title: Hybrid enzyme molecules reconstituted from mixtures of wild-type and mutant Escherichia coli  -galactosidase.
mesh_terms: D000906:Antibodies; D001665:Binding Sites; D002499:Centrifugation, Density Gradient; D004589:Electrophoresis, Disc; D004926:Escherichia coli / Q000201:enzymology*; D005696:Galactosidases; D006824:Hybridization, Genetic; D008956:Models, Chemical; D008967:Molecular Biology; D008970:Molecular Weight; D009154:Mutation; D013395:Sucrose; D013696:Temperature
chemical_list: D000906:Antibodies; D013395:Sucrose; D005696:Galactosidases