Abstract
Drake, John W. (University of Illinois, Urbana). Ultraviolet mutagenesis in bacteriophage T4. I. Irradiation of extracellular phage particles. J. Bacteriol. 91:1775–1780. 1966.—Ultraviolet (UV) irradiation of extracellular T4 phage particles induces about 2 × 10−4r mutations per lethal hit. The mutants largely escape detection unless the irradiated phages are plated with very soft overlay agar. Multiplicity reactivation is not a prerequisite for mutagenesis. A much higher frequency of base pair substitution-type mutants is induced than is found in the spontaneous background, but sign mutants are also induced. Nearly half of the mutants map into previously identified UV hot spots. The rII mutants induced extracellularly are very similar to those induced intracellularly. The mutants also appear to result from direct radiation effects upon the bacteriophage deoxyribonucleic acid.
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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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