title: Detection of displacement ("D") loops with the properties of a replicating intermediate synthesized by a DNA/membrane complex derived from the low-copy-number plasmid RK2.
abstract: A significant fraction of the plasmid DNA extracted from an RK2 miniplasmid DNA/membrane complex after incubation in vitro with appropriate substrates and cofactors contains "D" or displacement loops in one of at least three loci in the genome. These include the origin of replication and two transposon regions that code for kanamycin and tetracycline resistance. The relationship of these loops to early replicating intermediates for plasmid and transposon replication is discussed.
mesh_terms: D004261:DNA Replication; D004251:DNA Transposable Elements; D004269:DNA, Bacterial / Q000235:genetics*; D004926:Escherichia coli / Q000235:genetics; D009690:Nucleic Acid Conformation; D010957:Plasmids; D012093:Replicon
chemical_list: D004251:DNA Transposable Elements; D004269:DNA, Bacterial