title: Tertiary structure of Escherichia coli beta-D-galactosidase.
mesh_terms: D004926:Escherichia coli / Q000201:enzymology*; D005696:Galactosidases / Q000032:analysis*; D008961:Models, Structural; D008967:Molecular Biology; D008970:Molecular Weight; D010447:Peptide Hydrolases; D010455:Peptides / Q000032:analysis; D014461:Ultracentrifugation
chemical_list: D010455:Peptides; D005696:Galactosidases; D010447:Peptide Hydrolases