منابع مشابه
Isolation of "relaxed" mutants of Escherichia coli.
All previously described mutants showing relaxed control of ribonucleic acid (RNA) synthesis (RCrel strains) have been derived from a common ancestor, Escherichia coli strain W6 (L. Alfoildi, G. S. Stent, and R. C. Clowes, J. Mol. Biol. 5:348, 1962), first described by E. Borek, A. Ryan, and I. Rockenbach (J. Bacteriol. 69:460, 1955). We wish to describe the isolation of independent relaxed mut...
متن کاملIsolation of germination mutants of Dictyostelium discoideum.
A simple method to separate spores from amoebae of Dictyostelium discoideum has been devized and used to isolate spore germination mutants. A subclass of these mutants is temperature sensitive for germination and growth.
متن کاملIsolation of morphological mutants of Agrobacterium tumefaciens.
Morphological mutants were isolated from a wild strain of Agrobacterium tumefaciens at a high frequency by treatment with a nitrosoguanidine. Seventeen of the 20 mutants isolated were temperature-sensitive. At 27 C, the mutant cells were rod-shaped and at 37 C, spherical or branched, whereas the wild-type cells were rod-shaped at both temperatures.
متن کاملIsolation and Characterization of Saccharomyces cerevisiae Mutants
Aculeacin A is a lipopeptide that inhibits ,B-glucan synthesis in yeasts. A number of Saccharomyces cerevisiae mutants resistant to this antibiotic were isolated, and four loci (ACRI, ACR2, ACR3, and ACR4) whose products are involved in the sensitivity to aculeacin A of yeast ceils were defined. Mutants containing mutations in the four loci were also resistant to echinocandin B, another member ...
متن کاملIsolation of mutants blocked in calicheamicin biosynthesis.
Blocked mutants of Micromonospora echinospora defective in the production of the potent antitumor agent calicheamicin are described. Analysis of intermediates produced by blocked mutants indicates a branched biosynthetic pathway. Mutants that produced some, but not all, calicheamicin forms are also described.
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ژورنال
عنوان ژورنال: Fungal Genetics Reports
سال: 1969
ISSN: 1941-4765
DOI: 10.4148/1941-4765.2041