title: F 1  sex factor of Escherichia coli. Size and purification in the form of a strand-specific relaxation complex of supercoiled deoxyribonucleic acid and protein.
mesh_terms: D002247:Carbon Isotopes; D002499:Centrifugation, Density Gradient; D002918:Chymotrypsin; D003090:Coliphages; D004269:DNA, Bacterial; D003902:Detergents; D004926:Escherichia coli; D005827:Genetics, Microbial; D006150:Guanine Nucleotides; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D008854:Microscopy, Electron; D008970:Molecular Weight; D009690:Nucleic Acid Conformation; D009691:Nucleic Acid Denaturation; D009698:Nucleoproteins / Q000302:isolation & purification*; D010759:Phosphorus Isotopes; D011119:Polynucleotides; D011402:Pronase; D012723:Sex; D013464:Sulfuric Acids; D014316:Tritium; D014500:Uracil Nucleotides
chemical_list: D002247:Carbon Isotopes; D004269:DNA, Bacterial; D003902:Detergents; D006150:Guanine Nucleotides; D009698:Nucleoproteins; D010759:Phosphorus Isotopes; D011119:Polynucleotides; D013464:Sulfuric Acids; D014500:Uracil Nucleotides; D014316:Tritium; D002918:Chymotrypsin; D011402:Pronase