Improved Transformation Method forAcetobacterwith Plasmid DNA
نویسندگان
چکیده
منابع مشابه
Improved alkaline lysis method for rapid isolation of plasmid DNA.
Isolation of highly purified plasmid DNA from E. coli is an essential step in many techniques of current molecular biology. Traditional techniques for plasmid isolation are the alkaline lysis technique of Birnboim and Doly (2) and the boiling method of Holmes and Quigley (4), which are normally followed by a further purification by cesium chloride gradient centrifugation (9). Though the purity ...
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A plasmid transformation system was developed for Bacillus polymyxa ATCC 12321 and derivatives of this strain. The method utilizes a penicillin-treated-cell technique to facilitate uptake of the plasmid DNA. Low-frequency transformation (10(-6) per recipient cell) of plasmids pC194, pBD64, and pBC16 was accomplished with this method. Selection for the transformants was accomplished on both hype...
متن کاملTransformation of Azotobacter vinelandii with plasmid DNA.
Azotobacter vinelandii cells can be transformed at high frequencies with the broad-host-range plasmids pRK2501, RSF1010, and pGSS15, using a modification of the procedure developed by Page and von Tigerstrom (J. Bacteriol. 139:1058-1061, 1979) for chromosomal DNA-mediated transformation. The frequency of transformation per microgram of plasmid DNA per viable cell with pRK2501 and pGSS15 was abo...
متن کاملAn improved method for large-scale preparation of negatively and positively supercoiled plasmid DNA.
A rigorous understanding of the biological function of superhelical tension in cellular DNA requires the development of new tools and model systems for study. To this end, an ethidium bromide[#x02013]free method has been developed to prepare large quantities of either negatively or positively super-coiled plasmid DNA. The method is based upon the known effects of ionic strength on the direction...
متن کاملGenetic transformation of Rhodopseudomonas sphaeroides by plasmid DNA.
A broad-host-range cloning vector, pUI81, was constructed in vitro from plasmids RSF1010 and pSL25 (a pBR322 derivative) and used to assay for transformation in Rhodopseudomonas sphaeroides. Washing cells with 500 mM Tris was an effective means of inducing competence for DNA uptake. Transformation frequencies as high as 10(-5) (transformants per viable cell) have been achieved by incubating Tri...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1985
ISSN: 0002-1369
DOI: 10.1080/00021369.1985.10867039