1887

Abstract

SUMMARY: The genetic properties of a new () host specificity of were investigated using bacteriophage L. Phage L is a better substrate for s-specific restriction than phage P22. Mutants deficient in s-restriction only were found at the same frequency as mutants deficient in both restriction and modification. Crosses between Hfr and F or between and showed that the s system has the same chromosomal location as the k system of The s system was introduced into and found to be effective on phage λ.

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/content/journal/micro/10.1099/00221287-69-3-345
1971-12-01
2022-01-20
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