title: Movement of ribosomes over messenger RNA in polysomes of rel +  and rel -  Escherichia coli strains.
mesh_terms: D000604:Amino Acyl-tRNA Synthetases; D001426:Bacterial Proteins / Q000096:biosynthesis; D002247:Carbon Isotopes; D002499:Centrifugation, Density Gradient; D004926:Escherichia coli / Q000166:cytology* / Q000201:enzymology / Q000378:metabolism; D008274:Magnesium; D009154:Mutation; D011132:Polyribosomes; D012329:RNA, Bacterial; D012333:RNA, Messenger; D012270:Ribosomes; D013997:Time Factors; D014316:Tritium; D014633:Valine / Q000378:metabolism
chemical_list: D001426:Bacterial Proteins; D002247:Carbon Isotopes; D012329:RNA, Bacterial; D012333:RNA, Messenger; D014316:Tritium; D000604:Amino Acyl-tRNA Synthetases; D014633:Valine; D008274:Magnesium