title: Replicating DNA: structure of colicin factor E1.
abstract: Replicating circular molecules of colicin factor E1 have been isolated from minicells produced by a colicinogenic derivative of Escherichia coli P678-54. The replicating structures observed in electron micrographs are circular molecules with two branched points. Several structures found among the replicating molecules are interpretable as replicating rolling circles.
mesh_terms: D003087:Colicins; D004261:DNA Replication; D004269:DNA, Bacterial / Q000032:analysis / Q000302:isolation & purification*; D004926:Escherichia coli / Q000032:analysis*; D008854:Microscopy, Electron
chemical_list: D003087:Colicins; D004269:DNA, Bacterial