title: Altered specificity of synthesis of guanosine tetraphosphate (ppGpp) and pentaphosphate (ppGpp) by salt-washed ribosomes.
mesh_terms: D002458:Cell Fractionation; D002855:Chromatography, Thin Layer; D004926:Escherichia coli / Q000166:cytology / Q000378:metabolism; D006150:Guanine Nucleotides / Q000096:biosynthesis*; D006160:Guanosine Triphosphate / Q000378:metabolism; D007700:Kinetics; D009154:Mutation; D010761:Phosphorus Radioisotopes; D012329:RNA, Bacterial / Q000096:biosynthesis; D012335:RNA, Ribosomal / Q000096:biosynthesis; D012270:Ribosomes / Q000378:metabolism*; D013056:Spectrophotometry, Ultraviolet; D013997:Time Factors
chemical_list: D006150:Guanine Nucleotides; D010761:Phosphorus Radioisotopes; D012329:RNA, Bacterial; D012335:RNA, Ribosomal; D006160:Guanosine Triphosphate