title: Localization of a portion of the ribosomal RNA genes in Escherichia coli.
abstract: About one-half of the genes coding for ribosomal RNA in Escherichia coli have been localized by the use of F-merogenotes. These cistrons have been positioned between 74 and 77 min on the E. coli map described by Taylor and Trotter. The episomal DNA carrying these genes was enriched by chromatography. The map position is discussed with reference to previous localization attempts.
mesh_terms: D002499:Centrifugation, Density Gradient; D002874:Chromosome Mapping; D002876:Chromosomes, Bacterial / Q000032:analysis; D004269:DNA, Bacterial / Q000032:analysis; D004926:Escherichia coli / Q000166:cytology / Q000378:metabolism*; D005809:Genes, Regulator; D005827:Genetics, Microbial; D009693:Nucleic Acid Hybridization; D010759:Phosphorus Isotopes; D011511:Proteus / Q000378:metabolism; D012329:RNA, Bacterial / Q000096:biosynthesis*; D012335:RNA, Ribosomal / Q000096:biosynthesis; D012270:Ribosomes / Q000378:metabolism*; D014316:Tritium
chemical_list: D004269:DNA, Bacterial; D010759:Phosphorus Isotopes; D012329:RNA, Bacterial; D012335:RNA, Ribosomal; D014316:Tritium