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Infect Immun. Sep 1985; 49(3): 679–684.
PMCID: PMC261242

DNA relationships among some tox-bearing corynebacteriophages.

Abstract

The DNA genomes of a number of tox-bearing, temperate corynebacteriophages isolated from strains of Corynebacterium diphtheriae and Corynebacterium ulcerans were compared. With one exception, these phages displayed similarities in their restriction enzyme digest profiles and extensive homology with prototypic beta converting phage. The exception, phage delta, had a unique restriction profile and exhibited homology with beta over a limited portion of its genome. DNAs of phages from each host contained cohesive ends and integrated as prophage by a mechanism analogous to that employed by coliphage lambda. It is proposed that these tox-bearing phages belong to a common family, the beta family. The role of the beta family in the movement of the tox gene between strains of C. diphtheriae and C. ulcerans is discussed.

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Selected References

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