title: Formation of catenated colicin factor E1 deoxyribonucleic acid molecules in a recombination-deficient strain of Escherichia coli.
abstract: Catenated deoxyribonucleic acid molecules of colicin factor E1 (Col E1) were found with nearly equal frequency in minicells derived from Escherichia coli strain P678-54 recA(+) (Col E1) and P678-54 recA(-) (Col E1). The result suggests that the recombination function controlled by the recA gene does not influence the formation of catenated Col E1.
mesh_terms: D002499:Centrifugation, Density Gradient; D003087:Colicins / Q000096:biosynthesis*; D003227:Conjugation, Genetic; D004261:DNA Replication; D004269:DNA, Bacterial / Q000032:analysis / Q000096:biosynthesis* / Q000302:isolation & purification; D004270:DNA, Circular / Q000032:analysis / Q000302:isolation & purification; D004926:Escherichia coli / Q000166:cytology / Q000378:metabolism*; D005796:Genes; D008854:Microscopy, Electron; D009690:Nucleic Acid Conformation; D011995:Recombination, Genetic; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D003087:Colicins; D004269:DNA, Bacterial; D004270:DNA, Circular; D014316:Tritium; D013936:Thymidine