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. 1978 Sep;27(3):513–518. doi: 10.1128/jvi.27.3.513-518.1978

Genetic characterization of Mu-like bacteriophage D108.

R A Hull, G S Gill, R Curtiss 3rd
PMCID: PMC525838  PMID: 702638

Abstract

Infection of Escherichia coli by bacteriophage D108 was shown to result in the generation of apparently random chromosomal mutations. Approximately 1% of the cells lysogenized by D108, as with Mu, acquired new auxotrophic mutations. D108-induced mutations were nonreverting and were most probably the result of insertion of the D108 genome into regions of genetic function. D108 and Mu shared many similar properties but were heteroimmune and had different host ranges. Lytic infections of Mu lysogens with D108 and D108 lysogens with Mu resulted in 100-fold increases in release of phage with prophage markers over those due to spontaneous induction. Phenotypic mixing was common, with most phage carrying the prophage immunity being packaged in particles with the host range of the superinfecting phage. A fraction of the superinfecting phage genomes were, however, packaged in particles with the prophage-specified host range. Although 10% of the prophage progeny were D108-Mu genetic hybrids, superinfecting phage-induced release of the prophage with reciprocal phenotypic mixing occurred in recA hosts, in which the frequency of D108-Mu genetic hybrids was reduced 100-fold.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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