Identification of wild-type or mutant alleles of bacterial genes cloned on a bacteriophage lambda vector: isolation of uvrC(am) and other mutants

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Abstract
We have identified lambda transducing bacteriophages carrying deoxyribonucleic acid repair or recombination genes of Escherichia coli K-12 by their ability to infect and express their bacterial genes in mutant cells in an agar overlay. This technique has been used to recognize transducing phages carrying uvrC+, ssb+, and other genes and to isolate phages carrying mutant alleles unable to complement ssb or uvrC cells. Several uvrC mutations were obtained which were suppressor sensitive. Images