title: A novel salt-unstable "50-s" particle in Escherichia coli; a possible ribosomal precursor for the 50-S subunit.
mesh_terms: D000535:Aluminum; D002499:Centrifugation, Density Gradient; D003840:Deoxycholic Acid; D004355:Drug Stability; D004591:Electrophoresis, Polyacrylamide Gel; D004926:Escherichia coli / Q000166:cytology / Q000378:metabolism*; D007553:Isotope Labeling; D008274:Magnesium; D009154:Mutation; D012329:RNA, Bacterial / Q000378:metabolism; D012335:RNA, Ribosomal / Q000378:metabolism; D012270:Ribosomes / Q000166:cytology*; D012492:Salts; D013056:Spectrophotometry, Ultraviolet; D013347:Subcellular Fractions / Q000378:metabolism; D013997:Time Factors; D014316:Tritium; D014498:Uracil / Q000378:metabolism
chemical_list: D012329:RNA, Bacterial; D012335:RNA, Ribosomal; D012492:Salts; D003840:Deoxycholic Acid; D014316:Tritium; D014498:Uracil; D000535:Aluminum; D008274:Magnesium