title: Functional heterogeneity of the 30S ribosomal subunit of Escherichia coli. II. Effect of S21 on initiation.
mesh_terms: D001426:Bacterial Proteins / Q000032:analysis*; D002458:Cell Fractionation; D002501:Centrifugation, Zonal; D004926:Escherichia coli / Q000032:analysis*; D010442:Peptide Chain Initiation, Translational; D011485:Protein Binding; D012343:RNA, Transfer; D012270:Ribosomes / Q000032:analysis*; D013268:Stimulation, Chemical
chemical_list: D001426:Bacterial Proteins; D012343:RNA, Transfer