Phosphotransferases