Repair of defined single base-pair mismatches in Escherichia coli.


Heteroduplexes with single base-pair mismatches of known sequence were prepared by annealing separated strands of bacteriophage lambda DNA and used to transfect Escherichia coli. Each of the eight possible single base-pair mismatches was constructed. Genetic analysis of the progeny phages obtained from transfected bacteria indicates that the E. coli… (More)

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