title: Sedimentation equilibrium of paucidisperse systems. Subunit structure of complemented beta-galactosidase.
mesh_terms: D004926:Escherichia coli / Q000201:enzymology; D005696:Galactosidases / Q000032:analysis*; D006146:Guanidines; D008970:Molecular Weight; D055095:Optics and Photonics; D010455:Peptides / Q000032:analysis; D014461:Ultracentrifugation
chemical_list: D006146:Guanidines; D010455:Peptides; D005696:Galactosidases