Abstract:We examined several aspects of bacteriophage Mu development in Escherichia coli strains that carry mutations in the polA structural gene for DNA polymerase I (Poll). We found that polA mutants were markedly less efficient than PolI wildtype (PolI+) strains in their capacity to form stable Mu lysogens and to support normal lytic growth of phage Mu. The frequency of lysogenization was determined for polA mutants and their isogenic PolI+ derivatives, with the result that mutants were lysogenized 3 to 8 times less… Show more
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