title: Characterization of the regions from E. coli 16 S RNA covalently linked to ribosomal proteins S4 and S20 after ultraviolet irradiation.
mesh_terms: D001483:Base Sequence; D001665:Binding Sites; D011485:Protein Binding / Q000528:radiation effects; D012313:RNA / Q000528:radiation effects*; D012269:Ribosomal Proteins; D014466:Ultraviolet Rays
chemical_list: D012269:Ribosomal Proteins; D012313:RNA