Abstract:Genetic and segregation analysis of Escherichia coli strains containing a partial duplication of the tip operon reveal that the 2.5-min-long region trpD-purB is duplicated in tandem in the chromosome. The adjacent loci cysB and fabD are not duplicated. Although one copy of the duplicated region is longer than the maximum size of bacteriophage Plkc transducing fragments, the frequency at which the duplicated segment trpDCBA is transferred by transduction to tonBtip deletion strains is equal to that observed for… Show more
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