title: Small-angle X-ray scattering study of ribosomal proteins S3, S4 S7 and s20.
mesh_terms: D001426:Bacterial Proteins; D004926:Escherichia coli; D008970:Molecular Weight; D011487:Protein Conformation; D012269:Ribosomal Proteins; D014961:X-Ray Diffraction
chemical_list: D001426:Bacterial Proteins; D012269:Ribosomal Proteins