title: On the subunit structure of wild-type versus complemented beta-galactosidase of Escherichia coli.
mesh_terms: D002499:Centrifugation, Density Gradient; D004171:Diploidy; D004926:Escherichia coli / Q000201:enzymology*; D005696:Galactosidases; D005796:Genes; D005827:Genetics, Microbial; D006358:Hot Temperature; D009154:Mutation; D010455:Peptides; D011995:Recombination, Genetic; D014461:Ultracentrifugation; D014508:Urea
chemical_list: D010455:Peptides; D014508:Urea; D005696:Galactosidases