title: 5-5A crystallographic structure of penicillin beta-lactamase and radius of gyration in solution.
mesh_terms: D004926:Escherichia coli / Q000201:enzymology; D005583:Fourier Analysis; D008958:Models, Molecular; D010405:Penicillinase; D011487:Protein Conformation; D014961:X-Ray Diffraction
chemical_list: D010405:Penicillinase