Mutator and antimutator phenotypes of suppressed amber mutants in genes 32, 41, 44, 45, and 62 in bacteriophage T4
نویسندگان
چکیده
منابع مشابه
Antimutator mutants in bacteriophage T4 and Escherichia coli.
Antimutators are mutant strains that have reduced mutation rates compared to the corresponding wild-type strain. Their existence, along with mutator mutants that have higher mutation rates compared to the wild-type strain, are powerful evidence that mutation rates are genetically controlled. Compared to mutator mutants, antimutators have a very distinguishing property. Because they prevent norm...
متن کاملSite specificity and variability in the mutator and antimutator effects of phage T4 gene 43 mutants.
Spontaneous, 2-aminopurine- and 5-bromouracil-induced mutations at six rII nonsense codons were studied in phage T4 strains possessing wild-type and mutant gene 43 alleles. The mutation pathways studied included interconversions and reversions of nonsense codons. The tsCB87 allele, which specifies an antimutator DNA polymerase, reduced base-analogue-induced mutation frequencies along all pathwa...
متن کاملSuppression of amber and ochre rII mutants of bacteriophage T4 by streptomycin.
Orias, E. (University of California, Santa Barbara), and T. K. Gartner. Suppression of amber and ochre rII mutants of bacteriophage T4 by streptomycin. J. Bacteriol. 91:2210-2215. 1966.-Streptomycin-induced suppression of amber and ochre rII mutants of phage T4 was studied in a streptomycin-sensitive strain of Escherichia coli and four nearly isogenic streptomycin-resistant derivatives of this ...
متن کاملIn vitro complementation as an assay for new proteins required for bacteriophage T4 DNA replication: purification of the complex specified by T4 genes 44 and 62.
We have developed an in vitro complementation assay for six T4 bacteriophage gene products believed to be components of the T4 DNA replication apparatus. This assay is based upon the fact that DNA synthesis in an infected cell lysate that lacks a given gene product is specifically stimulated by addition of the missing product. By the use of such an assay, two proteins that appear to be the prod...
متن کاملVol.62 (Sensor 2014), pp.41-44
The vocal training is useful for beginners to learn how to correctly sing, and for professional singers to tune their voice and expand their frequency range. In the paper, we propose a study on vocal training by analyzing voice pitch on android platform. Vocal training requires a vocal coach who is always besides you to correct your mistakes. However, beginner who wants to learn singing for fun...
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ژورنال
عنوان ژورنال: Journal of Virology
سال: 1978
ISSN: 0022-538X,1098-5514
DOI: 10.1128/jvi.25.1.73-77.1978