title: Protection of specific sites in 16 S RNA from chemical modification by association of 30 S and 50 S ribosomes.
mesh_terms: D000447:Aldehydes; D001483:Base Sequence; D001665:Binding Sites; D009690:Nucleic Acid Conformation; D009841:Oligonucleotides; D012335:RNA, Ribosomal; D012270:Ribosomes
chemical_list: D000447:Aldehydes; D009841:Oligonucleotides; D012335:RNA, Ribosomal