[Determination of the localization of the kcpA gene on the chromosome of E. coli O124. I. Use of the type F' plasmids of varying length].
The loss of virulence was observed in some of the transconjugates of E. coli O124 in the process of the transfer of the plasmids differing in length: F' 200 PS, F'x 573 and F'x 363, carrying the genes of the chromosome area lac--pur E. The genetic determinants contributing to the ability of E. coli O124 to produce keratoconjunctivitis seem to be localized near the lactose marker, and not near E as in Sh. flexneri. In E. coli O124 these genetic determinants are probably localized on both sides of the lactose operon.
D000818:Animals; D002874:Chromosome Mapping; D002876:Chromosomes, Bacterial / Q000648:ultrastructure*; D003227:Conjugation, Genetic; D004926:Escherichia coli / Q000235:genetics* / Q000472:pathogenicity; D005144:F Factor; D005796:Genes; D005838:Genotype; D006168:Guinea Pigs; D007637:Keratoconjunctivitis / Q000382:microbiology; D010957:Plasmids; D014774:Virulence
Opredelenie lokalizatsii kcpA gena na khromosome E. coli O124. Soobshchenie I. Ispol'zovanie plazmid F' tipa raznoĭ protiazhennosti.